> Put a piece of paper over one of the batteries middle contacts.
Bad, very bad idea if you don't know what you are doing - depending on where the "smarts" in the BMS are, you may damage your battery or make your BMS think the pack is broken or prevent your BMS from recognizing a charge state mismatch (and in the worst case, a cell going undervoltage or reverse polarity) as you have a good chance that you cut off one of the cell balancer contacts. This trick only works with removable phone batteries.
I'm a corporate firefighter assistant. If there's one thing people should not be messing around with, it's Li-Ion batteries. These things are dangerous enough even without people messing around with their control and management systems.
Bad, very bad idea if you don't know what you are doing - depending on where the "smarts" in the BMS are, you may damage your battery or make your BMS think the pack is broken or prevent your BMS from recognizing a charge state mismatch (and in the worst case, a cell going undervoltage or reverse polarity) as you have a good chance that you cut off one of the cell balancer contacts. This trick only works with removable phone batteries.