![]() Proper battery activation this should include a few charge / deep discharge cycles so the battery plates to become fully active, especially when the NEW battery comes from storage (manufacturing date up to be sold and get installed). I did read an article about improper battery activation, that this might be the issue, because about everything else the battery seems as undamaged. The new (used) battery that I found for my battery pack, this shown signs of weird behaviour about this to get fully charged, and to also about this to have the expected termination voltage after a full charge. The battery pack this is 2x 12V at 45AH Sealed Lead-Acid Maintenance Free. If I would care for reverse engineering I would use my oscilloscope instead. ![]() Pulse time alive this is 10 seconds, then another one will appear. I do not care for reverse engineering of how the APC pulse charger works in detail, but I did get good clues from my good in quality and fast clamp meter.Īs example, Peak of the pulse could be up to 10A, but most part of active pulse duration, this is half of that. ![]() With the battery pack this be depleted, constant current mode (CC) this activates for the first 35 minutes, then all the rest charging process this is made due pulse charging. I was unaware of that detail in all these years. The final test results are extremely surprising, this specific APC Smart UPS XL series, it does come with pulse charger. UPS calibration internal process = battery pack this gets depleted down to 20%, and UPS now has calibration data of how long is the new run-time in minutes.Ĭorrect method of 1000W UPS calibration, this is the load to be at 60% of what the UPS this is capable to support as load.Īnd therefore I did load testing at approximately 528W at 230 Volts. Today 22-10-2021 I thought to setup my own measuring monitor so to measure and log of UPS calibration internal process, and of the new charge cycle. I did pay high price for the best battery of Panasonic ( the most expensive than all others), and since their dead I am now using a pair of used lead-acid batteries. I own my APC UPS 1000XL since 2003, this accepts external battery packs.Īt the year 2004 the internal battery pack were degraded, and I did replace it with equiv-eland 2x 12V 17AH Panasonic, with life cycle estimate of 10 years.Īt the year 2010 the Panasonic battery pack were degraded too, in just six years that the expectancy of 10 years specification.
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