Time for new batteries for my AF811
The last 2 years or so, the original batteries in my 2010 AF811 have pretty much been useless. I haven't used the camper much during the summer of 2013 and 2014, and most of the time I had shore powe...
Forum Discussion
There is more to the picture then the 'wire size'.
While I have not reverse engineered the modern AC/DC converter in my current camper the 'old style' one in my last TC was outfitted with current limiting resistors connected directly to the +12V feed from the truck thereby reducing the trucks possible charge current to <5A.
Of course this can be easily bypassed.
If your designing your own truck-to-TC charge circuit you might want to take into account the total AH capacity of your on batteries and what might be a safe charge rate (which does not boil the water out of them) might be.
Sealed AGM battery owners require an even less charge rate then vented battery owners.
In my last camper I used a 30A PWM solar charge controller to regulate the energy provided by my truck to charge the TC batteries. They may not have charged as quickly as a nearly direct connection - but they did not need 'watering' very often ether.
YMMV - let the battery cooking commence!
While I have not reverse engineered the modern AC/DC converter in my current camper the 'old style' one in my last TC was outfitted with current limiting resistors connected directly to the +12V feed from the truck thereby reducing the trucks possible charge current to <5A.
Of course this can be easily bypassed.
If your designing your own truck-to-TC charge circuit you might want to take into account the total AH capacity of your on batteries and what might be a safe charge rate (which does not boil the water out of them) might be.
Sealed AGM battery owners require an even less charge rate then vented battery owners.
In my last camper I used a 30A PWM solar charge controller to regulate the energy provided by my truck to charge the TC batteries. They may not have charged as quickly as a nearly direct connection - but they did not need 'watering' very often ether.
YMMV - let the battery cooking commence!
