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Argo FET Battery Isolator - 100AMP - 2 Batteries
to diode battery isolators, FET based isolators allow simultaneous charging
of two or more batteries from one alternator without connecting the batteries together. Compared to
diode battery isolators, FET based isolators have minimal voltage loss.
Voltage drop is less than 0.02V at low current and averages 0.1V
at higher currents.
These are a good product to use with an alternator that is feeding a LiFePO4 bank on one output and a lead acid battery on the other output. This way if the LiFePO4 BMS disconnects the alternator will still be connected to a battery and not cause a voltage transient.