Getting a schematic of a laptop battery is harder than getting a
nuclear fusion details...they keep it away from electroFans 2 keep
sucking our money......Anyhow, Ur problem may(and may not) be solved by
creating an external (smaller duty) cell group, connect it in parallel
with the old one b4 disconnecting the cells 2 test them independently.
This is bcoz some of electronic board inside the battery may shut off
premanent and lose code if cut off power.

Good luck