1AU - Universal Battery Charger & Rejuvenator

[Aaron Murakami]

Hi, I already have the 1AU and using it everyday. Everything is working fine. I had to put the charger into the basement because of quiet loud buzz/noise/rattle while charging. It's kinda hard to be with it in one room while in operation. Is it normal? How about your charger ?

Thank you

The bigger the battery and/or the higher the setting, the more noise.

As long as your batteries are within the rating for each particular setting, you're charger is fine.

[gabiX87]

Another question.

Can I charge two 12V power tool (or LABs) batteries in series as 24V on the 7 or 8 setting on the 1AU ?

EDIT: With identical Ah rating and chemistry , of course.