@revk@toot.me.uk Your call but... With apologies. 200mA might be the manufacturers chosen safe figure? If it is an absolute maximum then... Also rechargeable batteries do other stuff according to their datasheet. TLP as supplied by Neil is rubbish. I always get my TLP from Neil's website. As a result I can't charge a battery above 80% and the last 5% takes ages :( On top of that how accurate is your 196mA measuring/limiting circuit? 10% and you lose the warranty.