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- 1). Look at the battery and if it's corroded at all, stop here because it can't be flashed.
- 2). Ground the battery by hooking the black alligator clamp from the 12-volt battery charger to the negative end of the old nicad rechargeable battery. The negative end of a single cell battery is the flat end.
- 3). Use the red alligator clamp to "flash" the old rechargeable battery. Tap the positive, or raised, end of the single-cell nicad rechargeable battery with the red alligator clip. Sparks may spray out of the ends of the battery during this process.
- 4). Securely hold both the black and red alligator clamps to the battery for up to three seconds to complete the flashing process.
- 5). Remove the alligator clamps. Retest the battery with a battery tester to see if it has been charged.
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