12 best battery switches for boats

Product description

Perko's 8501 Series battery selector switches are among the most popular battery switches ever produced. Their use of the traditional Perko bolt circle makes for easy installation, whether new or as a replacement. These switches can be mounted in numerous locations. And as ignition protected switches, they can be installed in the engine rooms of gasoline powered boats. In addition to doing everything a battery disconnect switch does, battery selector switches permit battery selection (of two or more batteries) for specific purposes including starting engines, running accessories or even recharging. They allow for the use of one or more batteries in systems with one or more engines and facilitate putting batteries in parallel for emergency starting when one or both batteries are substantially discharged. Perko battery switches are designed for surface mounting. Standard duty switches have a bright red polycarbonate housing for safety with a large easy-to-turn black knob. The housing of the heavy duty switches are red fiber-reinforced polycarbonate. Selector switches are designed with a make before break feature. This allows switching between the 1, the ALL and the 2 positions while the engine is running. Models with an Alternator Field Disconnect feature offer protection for Non-Unitized Alternators should the switch accidentally be turned to the OFF position with the engine running. Versions of the 8501 Series switches offer additional features such as alternator disconnect and key lock security. The 90° rotation feature allows users to feel the switches' position in no light situations and the classic shape of the knob makes it easy to turn. High conductivity studs are long enough to handle more than 1 cable and strong enough for torque needed for secure connections. Optional spacer ring (PN 0462DP0RED) allows for the use of larger cables.

• Diameter: 5.25"
• Polycarbonate body with brass terminals
• For use with 6 to 50 volt marine electrical systems
• Capacity - 250 AMPS Continuous, 360 AMPS 5 Mins. Intermittent
• Terminal Stud Size: 5/16"

User questions & answers

Question:	Does do the same function as a insolator? And can i use both
Answer:	It does not go back stays in the two on positions
Question:	Wire hook up direction
Answer:	No they are not spring loaded.
Question:	What size are the terminals on the back
Answer:	I believe they would handle up to 120 volts. Very useful in wiring for a polarity reversing system. I used in lessor amperage for 12 volt fans to blow out or in as desired.
Question:	Can you start the engine with the switch in #1 and switch to All to charge both after starting
Answer:	No. It stays in the position you last placed it

Product description

Whether starting, charging or operating batteries in parallel, this battery selector switch allows for the ideal management of electrical power on board. Featuring a bright red polycarbonate housing and easy-to-turn black knob, this UL listed, ignition protected and CE approved battery selector switch provides the simplified and simultaneous switching of two or more batteries. Seachoice is committed to delivering quality marine accessories and OEM replacement parts to satisfy fishing, boating and watersports enthusiasts worldwide. Seachoice is run for and by boaters offering a wide-ranging product line while remaining affordable.

• Permits selection between batteries for starting, charging or operation in parallel
• For use with two or more batteries and systems under 50V
• UL listed, ignition protected and CE approved
• Capacity: 250A continuous, 360A intermittent
• Size: 5-1/4 inch x 2-5/8 inch

User questions & answers

Question:	Say you are trollin with deep cell,FF et and then need to start and run upriver..Do you need to switch it to your start battery every time
Answer:	right
Question:	When using "both" is that gonna push 24 volts
Answer:	Yes, it is spring loaded to return to off. It is a momentary switch, you want a two (or three) position switch that is not momentary
Question:	How is the knob on the selector switched attached and can it be unattached
Answer:	can wrok 12v
Question:	What size are the studs, what size cable lugs will it accept
Answer:	Yes it returns to center. I used for trim switch front of bass boat. Up/down

Product features

The Seachoice Commitment

Seachoice is committed to delivering quality marine accessories and OEM replacement parts to satisfy fishing, boating and watersports enthusiasts worldwide. Seachoice is run for and by boaters offering a wide-ranging product line while remaining affordable.

Quality

Seachoice marine accessories and OEM replacement parts are manufactured to rigorous standards to ensure proper function and first-rate appearance.

Selection

From anchors to anodes, Seachoice offers a wide range of products designed to make your experience on the water safer and more enjoyable.

Value

Seachoice is operated by boating, fishing, and water sports enthusiasts like you who appreciate quality and selection at an affordable price.

Product description

Ampper battery switch, battery power master switch disconnect isolator for car, vehicle, Rv and boat.



Specifications:

1, ABS plastic housing, durable made for safety use.

