I got a couple of no-name batteries from Flea-Bay, about 1200mah if I recall and they both worked perfectly with good life compared to the kit battery.
I would guess that you were just unfortunate to get a "Duff" battery, Mine are excellent and under a tenner each !!.
Kieran
I would guess that you were just unfortunate to get a "Duff" battery, Mine are excellent and under a tenner each !!.
Kieran