B&D VEC1093DBD vs Mega Watt S-350-12
As some of you know I have a bank of four CR235's in series parallel. And you also know that I have a Mega Watt S-350-12 that I have to top charge them. And that it takes a long time for the batteries...
Forum Discussion
sjturbo,
You may recall our discussion about voltages in your other thread. I just spent a few weeks trying to get my two 215Ah banks wired back to 430Ah's. It was a bit of a chore to get the voltages of the two 215's to balance out in parallel. But now they are resting at identical voltages throughout.
What I have noticed consistently is, my 6's react to higher voltages somewhat like a reverse peukert effect. After a good top charge at 15+ volts, their resting voltages drop significantly, and become unequal. And the voltages are unequal during the charge. But then if I follow up with another (gentler 14.8v) top charge, resting voltages come back up, and equal out; and voltages across each individual 6v are all equal during the charge, as well. So, just something to watch for.
That bank will easily handle a 100a charger during cc and cv. That's a C/4.7 rate... pretty much the same as my 45 amper on my 215Ah bank. At 14.8v, I see amps begin to taper at a little over 80%. This means a 100 amper would stay maxed out to over 80% soc on your bank.
You may recall our discussion about voltages in your other thread. I just spent a few weeks trying to get my two 215Ah banks wired back to 430Ah's. It was a bit of a chore to get the voltages of the two 215's to balance out in parallel. But now they are resting at identical voltages throughout.
What I have noticed consistently is, my 6's react to higher voltages somewhat like a reverse peukert effect. After a good top charge at 15+ volts, their resting voltages drop significantly, and become unequal. And the voltages are unequal during the charge. But then if I follow up with another (gentler 14.8v) top charge, resting voltages come back up, and equal out; and voltages across each individual 6v are all equal during the charge, as well. So, just something to watch for.
That bank will easily handle a 100a charger during cc and cv. That's a C/4.7 rate... pretty much the same as my 45 amper on my 215Ah bank. At 14.8v, I see amps begin to taper at a little over 80%. This means a 100 amper would stay maxed out to over 80% soc on your bank.
