Re: Freedom/20 Inverter Charger
Reply #9 –
Freedom inverters before serial 100,000 in the case of out Feb 97 built 97 is below the serial number to have the BTMS input.
In hot weather use the long overcharging can bulge the cases permanently from the internal gas build up.
So as Brett posted you could alter the charging voltage to reflect the batteries actual temperature in a real time basis.
Undercharging in cold weather. Overcharging over 75 degrees lowers the battery life and the available amp hours.
If you go from power pedestal to pedestal the battery capacity retention is not as important versus you run on batteries a lot.
Coach came with gel batteries that can take over and undercharging better than the other types as they do not need and can not be equalized.
Undercharging AGM's cause lost capacity and only lifeline's can be equalized.
So in cold weather a AGM battery charged without a BTMS may slowly lose capacity as the charging voltage should have been increased.
BTMS have been available for 20 years now.
Most issues I had long ago with owners satisfaction with their coaches were battery related.
The coach IS the 12 volt system. Like I said unless you hardly use the 12 volt side?
We enjoy rving and dry camping