[Chris_Haspin]

HI,
after a couple of years and telling my Grandson not to kee portable dvd player on charge all the time even when watching dvd's, battery finally won't hold a charge very long...
so I thought I'd change battery...silly money if I could get one..so I thought why not get inside battery case and just renew the battery itself....
it's a 2800Mah 3.7v approx 130mm x 70mm x 5mm
there are 3 wires coming from the battery 1x red 1x white 1x black,
(there unit seems to be made up of two batteries side by side )
these wires connect (soldered) to a small circuit board
red to B+(T7) black to B- (T9) the white is to (T8)BM

does anyone know 100% what the m stands for (Memory)
with multimeter reading -blk to +red reading is near 7v
with -blk to m white reading near 5.9v ?