How Many Amps Does A Trickle Charger Use. Whenever you charge your batteries this resistance changes some of the energy during the charge into heat. I would use less current for indefinite trickle charging just to keep the battery from self discharging.
A 1 amp charger can take 60 hours to charge a completely dead battery. For much larger batteries leaving them connected indefinitely will most likely be okay. Another problem with older RV converters is they charge at a fixed voltage in the range of 135 volts.
The trickle charger produces a constant small amp charge usually 2 amps or less that keeps the battery fully charged while at rest.
You can use a trickle charger around 1 amp to charge any lead acid battery regardless if it has removable caps or is sealed. I would use less current for indefinite trickle charging just to keep the battery from self discharging. This is due to the fact that its typically better for battery life to provide some or all of the charge at slower rate via a lower amperage but it isnt always convenient to wait around for a 2 amp trickle charger to do its job. Wed Oct 27 2010 1020 pm.
