Gents, be very, but very very careful while replacing the batteries.
Have in consideration that:
- If you torque the battery and/or make a hole, be ready for a serious fire and very toxic smoke. It it happens, don't try to extinguish with water because water reacts with Lithium and continues fire.
- New battery cannot be bigger in size than the replaced one, as they grow in size while charging (remember Samsung Note 8 issue)