On Sun, 25 Mar 2012 13:18:24 -0700 (PDT), joost
put finger to keyboard and composed:

However, now it seems that my
charger is only outputting 17.0 volts (always) and heavily
overcharging any battery that I connect it to.

I'm not familiar with your charger, but I would look for a device, eg
a MOSFET, in series with the output.

A photo of the innards might help.

- Franc Zabkar
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