I made the mistake of buying a Chinese-made battery-operated electric drill, which worked fine until I tried to charge the batteries. I emailed the manufacturer but needless to say, I have received no response.
The rechargeable batteries are rated at 18V. The charger consists of a small receptacle with a few electronic components in it, and a plug-in transformer 120v. AC, 60 Hz to 22v. DC, 500mA, 11 VA. The transformer does not get warm no matter how long it is plugged in, and the pilot light on the charger that should indicate when it has charged the battery, never lights.
I've spent a couple of hours googling for transformers of similar specification, with no success, and I refuse to spend more for a variable voltage transformer than I've paid for the entire drill. Any suggestions as to a commonly available transformer that would get the job done, even if slowly?