Converter charging at 16.3 volts
I installed a new light fixture with led bulb in my rv, after the first hour of use it exploded. Before I returned the burnt light fixture and blown bulb back to Camping World where purchased I though...
Forum Discussion
Brand loyalty is always good for a bun fight :) Anyway---
Smk, that guy seems to not understand the "15 minute thing" that both PowerMax and Iota does.
It looks like he is charging a battery that is already fairly high in SOC, so as soon as the 15 minutes are up, it goes to Float. As designed. If he put it on a battery that is farther down in SOC, it would stay in bulk until batt reached Vabs, then go to Float. As designed.
That was to get away from the WFCO 13.2 trigger the original PMs had which meant they would only go into boost if the battery were somewhere below 50% SOC.
BTW that 75% figure mentioned is not correct as such (as you must know)
If you put a 55 amper on a 100AH battery at 50% SOC it will reach Vabs very quickly at a low SOC in the 60s for SOC. With a 200AH bank it will reach Vabs later at a higher SOC
I got these results on some testing I did on that, with a 220AH bank
70 amp charger (32% charging rate) Vabs at 65% SOC
55 amp charger (25% charging rate) Vabs at 72% SOC
35 amp charger (16% charging rate) Vabs at 80% SOC
Smk often recommends a 35 amp charger over a 55 amp charger for a smaller sort of battery bank, which takes all that into account.
So if you are doing 50-80s with a 35 amper on a 220AH bank it will be all over before the thing drops to Float anyway.
You have to be very clear what the scenario is when deciding on which charging profile is most suitable.
I agree the PD with CW covers more of the likely scenarios than the others do, but it also has that weakness in not doing constant amps in bulk like the others do. (Not a big deal with many happy owners.)
Smk, that guy seems to not understand the "15 minute thing" that both PowerMax and Iota does.
It looks like he is charging a battery that is already fairly high in SOC, so as soon as the 15 minutes are up, it goes to Float. As designed. If he put it on a battery that is farther down in SOC, it would stay in bulk until batt reached Vabs, then go to Float. As designed.
That was to get away from the WFCO 13.2 trigger the original PMs had which meant they would only go into boost if the battery were somewhere below 50% SOC.
BTW that 75% figure mentioned is not correct as such (as you must know)
If you put a 55 amper on a 100AH battery at 50% SOC it will reach Vabs very quickly at a low SOC in the 60s for SOC. With a 200AH bank it will reach Vabs later at a higher SOC
I got these results on some testing I did on that, with a 220AH bank
70 amp charger (32% charging rate) Vabs at 65% SOC
55 amp charger (25% charging rate) Vabs at 72% SOC
35 amp charger (16% charging rate) Vabs at 80% SOC
Smk often recommends a 35 amp charger over a 55 amp charger for a smaller sort of battery bank, which takes all that into account.
So if you are doing 50-80s with a 35 amper on a 220AH bank it will be all over before the thing drops to Float anyway.
You have to be very clear what the scenario is when deciding on which charging profile is most suitable.
I agree the PD with CW covers more of the likely scenarios than the others do, but it also has that weakness in not doing constant amps in bulk like the others do. (Not a big deal with many happy owners.)