2, Rear cover insulates terminals against any short of circuits.

3, On/Off 2 positions.

4, Copper terminal studs with nuts and washers.

5, 4 mounting screw holes.

6, 275 A continuous at DC 12V, 455 A Intermittent at DC 12V, 1250 A momentary at DC 12V.

7, Used for DC 12 - 48V systems to isolate and secure the electrical system.

8, Can stand alone or be locked together with other switch.

9, Eliminate any power draw from the battery when vehicle or boat is not in use.

10, Disconnects the battery safely.

11, Universal used for Car, Vehicle, RV and Boat.

12, Used as electrical equipment's switch.

13, Size: 2.68" x 2.68" x 3.07".



Complete kits includes:

1 x battery switch.

4 sets of mounting bolts.



100% Satisfaction.

No reason for return or change.



Order it now!

• Heavy Duty: ABS plastic housing, durable made for safety use, rear cover insulates terminals against any short of circuits, equiped with 4 sets of bolts.
• Operation: On/Off 2 positions, 275 A continuous at DC 12V, 455 A intermittent at DC 12V, 1250 A momentary at DC 12V.
• Compatible: used for DC 12 - 48 V systems to isolate and secure the electrical system, can stand alone or be locked together with other switch.
• Purpose: eliminate any power draw from the battery when vehicle or boat is not in use, disconnects the battery safely.
• Copper terminal stud size: 3/8" (10 mm) x 2, very easy to install, universal used for car, vehicle, Rv and boat, also electrical equipment's switch.

User questions & answers

Question:	Just installed my switch. When I turn it on, there’s about a 10 second delay before the power turns on in my rv. Is that normal
Answer:	Don’t think so
Question:	a continuous at dc 12v" a lifepo4 battery has a peak voltage of 58 volts. what is the continuous amperage rating at that voltage
Answer:	I believe the directions will come with switch. I had no problem with hook up
Question:	what is the size of the thread on the mounting bolts, English or metric and what size thread
Answer:	Like Rick said 5/16From the PERKO INSTALL PAGE:Cat No. 8501 Series Basic SwitchCat No. 8502 Series with Key LockCat No. 8503 Series with Alternator Field DisconnectCat No. 8504 Series with Lock and Field DisconnectBATTERY SWITCHESINSTALLATION AND OPERATING INSTRUCTIONSFor use with alternators and generators rated 6-50 V.D.C. switch rating: 250 amperes continuous, 360 intermittent.Locate switch to keep battery cables short as possible.All wiring to the switch shall be preformed by a QUALIFIED MARINE ELECTRICIAN, and in accordance with the “Fire ProtectionStandard For Motor Craft”, N.F.P.A.* No. 302, The Standards of the American Boat and Yacht Council, Inc.*, and the U.S.C.G.*Safety Standards for Boat Electrical Systems (33 CFR 183).CAUTION: (1) Make sure connections at terminals No.1 and No. 2 are of the same polarity.(2) Always STOP engines before switching to “OFF” position. Make-Before-Break feature allows switching between1-all-2 positions with running engines.Erratic operation, particularly after very long periods of idleness, can be cleared by rapidly switching back and forth briskly severaltimes with out any load connected.NOTE: (1) Locate switch to keep battery cables short as possible.(2) If switch is to be mounted in an area subject to corrosion, it is recommended that a liquid electrical coating beapplied to the terminal connections.(3) Terminal stud size is 5/16 inch.(4) Mounting screw size #10 pan head or round head. Do not over-tighten screws to prevent deforming the switch.
Question:	Is there a bottom or back
Answer:	Yes, absolutely. When you are stopped somewhere, put it on 1 or 2 and let it use that battery. This way, you always have the other batter at 100% to start the engine. When you are running, put it on All to charge the batteries.

Product features

Ampper 12 - 48 V Battery Power Switch

Used for DC 12 - 48 V systems to isolate and secure the electrical system, can stand alone or be locked together with other switch. Eliminate any power draw from the battery when vehicle or boat is not in use, disconnects the battery safely.

Heavy Duty & High Quality

ABS plastic housing, durable made for safety use, rear cover insulates terminals against any short circuit, equipped with 4 sets of bolts.

Durable Copper Terminal

10 mm (3.94 in) copper terminal, On/Off 2 position, 275 A continuous at DC 12V, 455 A Intermittent at DC 12V, 1250 A momentary at DC 12V.

