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 ...
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they are slooooooooooooooooooooooooooooow battery charging devices. Hook it to a battery at 12.2 volts and come back 12 hours later the battery will probably be at 12.3 volts. Maybe 12.25
