Results for: so I have a motorcycle and use the Optimate1 battery tender. One day while using the tender I left and came back 6 hours later to find the Optimate still charging my battery. The battery was very hot so I unplugged right away. I let the battery cool off and the next day I started the bike and the battery was fine. I used my Volt meter and the battery was holding a charge of 14.5 Volts and when I started the bike it did not drop below 9 Volts, and when the bike was running it puts out 16 Volts so I know the battery is being charged. Since the Optimate overcharged my battery it won't go into the green maintain mode - It just keeps charging.
I took the Optimate back to the shop thinking it was the charger, but they hooked it up to 2 batteries and it went to maintain within a minute like it used to for me before this happened. Why won't the Optimate go to maintain when the battery is fully charged when I test it with my Volt meter? Is the battery bad possibly? And if so why does it give a full charge and still fire up the bike fine? I'm not sure what to do?