Very Inexpensive Battery Maintenance Charger
1.0 ampere output. 13.8 volts regulated charge limit. This unit is good for 100 amp hours worth of batteries. IMO the voltage is a tad high for a high antimony RV battery with temps 60F or higher but ...
Forum Discussion
Those little chargers IMHO are garbage. The ones with separate TRANSFORMER and regulator circuit. Too many regulator failures. But with the regulator cut out of the circuit stick a 3 amp axial diode inline with the positive charge lead and the transformer gets tamed. Recheck voltage. If need suggests it add a second diode this time a shottky to further reduce voltage by .4 volt. Ideal is 13.3 to 13.6.
