For those with battery removal issues. Take a small piece of cellotape (about 6cm will do), fold one edge of the tape over onto itself, leaving yourself about 2cm of sticky at the end. Now stick the tape to the underside of your battery (at the opposite end to the terminals), and curve the end over the battery to make a small handle to pull the battery.

Now if all of that made sense then you can insert the battery into your tablet and the tape will stick up around the battery, when you want to remove the battery just give the tape a tug and the whole thing will pop out .... no more small screwdrivers and no more smacking the tablet against your hand to pop out the battery.