maXpeedingrods 300AMP Dual Battery Isolator Kit 12V 24V with Intelligent Controller
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$128.79at WalmartChecked Nov 10
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This is a dual-battery isolator kit built around a 300A manager and a separate in-cab controller. The manager links a main and an auxiliary battery so both charge while driving, then disconnects the auxiliary when the main battery drops too low to start the engine. The controller shows both battery voltages and lets you force a connection for emergency starting or high-current loads without opening the hood. It suits owners of trucks, RVs, boats and off-road rigs running a second battery for accessories, and it competes with simpler voltage-sensing relays by adding a display and manual override.
In stockSold by maXpeedingrodsReturns: Sold by a Walmart Marketplace seller; returns go to the seller under the seller's returns policy.
This dual battery isolator kit connects a vehicle's main battery and an auxiliary battery. It is rated at 300 amps and works on 12V and 24V systems. It suits ATVs, boats, SUVs, UTVs, minivans, trucks, RVs and yachts, as well as outdoor camping setups.
The system automatically connects or disconnects the two batteries and lets them charge or discharge between each other. When the main battery is low, it disconnects the auxiliary battery so the main battery keeps enough power to start the vehicle. In an emergency, a forced connection function joins the two batteries to meet engine starting or high-current needs.
The separate intelligent controller shows the main and auxiliary battery voltages and the connection status. It lets you manage the system from inside the vehicle, without getting out and opening the hood.
