[GFXjamie]

I wouldn't assume based on age usually that the battery is bad or good. Usually a load test will tell right away. If you charge the battery right up, then turn key on, lights, stereo everything and check voltage it will give you some sort of load to see how much it drops. A fully loaded battery on a load test shouldn't drop below 10-11 volts pending load put on it. With scooter batteries we consider them on their way out at 10.5 under load

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The number under load would be using a regular battery load tester aka toaster