i got a NiMH rechargeable battery pack from local market. well knows a cordless phone battery pack.the product Model is HGB-15AAx3 an it says "Ni-MH battery 3.6v 1500mah" & it's a green colored battery pack consisting 3 outputs wires.black ,red an white wire.
My question is why there are 3 wires out puts of the battery pack?
i measure the voltages of the battery pack and i noticed that only black and red wire gives the reading. The white wire give no any output.