We build cores for you to rebuild your own power tool battery packs.  With this purchase you will need to open your case and solder your existing connector/sensors to our pre-assembled battery pack.  The core battery pack that you will receive from us will have all the cells and tabs welded together.  It will be balanced and fully charged.

Due to our lawsuit happy society we are unable to provide any instruction on how to assemble/disassemble your pack.  If you cannot rebuild it yourself, send us your battery pack for the rebuild.

Call us to purchase the core that you require. Tel: 510-393-7700

We will need the (Make & Model) number of your battery.  We will e-mail you for the information.

DO NOT SPECIFY YOUR TOOL/CHARGER MODEL NUMBERS!