then charging for about 24 hours everytime wouldn't do any harm to the batteries? what is exactly a full discharge battery? talking about a 4.8 V (4 cell) pack,  if they are at 4.6 or 4.5 V then, can I assume I'll need only  16 hours (or so) to get them fully charged? remember, I'm talking about a 2000 mAh 4.8V pack and a 80 mA output charger.</p>