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
My snotty design parameters call for a RV battery maintenance device to remain in float voltage up to an including the full potential of the device. Thus once float has been gained, 30-40-50 amperes load will still maintain float voltage.
Then when top charging is appropriate (scheduled), the batteries start out at float voltage and work their way upward to top charge limit of 15.0 volts at a charge amperage rated 5% of total amp hour capacity.
Similarly, AGM batteries can see a less frequent conditioning charge, using different parameters.
But the FLOAT event is for the benefit of the batteries not for the load. There is not a reason in the world to force bulk charge voltage limit *cycling* on a battery just because an RV's converter float voltage amperage potential has been exceeded. Some converters have absurdly low float threshold amperage limitations.
So yes, a properly set voltage float charging device with a 30 ampere capacity would be good for your batteries - but it in itself is only part of the recipe for ideal battery management.
Then when top charging is appropriate (scheduled), the batteries start out at float voltage and work their way upward to top charge limit of 15.0 volts at a charge amperage rated 5% of total amp hour capacity.
Similarly, AGM batteries can see a less frequent conditioning charge, using different parameters.
But the FLOAT event is for the benefit of the batteries not for the load. There is not a reason in the world to force bulk charge voltage limit *cycling* on a battery just because an RV's converter float voltage amperage potential has been exceeded. Some converters have absurdly low float threshold amperage limitations.
So yes, a properly set voltage float charging device with a 30 ampere capacity would be good for your batteries - but it in itself is only part of the recipe for ideal battery management.