Widely Use

DC: DC 12 - 48 V, could be used for Car, Vehicle, RV and Boat, also electrical equipment's switch.

Ampper High Quality Battery Switch

Isolate and secure the electrical system, could stand alone or be locked together with other switch.

Eliminate any power draw from the battery when vehicle or boat is not in use, disconnects the battery safely.

Rear cover insulates terminals against any short circuit.

The switch does not have polarity, we recommend to install in-line of negative (-) cable of battery.

Ampper High Quality Battery Switch

Isolate and secure the electrical system, could stand alone or be locked together with other switch.

Eliminate any power draw from the battery when vehicle or boat is not in use, disconnects the battery safely.

Rear cover insulates terminals against any short circuit.

The switch does not have polarity, we recommend to install in-line of negative (-) cable of battery.

Ampper High Quality Battery Switch

Isolate and secure the electrical system, could stand alone or be locked together with other switch.

Eliminate any power draw from the battery when vehicle or boat is not in use, disconnects the battery safely.

Rear cover insulates terminals against any short circuit.

The switch does not have polarity, we recommend to install in-line of negative (-) cable of battery.

Ampper High Quality Battery Switch

Isolate and secure the electrical system, could stand alone or be locked together with other switch.

Eliminate any power draw from the battery when vehicle or boat is not in use, disconnects the battery safely.

Rear cover insulates terminals against any short circuit.

The switch does not have polarity, we recommend to install in-line of negative (-) cable of battery.

• Single Circuit ON-OFF. Switches a single battery to a single load group
• IP66 waterproof, ISO 8846 and meets ABYC requirements. Ignition protected—safe for installation aboard gasoline powered boats
• Make before break contact design allows switching between battery banks without power interruption
• Continuous Rating: 300A, Maximum Voltage: 48V DC
• Robust redesign done in July 2017
• Premium warranty and support

User questions & answers

Question:	I have a 2000 watt inverter in my car. the required cables are 0 guage, rated at 350 AMPS. Is this the right switch for those cables
Answer:	No you can run on any position
Question:	what is the load capacity of this switch
Answer:	No, this would connect the batteries in parallel. When two identical batteries are connected in parallel, you double the output capacity while keeping the output voltage the same as either battery.
Question:	How to wire it
Answer:	The knob is not removable from what I can tell. For flush mounting it is best to cut a hole large enough for the face panel to show and the rest is hidden behind the panel.
Question:	I have a solar system, with 3 batteries in parallel. How do I wire it to turn the system off ? Thanks Jerry
Answer:	Studs and cable lugs will be 3/8”

Product features

Blue Sea Systems 300 Amp m-Series Battery Switches

• Ignition protected—safe for installation aboard gasoline powered boats
• Case design allows surface, front panel, or rear panel mounting
• Isolating cover with snap-on sections protects rear contacts

• 🔋【Material】: Heavy duty battery shut off switch made of ABS plastic housing, and the 4 sets of bolts is tinned copper studs(2 x 3/8" (10mm) & nuts for ignition protected to distinguish the different gears easily which you switch to even at night.
• 🔋【Easy Operation】: RV Battery switch with On/Off position in clear color labels. Switch ON=Power (green) to closed circuit, Switch OFF = No power (red) to the cut-off circuit.
• 🔋【Compatible 】: Used for 12-48V, 275 A continuous at DC 12V, 455 A intermittent at DC 12V, 1250 A momentary at DC 12V, battery selector switch can stand alone or be locked together with other switch for minimizing battery loss and preventing electric leakage effectively.
• 🔋【Safe & Protective】: Battery isolator switch comes with CE Certification, and 4 removable side plates, the rear cover insulates terminals against any short of circuit.
• 🔋【Wide Application】: Kohree battery switch serves as a power cut off when vehicle or boat is not in use on RV, ATV, car, marine boat, camper, camper, travel trailer, truck, UTV, etc.

