Hi Wayne. As it’s an offgrid system open loop my preference is for batteries that have a built in display so you don’t need wifi/web connection to monitor. If the customer has a FNDC or trimetric the accuracy of those with lithium can take a while to dial in. Having an actual % reading on the battery has been very helpful to the few dozen systems I’ve retro fitted lithium into offgrid systwms. I also look for batteries that give setup settings for open loop. Most don’t. Ive used a few brands and have been happy with eg4. Out of curiosity 5kwh seems extremely small. Jay On Jun 28, 2025, at 9:05 PM, Wayne Irwin via RE-wrenches <re-wrenches@lists.re-wrenches.org> wrote:
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