[Blastyman]

Originally Posted by MadMax

Well, I'm pretty sure the G18c charger is not designed for 120VAC input. I opened mine rather non reversibly. Initially I imported this for retail, but realized that I couldn't because it does not have CSA or UL approval. The 100V warning is also an indication of non compliance.

What I find inside is not very surprising. A step down transformer connected to a timer circuit. The timer IC is CD451be which is a fairly simple timer IC branded by Texas Instruments. It controls a PNP transistor to start and end the charge cycle. There is NO voltage measurement circuitry to be found (hence no peak detection). Furthermore, I see no evidence of voltage regulation downstream of the transformer which means no ability to regulate input voltage to the charge circuit. I see some thermal overload protection on the transformer core, but I don't know if it's resettable or single use.

Journeyman: you made some pretty broad claims without observations or calculation. Engineers cannot make justifiable claims without good backing.

ok in this case I will just use my regular charger instead as it will be better for the battery.