Cree T6 battery

[compo]

I have a CREE XML T6 light. I bought it for last year's Dunwich Dynamo, and impressive it was. I haven't used it since and probably wont use it again until next years Dynamo. I am wondering about the batteries. I gave them a charge a few weeks ago (I have two battery packs) and am wondering if they do in fact need an occasional charge, or even a discharge/charge cycle, to keep them in good condition. Anyone any thoughts?https://www.cyclechat.net/posts/2743504/

 

[fossyant]

You are supposed to store them with a 2/3rd charge. I don't and only had one pack fail in the last few years, and that was a couple of dodgy cells. I'd check them after a few months and give them a top up.

Oh a and check them a few weeks before you next need them.

 

[02GF74]

what to do depens on the battery chemisty, be it nicad, nimh or lipo, and I wouldn't be surprused if you find confilictin inf. on theweb.

some info here:
http://www.camlight.com/techinfo/techtips.html

the following recommendations:

• If you're storing a NiMH battery pack for a month or less, discharge it to 0.9V/cell. No need to partially charge it before storing it.
• If you're storing a NiMH battery pack for longer than a month and you own a charger that will not start if the voltage of the cells has dropped too far, and you don't want to cycle the pack every month or so, discharge the pack to 0.9V/cell and partially charge it (about 10%). When you're ready to use the pack again, you will probably need to cycle it at least once to restore its capacity and voltage under load.
• If you're storing a NiMH battery pack for longer than a month and you have a charger that won't prevent you from charging when the pack is below a certain voltage, just cycle the packs every 4 weeks or so. This helps to condition the cells and makes it easier to bring the packs back up to their rated capacity and voltage under load when you're ready to use them.