INVALID for negative comments, I simply had a very small basic charger without an indicator and I removed it earlier, so it didn't charge enough... with a new small smart charger, it automatically adjusted and raised it to 12.83 volts... it took many hours to recharge it after 4 months of initial testing with lights, it had dropped by half and I didn't make long trips to charge it through a rectifier... so it seems that it is capable and a good price... additionally, the smart charger keeps it fully charged through trickle charge now that winter is approaching and the bike is moving less... the box has a red seal indicating it is from 2020 and a sticker with manufacturing from Singapore. The only negative is that during refilling, one click of liquid, the yellow plastic screw on top broke and I improvised a fix