How do the microprocessor chargers differ from rickle chargers?
Trickle chargers are generally considered to be the older, fixed amp output (though low output) non-intelligent chargers. They do not take any information from the battery, and simply put out a fixed rate. This can be enough to overcharge over time, and had to be monitored to be safe for the battery. The microprocessor controlled chargers actually take information from the battery, and regulate the output down to milliamps, to maintain a set floating voltage, which compensates for internal battery drain, to maintain a fully charged state without overcharging. Lead acid batteries can be held in this state for long periods (indefinitely), though the flooded type still needs to have the electrolyte checked occasionally, due to evaporation.
