Hi all
going to put away my set of mtb batteries xml light set
Do i need to drain the battery of juice before i retire it for a few months or so!!
If not what is the best longterm storage solution so that i do not bugger up the battery pack??
Many thanks
Martin

Funnily enough, was tempted to ask exactly this question myself…

Store them at 40% charge in a cool dry place

http://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries

http://batteryuniversity.com/learn/article/charging_lithium_ion_batteries

Best way with any Li-Ion battery is best stored just over 50% charged if left for long peroids.
Although the battery isnt being used, the protection circuit still monitors each cell – although this is only a few milliAmps this can build up if left in a relatively low state of charge. This will continue to drain the battery, even below its lower level cut off voltage limit.

Also Li-Ion batteries, do not like to be left for long periods 100% charged either and can effect the long term impedance of the battery.

Lastly, Not kept in a fridge either.. just somewhere cool, like a cupboard.

Smudge

smudge YGM! 😀

Sorted GSI. nearly back on track, thanks again for everyones patience over the last few months

smudge is a top man!
Thankyou for sorting me out.