Smart Dual Battery Isolator 12V 140A Digital Voltage Sensitive Relay VSR Split Charge
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$23.12at WalmartChecked Nov 10
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This is a voltage-sensitive relay that links a second battery to the vehicle's charging system only when the main battery is charged, then disconnects it when voltage drops. It handles up to 140A and has a digital voltmeter showing real-time voltage, plus automatic and manual modes. It suits vans, caravans, boats, UTVs and camping setups running a house or accessory battery. Compared with plain manual isolators, the automatic voltage sensing and display add convenience; the trade-off is that cheap VSRs are known for short relay life and vague switching thresholds.
In stockSold by APEX ANGLE LLCReturns: Sold by a Walmart Marketplace seller; returns go to the seller under the seller's returns policy.
This is a digital voltage sensitive relay (VSR) for split charging two batteries. It is rated for 12V and 140A. It works in automatic or manual mode, and the main battery is always connected.
A built-in voltmeter shows the real-time voltage. When two batteries are connected, it shows the voltage of the battery with the higher reading. Low-voltage protection automatically disconnects the circuit to keep the main battery from over-discharging.
It is used in vans, trucks, caravans, UTVs/ATVs, boats, marine setups, buses and for camping.
