After testing the remaining capacity following 18 months of storage, The Zippy battery was recharged, remained idle overnight, then retested under a 2.1 Amp load. The capacity was up to 72.5% (3.0 AH), which is considered “failed” (less than 80% of rated capacity).
First charge/discharge cycle after prolonged storage (18 months)
Past experience has shown that doing a second charge cycle after prolonged storage will further increase the capacity. We shall see.
