Series 12v Chargers ?
Bestconverter ad says, "The PD9100L Series can be wired in parallel to charge at much higher current rates. They can also be wired in series/parallel to charge 36, 48, 60, 72 and higher voltage bat...
Forum Discussion
BFL13 wrote:
These are single constant voltage but adjustable voltage chargers, so I can make them both 14.8 (or anything else in their pot range (12-15.5v)
I am still amazed at the idea here. Right now I can get 155 amps on my 12v bank with the 55 and 100 ampers in parallel. But that maxes out the Honda 3000. If I can run the 75 and 100 on the 24v bank (same batts re-wired) with the Honda, that is 75 on the 24v bank, same as 150 on the 12v bank? Wow!
That is not slower/longer, so I am still suspicious. :)
With a 24v bank I could run the 24v solar panel with a cheapo 12/24 PWM controller instead of the more expensive MPPT. (Tested that--gets equal or better results--see posts from two years ago or whenever that was)
Would still need a 24v inverter and a 24-12 converter (or put the rig's 12v converter on the 24v inverter.) The big 24v volt inverter is the killer for money, I think.
How did your 55A in parallel become a 75A in series? Or do you have three converters in question here?
But yes, half the current at double the voltage is the same power, and hence the same degree of overall battery charging (and the same generator loading). There's no magic involved. It's no different than an air compressor that may be switched between, say, 17A at 120V or 8.5A at 240V; the motor produces the same power and the air gets compressed at the same rate and your electric meter spins around and around the same amount regardless.
Frankly, I don't see any real advantages here to the 24V setup, and a lot of needless work and futzing and diddling your RV's electrical system and replacing 12V components with 24V components (or adding a DC-DC converter to run them). If you enjoy tinkering and fiddling about in its own right, then of course feel free to tinker and fiddle away.
