It is important to mention, however, that float charge is only supposed to kick in when the battery is fully charged. It does not charge it any further but merely compensates for self-discharge and can be maintained indefinitely long. Also, automatic chargers are usually not universal – they are not only programmed for a specific battery chemistry, but also for a specific range of battery capacity. I haven’t seen an automatic charger that would properly handle, for example, everything from 5 to 200 Ah.
LeSving wrote:
The basics of charging a lead-acid is this:
