I have an older CygoLite headlight that I used for commuting for a couple years. It's been in storage for about 12 months, and now it seems like the battery won't take a charge. I think its a variation of a NiCad battery, not lithium. The battery looks like this:
Is there a way to recondition a battery or do I just need to replace it?
Note - I have plugged the light assembly into another similar battery and it works, so I know it's not the bulbs.