I mentioned the 700mah phone batteries, well today I zapped them on the battery charger on 6v, went up to 6amps about 20 times,only briefly touching the terminal, then gave a couple more at 12v,prior to this they would not power the display on the handset but after the display lit.I have not got a tester yet so had to use a charger that then showed good, so have left them on charge for 10hrs or so and see how long they last when being used.
I think I will have to clamp some metal to the contacts on the drill battery as the contacts are really thin and if I zap with the 70amp car battery I might blow through them.It will be interesting to see what voltage is present in the different batteries so must get one soon.There seems to be so many I'm not sure what I should get so any ideas would be welcome.