WirthCo 20026 Battery Doctor Black CEC Certified 6/12V 900MA - Wall Mount Smart Battery Charger/Maintainer

Ordered this for my fathers motorbike. He asked me to get one for his mower next winter.

Bought this to keep my stand-by generator charged. Fits the bill.

does not work on 12 volt batteries! did not recognize it to charge it! worked on the 6 volt...