2017 crf450 with estart has a tusk lithium ion tlp5zs battery in it and doesn’t seem to hold a charge. Ive tested it off the bike and while running and appears to be charging while the bike is running, but then depletes again and won’t hold a charge. My question is will a friends rc car battery charger (i charger) be able to charge this battery? Before dropping $100 on a battery and it not be the actual problem, I was looking to atleast pin point the battery not being able to fully take a charge. Thanks guys.