20v is 18v in the uk
a fully charged battery with a 1hr charge will be over volt by around 20% at 21.5v
so when you see people selling batteries and they are less than 10% over volt they have either been trickle charged or near the end off there life
a fully charged battery with a 1hr charge will be over volt by around 20% at 21.5v
so when you see people selling batteries and they are less than 10% over volt they have either been trickle charged or near the end off there life