OK not all, probably over 99% of multi-stage converters in use operate that way.
I believe Xantrex only has 2 stages. The others you listed are battery chargers. Not what we're talking about.
If you think lowering the absorption mode (or normal mode) voltage is crazy, then you must know more than the engineers of WFCO, PD and Iota combined. You're getting quite wacko.
Sal
BFL13 wrote:
Salvo wrote:
That's a fair question. All modern multi-stage converters have an algorithm to prevent boiling. They are designed to reach the max boost voltage and then go into absorption mode (at a lower voltage level).
Never say "all." Vector , Xantrex and Deltran don't. The whole idea is to get to the threshold voltage and switch to constant voltage at that threshold while amps taper doing the absorption stage. In fact Deltran has now added a new stage after the absorption stage where they *increase* the voltage to 16v for a time before dropping into Float.
Lowering the voltage for the absorption stage would be crazy. That would make the battery acceptance rate less in amps and prolong the recharge time a bunch, defeating the whole objective of achieving the fastest (but safe) recharge time for that size battery bank.