When more data is available it will be posted. Please check back occasionally. The easiest and most reliable battery is the Lead-Acid variety. This battery is basically the same as the one in your car and requires the same treatment. There is no need for discharging prior to recharge.
Most chargers continue to charge after charge lights extinguish.
Occasionally batteries may need to spend up to 24 hours on a charger to regain a maximum charge. There is no need to fear overcharging as chargers as usually contain safety circuitry to prevent excess heat buildup. Also most batteries are internally thermally fused to prevent meltdown and acid leakage. NiCad or Nickel Cadmium and Nickel Metal Hydride batteries require more attention than Lead-Acid. These are the same batteries found in cordless phones.