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Black & Decker 12V battery pack fails to charge?

I have a rechargeable Firestorm 12V battery pack (model A9275) for a cordless drill. When I try to recharge it, the red "Battery Charging" light flashes on, then is immediately replaced by the green "Battery Full" light. No charging takes place. However I know that the battery is discharged as the drill does not operate when this battery is attached, but will work with a different battery. Any ideas ?

John B
September 2016

Black & Decker Power Tools, Drills Black 12v Battery

Replacement for Black & Decker A9275 Cordless Drill Battery

Type: Ni-MH
Volt: 12V
Capacity: 3000mAh
Color: Black
Weight: 670g
Dimension: 91.50x80.70x102.20mm

Buy this battey on

http://www.drillbattery.co.uk/batterysale.php/black+&+decker_A9275_power+tool+battery.html

www.drillbattery.co.uk
April 2020

You're probably right, it is quite an old battery - the symptoms just seemed a bit strange. Thanks for the advice.

John B
September 2016

Battery packs for hand-tools do not last forever - consider that your battery has failed.

Some brave and enterprising people dismantle defective batteries and fit replacement cells - perhaps youTube has videos about how to do it.

Perhaps it's time for a new battery?

Good Luck...
September 2016