How long does it take to re-charge the batteries?
It depends on what kind of battery you are using. If you have a Nickel Metal Hydride battery (NI-MH) you can usually charge them up fairly quickly. Approximately 1/2 an hour, to 45 minutes or so. A Lithium Polymer battery (LiPo) is another animal altogether! Using the correct kind of charger, you can usually charge these up in anywhere from an hour, at the earliest, to a few hours at the most.
A. This depends on a number of factors. The cell type, the charger type, depth of discharge, battery age, temperature at time of charge, etc, etc. Modern day charging is not like the old days where a constant voltage was applied and the battery “just charged”. Add to that the battery capacity and charger capacity and charge rates could range from 15 minutes to 6 hours.
