Does it work with lithium batteries?

Yes. The kit is built for both lithium and lead-acid batteries and adjusts charging voltage to the battery type.

What does the delay function do?

It holds the relay off for a short time after the engine starts or stops, which avoids switching on voltage spikes and helps extend battery life.

Can I charge the auxiliary battery from the main one?

Yes. Manual mode lets you reverse the charging direction, so the aux battery can be topped up from the starter side.

What is included in the kit?

The 140 Amp VSR relay with a voltmeter and LCD screen. Check the box contents for wiring and mounting parts before installing.

Is 140 Amps enough for my setup?

It covers charging and typical accessory loads on a 12V system. High-draw items like large winches or big inverters should run on their own circuit.

Can I see both battery voltages at once?

Yes. The dual display shows the main and auxiliary battery voltages in real time.

Dual Battery Isolator Kit with VSR Relay and Voltmeter, 12V 140 Amp

Best price now

$98.76at SaveClickShopChecked Nov 10

Prices are checked against each store and labelled with when.

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Dual Battery Isolator Kit with VSR Relay and Voltmeter, 12V 140 Amp

Best price now

$98.76at SaveClickShopChecked Nov 10

Prices are checked against each store and labelled with when.

Visit SaveClickShop

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Price facts

Last seen at $98.76 at SaveClickShop on Nov 10.

Our take on the Dual Battery Isolator Kit with VSR Relay and Voltmeter, 12V 140 Amp

A 12V dual battery isolator kit built around a 140 Amp voltage sensitive relay, with a voltmeter and LCD screen showing both battery voltages. It switches between manual and automatic modes, so it can isolate the starter battery from an auxiliary one or reverse-charge the aux battery on demand. A delay function holds the relay off briefly to protect against voltage spikes and extend battery life. It suits RV, boat, truck, UTV and ATV owners running a second battery for accessories, and it works with both lithium and lead-acid types.

Best forRV and camper owners running an auxiliary batteryBoat owners with a house and starter batteryTruck and overlanding setups with accessoriesUTV and ATV owners adding a second battery

Pros

140 Amp relay handles most 12V accessory loads
Works with lithium and lead-acid batteries
Manual mode allows reverse charging of the aux battery
Dual voltage display shows both batteries at once
Delay function protects against voltage spikes

Cons

Wiring and installation take some electrical know-how
Voltmeter accuracy is not calibrated-grade
No mounting hardware details given
Relay is not rated for high-output winches or large inverters

Dual Battery Isolator Kit with VSR Relay and Voltmeter, 12V 140 Amp prices at every store

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$98.76Checked Nov 10
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About the Dual Battery Isolator Kit with VSR Relay and Voltmeter, 12V 140 Amp

This dual battery isolator kit is made for 12V systems. It includes a 140 Amp VSR (voltage sensitive relay) with a voltmeter and an LCD screen. It works with both lithium and lead-acid batteries.

The relay adjusts the charging voltage to suit the battery type. It has automatic and manual modes, and manual mode allows reverse charging. A delay function is built in to help extend battery life. The display shows the voltage of both batteries in real time, and the unit protects against overvoltage and undervoltage.

It can be used in a UTV, ATV, RV, truck or boat.

Brand: VEVOR
Voltage: 12V
Amp rating: 140 Amp
Compatibility: Lithium and lead-acid batteries
Modes: Automatic and manual
Display: LCD screen showing dual voltage
Protection: Overvoltage and undervoltage
Use with: UTV, ATV, RV, truck, boat

Questions and answers

Does it work with lithium batteries?: Yes. The kit is built for both lithium and lead-acid batteries and adjusts charging voltage to the battery type.
What does the delay function do?: It holds the relay off for a short time after the engine starts or stops, which avoids switching on voltage spikes and helps extend battery life.
Can I charge the auxiliary battery from the main one?: Yes. Manual mode lets you reverse the charging direction, so the aux battery can be topped up from the starter side.
What is included in the kit?: The 140 Amp VSR relay with a voltmeter and LCD screen. Check the box contents for wiring and mounting parts before installing.
Is 140 Amps enough for my setup?: It covers charging and typical accessory loads on a 12V system. High-draw items like large winches or big inverters should run on their own circuit.
Can I see both battery voltages at once?: Yes. The dual display shows the main and auxiliary battery voltages in real time.
Where is the Dual Battery Isolator Kit with VSR Relay and Voltmeter, 12V 140 Amp cheapest?: At SaveClickShop, for $98.76, as of our latest check.

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