User questions & answers

Question:	Can the switch bolt connectors be changed to 5/16"? My Cable and battery connections are
Answer:	Pls turn on the switch with a little power and check it again, maybe the switch did not get to the right position after turn on (and slip to the right postion after a few seconds).
Question:	Is this waterproof
Answer:	I took a look at your question. I information is incomplete. I looked at the specs for a 20amphour Lifepo4 batt with a nominal voltage rating of 12.8v.
Question:	Can you remove the red knob itself
Answer:	I’m not really sure on the thread size but it’s real close to 10/32 American. It’s actually a metric thread though but I don’t have anything to positively I.d. It. I threaded a metric die nut on it but I cannot read the size on my die nut. A .8mm it looks like but not sure. Sorry I couldn’t help more and took so long to respond.
Question:	Is 48v nominal? Really more like 56v or more while charging 4 - 12v lead acid batteries in series
Answer:	Yes the switch is fully enclosed except for the side you enter with the wire

Product features

Specifications:

• Material: ABS Plastic, Brass
• Safety Certificate: CE
• Operating Current: 275A
• Momentary Current: 1250A
• Stud Diameter: 10mm / 0.4inch
• Size: 2.8* 2.8* 3.9 inch (L* W* H)
• Weight: 0.6 lb

Package Includes:

• 1 x Battery Switch
• 4 x Removable Side Plate
• 1 x Bottom Plate
• 4 x Screw
• 4 x Nut

Heavy Duty Cut Off Switch

• -CE listed, premium ABS plastic housing, 4 removable side plates, durable and dependable for safety use.
• -The rear cover insulates terminals against any short of circuits, meeting safety requirements and preventing electrical accident.
• -Cleverly designed with distinguishing different sounds of different gear easily , especially great for dark night use.

Easy-to-Use ON/OFF Switch

• -Clear ON/OFF color labels, easy to use.
• -ON (green) represents the closed circuit and OFF (red) represents the cut-off circuit.
• -Used for DC 12-48V systems to isolate and secure the electrical system.

Safe Locking System

• -The Locking System enables it to be used as an independent unit, or locked together with other switches.
• -Effectively protects the power supply for minimizing battery loss and more importantly preventing electric leakage

Product description

GREAT PRODUCT

• Switches a single battery to a single load group Ignition protected - safe for installation aboard gasoline powered boats
• IP66 waterproof, ISO 8846 and meets ABYC requirements
• Accepts two 4/0 AWG (95mm²) battery cables.
• Terminal Stud Size: 1/2"
• Continuous Rating: 600A, Max Voltage: 32VDC

User questions & answers

Question:	All I need is the ON/OFF version. I noticed in the picture it has 3 post on the back, How would that be wired ? I only have 1 Hot in and out
Answer:	Should be ok. I use one with 0 gauge cable to my 2500 watt inverter. Just watch your cable length, shorter the better. I'm also using a 24vdc battery system, if you are using a 12vdc battery system you might be under-sizing the switch and cable. Don't forget to fuse it.
Question:	Is it waterproof
Answer:	the M-series wil carry a 300 amp load, and will not spark when switched between positions. If that's not enough, the e-Series will hold a 350 amp continuous load.
Question:	What does ignition protected mean
Answer:	Side 1 to battery "A" + and side 2 to battery "B" +, common to vehicle or camper or what ever your installing it in. Negative of both batteries go to the vehicle ground as normal. You can then use the switch and select either battery or both in parallel or disconnect both of them from the vehicle. Works wonderful on my camper.
Question:	Power flows in both directions through this switch?? Discharge/ charge batteries
Answer:	The way I would do this would be to run the largest wire I can to the switch over to where you keep your 3 batteries. and then have this large wire end in a busbar or distribution block. Ideally 1-in, 3-out. Or if you plan on adding any more batteries, use a distribution block that has the same number of outputs as total batteries you plan to use. Then run the biggest wires that fit the distribution block to the batteries. The shorter the length of wire, the better. But the best method is to use the largest wires for the longest runs and split with distribution blocks at the batteries

Product description

The Mini add-a-battery plus simplifies switching with a dual circuit plus battery switch and allows you to charge at or away from the dock with the battery link charger. The 10A, 2 bank, charger includes an integrated 65A acr for automatic charging of 2 battery banks off a single engine alternator. The battery link charger is ip-67 waterproof and includes battery temperature compensation, start isolation, and comes with an external indicator remote. Battery temperature compensation allows you to charge a battery based on its temperature to ensure it's always receiving safe and optimal charging voltages. Start isolation ensures that sensitive electronics are not subjected to the voltage sags from engine cranking. The external indicator remote allows a customer to understand the charge status of their system at or away from the dock. By integrating switching and AC/DC charging the Mini add-a-battery plus makes boating simpler and safer. Reducing the possibility of someone being stranded with a dead battery. For use in 12V applications only.

