Sometimes small systems are plenty
Friday my wife suddenly got the urge to camp. Immediately. All the TT has is the original Group 24 battery, 5w solar to maintain it and a 700w/1500w inverter I've never even run under significant l...
Forum Discussion
HiTech;
Last year, I used my 79AH Deka to boil a qt of water with an inverter and a 900+W elec kettle in 7 minutes. The kettle whistled at 11.6V. Over a few minutes, there was a rebound to 12.37V.
That equates to a C1 draw of 900W/11.6V = 78A from a 3+yo 53lb 79AH when new battery. That is encroaching into CCA territory. AGMs are all hybrids. This means flexibility in switching between low and high draws.
With GCs, you cannot handle high draws like C1 and keep your inverter running. Is there a BCI rating system that give any guidance on this? All of the BCI tests I have seen use low volt thresholds way below any inverter LVD ratings. I want to know what is going to happen if I draw constant Watts, not constant Amps.
With GCs, high draws are handled by adding batteries to divide the draws between multiple batteries so that the draw per battery is reduced to a low draw. For example, the 78A draw in my test might be spread across 4 x GCs at 20A per battery. IOW, with GCs you transform a high draw into a low draw by adding batteries until you arrive at a low draw.
HTH;
John
Last year, I used my 79AH Deka to boil a qt of water with an inverter and a 900+W elec kettle in 7 minutes. The kettle whistled at 11.6V. Over a few minutes, there was a rebound to 12.37V.
That equates to a C1 draw of 900W/11.6V = 78A from a 3+yo 53lb 79AH when new battery. That is encroaching into CCA territory. AGMs are all hybrids. This means flexibility in switching between low and high draws.
With GCs, you cannot handle high draws like C1 and keep your inverter running. Is there a BCI rating system that give any guidance on this? All of the BCI tests I have seen use low volt thresholds way below any inverter LVD ratings. I want to know what is going to happen if I draw constant Watts, not constant Amps.
With GCs, high draws are handled by adding batteries to divide the draws between multiple batteries so that the draw per battery is reduced to a low draw. For example, the 78A draw in my test might be spread across 4 x GCs at 20A per battery. IOW, with GCs you transform a high draw into a low draw by adding batteries until you arrive at a low draw.
HTH;
John
