Try starting up.
See low battery, led night charging.
Next day, still low battery.
I let it in box at 80%, a year or maybe 3, thought that's was li-ion battery.
Google, the zumo battery, looks that's still used a nickel-cadmium battery, that's need always the highest load all the time, to conserve the battery. And discharged completely. Thought I. These are bad batteries.
I think the battery is for the bin.
Can I buy li-ion batteries for the zumo xt or does it work only with nickel-cadmium?
There are two cells, I saw?
Type?