• Simplifies switching. Isolates engine and house circuits. Combines batteries for emergency starting
• Tin-plated copper studs for maximum conductivity and corrosion resistance
• 12/24 Volt DC 120 Amp Automatic Charging Relay (PN 7610) automatically combines batteries during charging. Isolates batteries during engine cranking and when not charging
• Includes E-series dual circuit plus battery switch (PN 5511E)
• Shares the charge between two batteries more efficiently than a battery isolator

User questions & answers

Question:	Will the acr (automatic charge relay) engage (charge both batteries) while using a battery maintainer on the engine battery while in dry dock
Answer:	Dear Dot W.We are sorry to tell you that the they can’t be changed to 5/16", Stud diameter of this switch is 10mm / 0.4inch. Hope this information can be helpful to your purchase.
Question:	If i use system on my truck, do the two batteries have to be identical in amps and size
Answer:	Yes, it is. Comes with a weatherproof cover to against the rain, storm, snows, and dust.
Question:	hello i have a question if i am using dual battery off a 80hp outboard now will this charge both battery's?? here the tricky part one battery
Answer:	Dear Harri,No, it can’t be removed. The red knob is for On/Off control. Hope this information can be helpful to your purchase. If you have any question, please feel free to contact us through sending us Amazon messages.
Question:	Let me get this straight. In the "off" position I can connect one dock side charger to the starter battery to charge both batteries
Answer:	Dear Addison,No. Please note that the working voltage of this switch is 12V-48V DC. Hope this will be helpful to your purchase.

Product features

Blue Sea Systems Add-A-Battery Kit

The ADD-A-BATTERY is as simple to operate as an ON-OFF switch, yet effectively manages the switching and charging of two batteries from a single charge source

The Add-A-Battery includes a Dual Circuit Plus Battery Switch and an Automatic Charging Relay. These components simplify switching and automate charging, so that all you have to do is turn the battery switch ON when you arrive and OFF when you leave.

Dual Circuit Plus Battery Switch

• Simplifies switching
• Isolates engine and house circuits
• Combines batteries for emergency starting
• Tin-plated copper studs for maximum conductivity and corrosion resistance

ACR Automatic Charging Relay

• Automatically combines batteries during charging
• Isolates batteries during engine cranking and when not charging
• Shares the charge between two batteries more efficiently than a battery isolator
• Allows efficient dual battery charging without needing regulator adjustment or rewiring

• 【EASY OPERATION】Rating: 275A DC Continuous (1hr), 455A DC Intermittent (5 min), 1250A DC Cranking (10 sec); Stud Size: 2x3/8" (10mm); Switch on = Power; Switch off = No power
• 【DURABLE MATERIAL】This battery master switch is made of durable plastic housing, tinned copper studs and nuts. Come with 4 stainless steel mounting screws and caps to help fix the switch tightly. Removable rear cover insulates the rear terminals against any short circuits. 4 Removable side plates provided access for battery cables
• 【COMPATIBLE】This battery disconnect switch is used for DC 12 - 48V systems to isolate and secure the electrical system, can stand alone or be locked together with other switch, simple and economical way to separate batteries
• 【NO MORE BATTERY DRAIN】This battery isolator switch provides a reliable way to shut down electrical power during maintenance and protect batteries from excessive drain when vehicle or boat is not in use
• 【WIDE APPLICATION】This battery kill switch is widely used for Car, Marine, Boat, RV, Camper, Travel Trailer, Truck, ATV, UTV, Battery banks and other electrical equipment's switch, such as flashing light, chassis light, fog light, dome light

User questions & answers

Question:	can I run the negative from the trailer to the switch and run another negative cable to the battery? Will that work
Answer:	The stand alone post is an input and the two side by side outputs. You can use one or both of the outputs as the on /off cuts power to both.
Question:	Is it waterproof
Answer:	it's ok to get wet but not submerge
Question:	Is there a warranty for this product and if so what is it
Answer:	It means the switch can be used in an engine room or other space where explosive fumes might be present. The switch is designed to 'protect' against causing 'ignition' of explosive vapors should the switch spark internally.
Question:	The battery terminal from my popup camper is too small to fit on the post in the cutoff switch. Is there a suggestion how to adapt
Answer:	Yes it's just a switch so power flow can go either direction

Product features

Specification:

2 Position: On Off

Voltage: 12V-48V

Rating:

• 275A DC Continuous (1hr)
• 455A DC Intermittent (5 min)
• 1250A DC Cranking (10 sec)

Terminal material: Tinned copper

Terminal Diameter: 3/8”(10mm)

Package Include:

• 1 x Battery Switch
• 4 x Removable Side Plate
• 1 x Rear Cover
• 4 x Screw
• 4 x Nut

Super Safety & Well Built:

• This battery master switch is made of durable plastic housing, tinned copper studs and nuts.
• It features superior performance and good conductivity. Rust and corrosion resistant, durable made for safety use.
• Come with 4 stainless steel mounting screws and caps to help fix the switch tightly. Removable rear cover insulates the rear terminals against any short circuits. 4 Removable side plates provided access for battery cables.

