Battery recommendation
As some may know..I had my battery ripped off today. Looking for recommendations.. 12v? 6v? A local guy can get me 6v Trojans for $200 each...
Forum Discussion
Specifications on the battery are:
Trans Canada DC31-280 BIG RED DEEP CYCLE BATTERY GR DC31 140AH 1000MCA 280RC
If the microwave draws 1200 watts it will draw about 120 amps DC. That will run the battery totally flat quite quickly. Read about the Peukert effect. That 120 amp load will be seen by the battery as about 281 amps DC. Five minutes will draw about 23 amp-hours from the battery.
150 watts x 5 hours = 750 watt-hours / 12.8 volts =~ 59 amps returned to the battery bank under perfect solar conditions and the battery below 85% state of charge. I would up the solar to 210 watts.
Group 31 batteries are generally considered to be a starved electrolyte design.
Trans Canada DC31-280 BIG RED DEEP CYCLE BATTERY GR DC31 140AH 1000MCA 280RC
If the microwave draws 1200 watts it will draw about 120 amps DC. That will run the battery totally flat quite quickly. Read about the Peukert effect. That 120 amp load will be seen by the battery as about 281 amps DC. Five minutes will draw about 23 amp-hours from the battery.
150 watts x 5 hours = 750 watt-hours / 12.8 volts =~ 59 amps returned to the battery bank under perfect solar conditions and the battery below 85% state of charge. I would up the solar to 210 watts.
Group 31 batteries are generally considered to be a starved electrolyte design.
