2000 Watt Invertor Issues, Need Help
My 2000 watt Prosine invertor works fine on small loads like TV, computer, etc, but when I fire up my LG 1000 watt micro wave/convection oven the invertor kicks off after 8 seconds, my batteries are n...
Forum Discussion
Hi, 2oldman,
The bank had just come fresh off a charge, and still had a significant amount of surface charge. Perhaps that could account for the seemingly small dip in voltage?
Notice also, after the 20 sec MW run, Vbatt remained down at 12.9v. That's a .13v drop in Vbatt, down from 13.3v... equal to about 22 Ah's. But less than 1 Ah should have been consumed. So it certainly appears it was surface charge being consumed.
This was my post from the other (parallel) thread:
"If your Vbatt did actually drop .13v, from just 20 seconds of microwave use, then that's a loss of about 22 Ah's on a 200Ah bank. That seems highly unlikely, seeing as 1600w/120v = 13.33a x 10 = 133Ah's per hour x .00555 hours = 0.74Ah's.
... So it was definitely surface charge being burned off.
The point being, even though Vbatt was at 13.3v, the bank may not have been fully charged. It can take several days for a significant surface charge to be self discharged."
The bank had just come fresh off a charge, and still had a significant amount of surface charge. Perhaps that could account for the seemingly small dip in voltage?
Notice also, after the 20 sec MW run, Vbatt remained down at 12.9v. That's a .13v drop in Vbatt, down from 13.3v... equal to about 22 Ah's. But less than 1 Ah should have been consumed. So it certainly appears it was surface charge being consumed.
This was my post from the other (parallel) thread:
"If your Vbatt did actually drop .13v, from just 20 seconds of microwave use, then that's a loss of about 22 Ah's on a 200Ah bank. That seems highly unlikely, seeing as 1600w/120v = 13.33a x 10 = 133Ah's per hour x .00555 hours = 0.74Ah's.
... So it was definitely surface charge being burned off.
The point being, even though Vbatt was at 13.3v, the bank may not have been fully charged. It can take several days for a significant surface charge to be self discharged."
