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haas:projects:solarbattery [2022/04/26 18:23] – [20220426] wedgehaas:projects:solarbattery [2022/05/12 12:45] (current) – [20220505] wedge
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 Around 2:30pm, cells are solidly at 3.32V (with some signs of advancing to 3.33V). 6.2A, still over 20W. Around 2:30pm, cells are solidly at 3.32V (with some signs of advancing to 3.33V). 6.2A, still over 20W.
 +
 +====20220427====
 +Left it charging overnight.
 +
 +Cells are now 3.33V, nearing 3.34V. Amperage has dropped to about 5A (17-18W).
 +
 +Still a far cry from where I'd like things to be.
 +
 +====20220428====
 +Second consecutive overnight. We've been charging solid since Tuesday morning.
 +
 +Cells have reached 3.35V. Amperage is down to 3.45A (12W).
 +
 +====20220429====
 +First serious run at the cabin. With panels wired for 24V and existing battery bank likewise, on a sunny day as this, I've been beyond pleased with the performance of my system.
 +
 +Cells drifted back to 3.33V.
 +
 +Now 4:18pm, cells measure once again at 3.35V (15W).
 +
 +====20220430====
 +Another day of charging at the cabin.
 +
 +====20220501====
 +While the sun is out, getting some charging in.
 +
 +Each resuming seems to restart us at the 3.32V/3.33V range, and a higher initial amperage (6A, 20W), and then dwindles throughout the day. Cells measuring 3.36V at the end of the day in recent days.
 +
 +====20220503====
 +Started charging the second group of batteries.
 +
 +====20220505====
 +Second group of batteries, charging since Tuesday, are now up to 3.32V.
 +
 +====20220512====
 +After paralleling all 8 on Monday afternoon (20220509), and had upped the voltage to about 3.55V, I arrived today to find them fully charged at 3.4V (0A, 0W!)
 +
 +So, I upped it to 3.65V and left them to charge. Had a nice 7A+ going. Not sure if I am keen on leaving them to charge through Saturday. We will see. Pleased though that we seem to be wonderfully close to complete with this endeavour.
 =====References===== =====References=====
haas/projects/solarbattery.1650997410.txt.gz · Last modified: 2022/04/26 18:23 by wedge