I bought it like that, then put it on the charger, I thought that it should be like that, well, for an hour it charged exactly like that, but then it turned out that it was not charged.
I bought a bike, the battery charges, but it turns off, if I put the battery in the bike and turn it on to charge, it works, but if I turn on the light, everything turns off, or if I remove it from the charger, it turns off again.