I have 2 brand new 5000mah NIMH batteries, I've used them about 5 times now.
When I charge them (I use an old Prophet and a new Sigma EQ mini charger) I set the Amps to about 4 (prophet) and 4.5 (Sigma). The Sigma has a digital readout and I can't get the charging amps to go above 2.8, sometimes it'll go to 3 when charging. I asked my local hobby shop why this is happening and he said because when the charger is plugged in the wall it doesn't have enough juice to make it past the 2.8 volts but it would work perfectly if I used DC from a battery. I hooked it up to a 12v car battery and it still says the same 2.8 and takes about 1.5 hours to charge. Any ideas?