Two B&D 18v NiCad batteries. They both fit my old 18v B&D EPC18 drill, but only the 2-pin/prong A18E battery works. The 3-pin ML:HPB18 is completely dead in the drill, but, after testing, seems to be fully charged (16.6V = OK for a not-new battery?).
So, is this because the batteries are importantly different in some way, or because one battery is faulty? What kind of 'faulty' would fully-charged-but-not-working be? Or are they significantly different - is the three-prong one incompatible in some way, even though it's the correct voltage and fits the drill - snaps into place fine?
If the battery is not faulty, but just incompatible, could anyone help me understand the difference between these two batteries - at least in terms of what tool the useless-to-me 3-prong one is intended for, so that i can offer it to someone who could maybe use it...?
Thanks!
So, is this because the batteries are importantly different in some way, or because one battery is faulty? What kind of 'faulty' would fully-charged-but-not-working be? Or are they significantly different - is the three-prong one incompatible in some way, even though it's the correct voltage and fits the drill - snaps into place fine?
If the battery is not faulty, but just incompatible, could anyone help me understand the difference between these two batteries - at least in terms of what tool the useless-to-me 3-prong one is intended for, so that i can offer it to someone who could maybe use it...?
Thanks!
