Was tinkering with a handheld vac tonight because it would only run for about 30 seconds. Opened it up and noticed (3) subC nicad cells, voltage check indicated 3.7 volts so I thought what the heck I grabbed a good protected TF Flame (4.15v) and connected it to the vac. The motor spun about 2 times then stopped. I did this just a few more times until it would no longer spin and gave up. Checked the voltage of the TF and now it reads 1.89v :( . I put it on one of my cheap chargers but the light stayed green indicating a full charge. Checked it again an still at 1.89v.
What are your thoughts? Did I kill the protection circuit in this battery?
I actually have 2 of the cheap DX chargers. Tried both and each time the lights stayed green indicating a fully charged battery. I took it out of the charger and set it out in the middle of my driveway. Just checked it again and now it reads 1.9v.
I just checked my mm and know that it's good so I think i'll just let it sit out in the driveway overnight and check it in the morning. Not sure I want to risk trying it in my WP2 II?
The battery is not doing you any good now so you might as well rip off the wrap and protection circuit, Try charging and if it works just make a wrap out of electrical tape and you have a sweet unprotected ghetto battery. I have a few, work fine.