Easy to Use:

This battery disconnect switch is used for DC 12 - 48V systems to isolate and secure the electrical system, can stand alone or be locked together with other switch, simple and economical way to separate batteries.

No More Battery Drain:

This battery kill switch can disconnect the battery safely. It provides a reliable way to shut down electrical power during maintenance and protect batteries from excessive drain when vehicle or boat is not in use.

Widely Applications:

Widely used for Car, Marine, Boat, RV, Camper, Travel Trailer, Truck, ATV, UTV, Battery banks and other 0-48V Devices.

Customer Feedback & Actual in Use Application

It’s enclosed so it doesn’t touch anything else. I had to make my own battery ends. The terminals are quite large for hooking up to an ATV/ UTV. You’ll need a 24” cable then cut in half and install small cable ends. Works out great! It’s easy to read”on and off” I would highly recommend this battery switch. I wlll be buying a few more for my boats. Thanks for a great product.

Customer Feedback & Actual in Use Application

Very well built. I purchased it to use as a battery isolator for my service truck. Works great.

Customer Feedback & Actual in Use Application

This switch is what I need for isolation -- for off grid when charging the battery -- also easy to read between off & on position

Customer Feedback & Actual in Use Application

Worked perfectly! Kills power to the camper so it doesn’t drain my battery when parked. Hooked my solar charger directly to my battery so it is sure to stay charged.

• Package Dimensions :
• Date First Available :
• Manufacturer :
• ASIN :

• Selector 4 Position. Switches isolated battery banks to all loads or combines battery banks to all loads
• Operation: 1-2-Both-Off, Rating: 200 Amps Continuous,1000 Amps momentary at 12V DC
• Can be used with 8V - 50V DC systems to isolate and secure the electrical system
• Four removable side plates for access of up to 1/0 cables plus a rear cover insulating the rear terminals against any short circuits. This ensures the switch meets ABYC requirements. Ignition protected
• Terminal Stud Size: 3x5/16” (8mm), Instructions included: one Battery Switch (4 x bolts/hardware)

User questions & answers

Question:	Is the switch water/weather-proof
Answer:	Yes. Assuming it's wired correctly and the charger is connected directly to the start battery. Then the ARC will bypass the switch and charge the house battery as well.
Question:	Can I use it for my ebike for parallel connection
Answer:	No the system doesn't have to have identical batteries. They need the same voltage 12/24.
Question:	Tools needed for installation
Answer:	The Blue Sea is designed like a battery tender, it charges the main (engine starter) first. When the main is charged it will start charging the auxiliary battery. If you run your auxiliary battery a lot (accessories) then you will need to run the engine for quite a while to recharge or use a separate battery charger (110 volts). My suggestion is to install a small solar charger to help keep the auxiliary battery charged while using your boat and it will also charge up and keep charged your battery when not in use. This products does what it's supposed to do.
Question:	I'm confused. I want to buy battery post clamp set shown but all reviews are for a switch -can someone clarify
Answer:	That is correct.

• LotFancy battery switches are the most widely compatible. Operation: 1-2-both-off; Rating: 200A DC Continuous (1hr) , 455A DC Intermittent (5 min), 1250A DC Cranking (10 sec); Voltage: 12V-48V DC; Stud Size: 2 x 3/8" (10mm)
• The patented contour locking system, allowing it to be a stand alone unit, or locked together with other switches to isolate and secure the electrical system, Offering a simple economic way of separating two batteries
• This battery cut shut off kill switch has four removable side plates provide access of up to 1/0 cables. The rear cover insulating the rear terminals against any short circuits, ensuring that the switch meets ABYC requirements
• Tin-plated copper studs and nuts; Ignition-protected
• Widely used for Car, Marine, Boat, RV, Camper, Travel Trailer, Truck, ATV, UTV, Battery banks and other 0 up to 60V Devices; 1 Year Warranty--a replacement or refund is guaranteed

