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...ge left, which I verified was incorrect.] 1b. If for some reason the UPS never reaches 100% charge, this can be remedied (in the ACP ES-750 case), by leaving it unplugged for 1 week. ? ? ? [Doing this allowed me to recover from the case in 1a above. After that the procedure below, as in : http://excessups.com/blog/manual-runtime-calibration-apc-ups/ ? ? ? ?worked fine.] I would add that it is worth mentioning in the FAQs that often a replacement UPS costs only slightly more than the replacement battery for the old one, as I found out after trying this procedure. thanks, --jack ____________...