my 12 v drillmaster had 2 empty slots for additional cells in the battery
case- I now have a 14.4/12v drill- although it still about as good as my
ancient 9.6 makita...
m Ransley wrote in message
...
A 14.4 might have been better then as alternators put out usualy 13.5 v
and lead acid batteries are not charged till 13.35-13.9 v