[30 Closed Cab PU]

I also tried 4 Black and Decker BM3B maintainers last year. 2 on 6V setting and 2 on 12 V setting (had 4 batteries). Worked OK on the 12V.


In my unheated detached garage and on 6v they stopped working once temp got below 25 degrees F. They did not drain the 6 V batteries, and on 6v they started working again above 30- 35 degrees.


So far this year the above NOCO GS750s have worked down to 7 degrees F, waiting for even colder weather to see if they hold up.