Customer Reviews for VEVOR Dual Battery Isolator, 12V 300 Amp, Manual and Automatic VSR Voltage Sensitive Relay with LCD Screen, Smart Battery Isolator for Lithium & Lead-Acid Batteries, for Car Truck RV UTV ATV Boat

would 100% buy for any 2 battery project great unit

Good order

Ok

Great unit this is my second one...

Starting with the minor drawbacks: the hardwired ground wire is annoyingly short, so you'll have to splice it if your setup needs extra length. The relay also gets fairly warm while active. Losing a few watts to heat isn't a massive issue, but because the unit is fully sealed and potted, heat gets trapped inside and raises a slight concern about component longevity. As long as the internal parts are rated for high temperatures, though, it should hold up fine. Otherwise, it's an excellent choice for dual lead-acid banks. Thanks to the adjustable voltage cutoff, it also works surprisingly well as a budget alternative to a DC-to-DC charger for pairing a lead-acid starter battery with a LiFePO4 house battery—provided your generator or alternator is fully regulated and current-limited to handle the lithium demand. Because lead-acid batteries have a large gap between resting and charging voltages, the potential adjusts quickly to match the lithium and balance out any inrush current. During testing with 16mm² wiring and 100A fuses, peak draw topped out at a very manageable 30A for me despite the batteries being very out of balance.

Ideal para ajustar voltajes de carga entre baterías de distinto tipo

Have it set up for a dual battery audio setup, one wet cell and one agm. Simple to use and hasn't caused any issues so far. Being able to adjust the cutoff voltage is extremely handy as my batteries have different resting voltages

Works as described

does what it says

Einfacher Einbau, alles wie beschrieben, schnelle Lieferung,