Camera battery storage question

[JohnnyRebel]

I'm going to be putting up my old Coolpix 995 and the D40. This MIGHT be long term storage. What is the best way to store these li-ion camera batteries? I think they should be fully charged and stored outside the camera.

JR

 

[Binky]

My understanding is that about 50% charged and stored in a cool environment is best. If you want to store them for a very long time, discharging and recharging at some interval (6mo?) will help keep them fresh.

 

[corkyg]

For Li-Ion batteries, Panasonic's recommendation is this: "The batteries should be stored at room temperature, charged to about 30 to 50% of capacity. We recommend that the batteries be charged about once per year to prevent overdischarge."