Dan, this is a common situation with nicad batteries and other types have
been develop that don't have this attribute.
There are a variety of ideas to correct the problem but I've not found any
that are satisfactory.
The only thing that works for me is to replace the battery after I grumble
that the battery alone cost almost as much as the tool!
HomeOwnersHub.com is a website for homeowners and building and maintenance pros. It is not affiliated with any of the manufacturers or service providers discussed here.
All logos and trade names are the property of their respective owners.