I believe it's the contacts. When I first installed the new battery it rattled inside the headlight. I removed it a bent the negative contact out a bit in the headlight and that tightened everything up. The negative contact is a sprung steel tang (for a lack of a better term). The positive contact in the headlight is just a flat faceplate. Put it on the charger and the red indicator light never did go to green indicating a full charge. Tried turning the headlight on and nothing happened. Put the original battery back in and it works. Orbtronic said to try cleaning the contacts which I will when I get a chance.
Thanks for the links,
Matt
Originally Posted by
Spld cyclist
Does the Orbtronic battery fail to work because the contacts don't reach or something? If it works, just use it.
18650 cells have some variance in length and width due to the protection circuits they may or may not have. Here's a review showing the dimensions of a bunch of common cells. You can probably find something close to the original battery:
Battery test-review 18650 summary
If the original is protected, you'll want a replacement that is as well. (For more info, look here:
The Anatomy of a Protected Battery) Obviously, the Orbtronic battery is protected, so this just applies to picking a different cell.