NRALIFR wrote:
The camper battery is a VMAX SLR125, which is actually one of their batteries marketed for solar use, but they work fine in RV deep-cycle as well. According to the specs, they should be charged at 14.4-14.9 volts, and the DC-DC charger provides 14.6 volts in bulk/boost mode, 13.3 in float.
:):)
This is led-acid battery and rated for 13.5-13.8V float.
Meaning your B2B charger keeps it undercharged.
And again, from my experience when voltage above 14V makes quick charge, it shortens battery life.
For decades driving Fords and Mercedes - batteries in Mercedes last up to 13 years, where charging system doesn't exceed 14V, when in Fords charging at 14.5V AGAIN this year, I had to replace batteries who just passed 3 years.
