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Compact black ABS box with LCD screen and wiring kit

VEVOR

VEVOR VSR002 Dual Battery Isolator Kit 12V 140A with LCD Screen

SKU CH-KB9Q-48WZD

A 12V dual-battery isolator with voltage-sensitive relay, LCD screen, 140A peak and 100A continuous current, plus 6m cables for RV, boat or off-road use

  • TypeOther Appliances
  • Width8.5
  • Automatic voltage sensing protects both batteries at 12.3V cut-in and 12.6V cut-out
  • Handles 140A peak current for five minutes and 100A continuous charging
  • LCD screen shows real-time voltage status for instant monitoring
  • Includes 19.7 ft positive cable and full mounting hardware for quick install
  • Compact ABS housing measures 68 x 68 x 56 mm and weighs 1.5 kg

12 V 140 A Dual Battery Isolator

The VEVOR VSR002 is a voltage sensitive relay kit designed for 12 V storage batteries. It provides both manual and automatic switching modes and includes an LCD screen for real-time voltage monitoring. The kit comes with a 140 A peak relay, 6 m positive and 0.64 m negative cables, mounting screws, lug terminals, heat shrink tubing and cable ties.

Suited For Single 12 V Auxiliary Batteries

This isolator suits owners of ATVs, UTVs, RVs, campers, off-road vehicles, caravans, trucks, boats and yachts who need to charge a second 12 V battery from the alternator. Builders requiring a different system voltage, adjustable voltage thresholds or higher continuous current should look at a different controller.

Cut In 12.3 V Cut Out 12.6 V

The relay engages charging at 12.3 V and disconnects at 12.6 V, delivering up to 140 A for short bursts and 100 A continuously. These fixed thresholds decide whether the unit matches the battery chemistry and alternator behaviour of the intended installation.

Highlights

  • Automatic voltage sensing protects both batteries at 12.3V cut-in and 12.6V cut-out
  • Handles 140A peak current for five minutes and 100A continuous charging
  • LCD screen shows real-time voltage status for instant monitoring
  • Includes 19.7 ft positive cable and full mounting hardware for quick install
  • Compact ABS housing measures 68 x 68 x 56 mm and weighs 1.5 kg

Specifications

TypeOther Appliances
Width8.5

Questions about this item

How much space is needed to mount the 68 × 68 × 56 mm VSR unit?

The voltage sensitive relay measures 68 mm long, 68 mm wide and 56 mm high, so allow at least that footprint plus clearance for the 6 m positive and 0.64 m negative cables.

Which wiring step is most often missed when installing the VSR002 kit?

Fit the supplied 25-6 toroidal terminal block and the 25-8 and 16-8 lug ends onto the 6 m positive and 0.64 m negative cables, then slide the red heat-shrink tubing over each crimp before tightening the M4 screws.

What ongoing checks does the 140 A dual battery isolator require?

Inspect the cable lugs, heat-shrink seals and M4 mounting screws periodically for corrosion or loosening, and verify the LCD still shows cut-in at 12.3 V and cut-out at 12.6 V.

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