Drill battery compatability

[cblanton42]

Hello,
    I just want to confirm this, I can use a lower voltage battery on a higher voltage drill ( a T-12 battery on a T-18 drill) but I can not use a higher voltage battery on a lower voltage drill (a T-18 battery on a T-12 drill).
Thanks in advance!
CB

 

[Kev]

Exactly right.

 

[cblanton42]

Thanks!