User questions & answers

Question:	what is the wiring diagram for a rv
Answer:	That's what I did. Took my negative cable from the battery, wired it up to the switch, then from the other side of the switch I connected the negative wire of the coach. Now, when I turn the switch off there is no current flowing to the coach.
Question:	Is there such thing as a 1-2-off isolator switch? that is, i never want "both" to ever be an option that can be selected
Answer:	Tho it is well made, it is not waterproof. It must be installed in a dry location.
Question:	Im running 24v service truck, with a front mounted quick connect jumper cable setup. Can I use this as a safe power off until needed
Answer:	1 Year Warranty--a replacement or refund is guaranteed
Question:	I ordered and received one, 5/16” posts and 48v rated. tried again, same thing... is 3/8 posts and 60v a misprint? Or are you sending the wrong item
Answer:	go to auto parts store or like Lowe's or H.D. - buy packet of larger wire ends for the size wire you have cut old end off crimp new end on put piece of heat shrink over end of wire and terminal connection or electrical tape.. since this goes between batteries and your camper you'll probably need a second wire to go between the battery and switch and then the wire you changed the end on would go on other side of the switch. so when you replace the end of your wire mount your switch in such a place that you can use the wire you have cut it so you make the jumper between battery and switch and the end you wanted to replace that way you only have to buy 2 ends

Product features

Specification:

4 Position: 1-2-Both-Off

Rating:

200A DC Continuous (1hr)

455A DC Intermittent (5 min)

1250A DC Cranking (10 sec)

Voltage: 12V-48V DC

Stud Size: 3 x 5/16" (8mm)

Package Include:

• 1 x Battery Switch
• 4 x Removable Side Plate
• 1 x Rear Cover
• 4 x Screw
• 4 x Nut

Come with 4 stainless steel mounting screws and caps to help fix the switch tightly. Removable rear cover insulates the rear terminals against any short circuits. 4 Removable side plates provided access for battery cables.

No More Battery Drain:

• This battery master switch can disconnect the battery safely.
• It provides a reliable way to shut down electrical power during maintenance and protect batteries from excessive drain when vehicle or boat is not in use.

Tips for Buying and Using a Battery Disconnect Switch:

1. Check the amperage rating before buying to know if the switch is suitable for the battery of your vehicle, boat, or RV. Different modes of transportation have different alternators that output varying power levels.

2. Always remember to turn off your vehicle before disconnecting the battery. This will prolong the lifespan of the battery, the electrical components, and the disconnect switch.

3. Avoid random power cuts or you risk damaging the locking navigation system and other anti-theft features.

4. When replacing the battery, disconnect the switch—starting with the negative terminal.

5. If you are not sure about installation, consult a professional to avoid system failure.

Easy to Use:

• This battery disconnect switch is used for DC 12 - 48V systems to isolate and secure the electrical system, can stand alone or be locked together with other switch, simple and economical way to separate batteries.
• This battery master switch allows for two batteries to operate independently, or for both to be in the ON or OFF position at the same time.

Super Safety & Well Built:

• This battery master switch is made of durable plastic housing, tinned copper studs and nuts.
• It features superior performance and good conductivity. Rust and corrosion resistant, durable made for safety use.

Wide Application:

Widely used for Car, Marine, Boat, RV, Camper, Travel Trailer, Truck, ATV, UTV, Battery banks and other 12-48V Devices.

Connected Battery A

Connected Battery B

Connected Battery A & B

• Designed for panel mounts. Range gives a very compact, versatile solution.
• Available with house knob (OEM # 701B-HB) or with chassis knob (OEM # 701B-CH)
• Tin-plated copper studs and nuts

User questions & answers

Question:	What is the height of the switch? top of switch to base
Answer:	It is not made to be submerged in water, it is water resistant and would be good for external disconnect for a camper or boat battery.
Question:	Why did this item not include mounting screws
Answer:	I don’t see any reason why not I used it for battery 1& 2 for individual selection or parallel for heavy winching application on UTV.
Question:	How many amps will this switch handle at 12 volts
Answer:	Basics--Drill, screwdriver, wrench. Plus whatever length you need of automotive battery cable.
Question:	Is it weatherproof, can it be mounted in the open
Answer:	I believe Amazon error. I never purchased the battery post kit, I got the battery switch. I believe the product is mixed up with the reviews.