How to Make a cordless drill battery start charging again

Cordless drills are powered by rechargeable batteries. Over time these batteries lose their ability to charge fully and maintain a charge. If your battery won't charge at all this is a simple way to get it to charge again.

Dewalt DE9096 Cordless Drill Battery
1500mAh only Price: £29.11

• Step 1

  Bring your cordless drill battery into the garage (if it's not there already).

• Step 2

  Get a car battery charger or a fully charged car battery. You can use the battery that's in your car (you don't have to take it out).

• Step 3

  If you are going to use the car battery charger be sure the two wires are not touching and plug it in. Touch the positive (red) to the positive (+) on the drill battery and touch the negative (black) to the negative (-) on the drill battery. Hold the charger on your battery for 5-10 seconds. This will give it enough of a boost to start charging again in your drill battery charger. If you don't have a car battery charger you can repeat the above steps using jumper cables from your car battery.

Tips & Warnings

• Hold the charge to the cordless drill battery for several seconds and take it over to it's charger to see if it worked.
• Do not mix and match batteries and chargers. The wrong combination will create a fire hazard and can cause damage to the battery and charger. Never allow a battery charger to become wet.
• Never use a charger rated for more volts that your drill battery's capacity (example: don't put 12 volts to a 9.6v battery). You are better off using a lower volts charger or battery as not to damage the drill battery or worse.
• Wear safety glasses.
• Don't hold the charge or charger to the battery too long. If it's going to work it will work right away.