Would a voltage chart showing what percentage of charge for a 24v battery be double the voltage of a 12v battery? My LIFePo4 24v battery without a load shows 26.77v which is twice the voltage in the12v chart showing it is close to 99% of capacity.
That is a very good chart! Not only does it show the volt/SOC relationship, but also graphically shows how little difference in voltage there is before the very rapid decline near discharge. Many people, especially those new the LiFeP04 batteries, don’t realize that a one volt drop... say, from 27 to 26 volts, can represent half of your battery bank’s power supply. It’s an eye opener coming from other battery types, for sure.This is a good chart IMO.
In addition to what Ampster said, a BMS will keep the cells from running on ether end of the scale. In ideal temps one can expect at least a 2000 cycle life if charging to 3.65 volts and discharging to 2.50 volts and keeping float voltages reasonable. The majority of us keep the cells between the knees of the curve which will help extend cycle life. That's what the chart represents more than anything IMO.Do the red zones represent anything in particular? For example, my understanding is that with lead acids it shortens the battery's life to discharge them completely... so staying within the 50% - 100% charge range is better for longevity. Does this chart show a similar "ideal charge range" for LiFePo4s (roughly 20%-99%)?