Let's face it, flooded lead acid batteries are given ah ratings down to 0%, yet it's recommended not to go below a 50% DOD on a regular basis. I think the AHI battery will be similar in that one would normally not want to go below about 50% DOD, to prevent inverter problems when loads come on, and also to maximize cycle life. What the manufacturer refers to is that the battery can be taken down to 0% SOC without significant consequences. Not necessarily something one would want to do on a regular basis. It may be possible to go down to about 20% SOC with very light loads.
The way I see it, batteries are the biggest expendable with an off grid system, due to frequent replacement. A battery that's priced reasonable, give reasonable performance, and most importantly, live for a very long, long time, will turn out being very cost effective!
The way I see it, batteries are the biggest expendable with an off grid system, due to frequent replacement. A battery that's priced reasonable, give reasonable performance, and most importantly, live for a very long, long time, will turn out being very cost effective!
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