Battery storage

[ThinkPad]

I just purchased a highcapacity battery for my thinkpad. But I only use it when travelling. For everday usage I use the standard battery.
My question, is there any harm being done to the battery just sitting there not doing anything. Meaning not in use or not charging.

Thanks

[Sasha]

Suggested storage by ThinkPad experts (as informed to me):

Charge it to 40%, keep it in a ziploc/plastic bag and store it in a fridge. Ensure that the minimum charge is 40%. Checck the battery charge level atleast once a month.

Do not let the battery lie withour charging/ or less than 40% charge, since the chemicals in the battery may get adversely affected!

HTH

[ThinkPad]

Thanks for the info. After I got back from my trip, I charged that battery and put it in the drawer. Its been sitting there since.

[rhema83]

Suggested storage by ThinkPad experts (as informed to me):

Charge it to 40%, keep it in a ziploc/plastic bag and store it in a fridge. Ensure that the minimum charge is 40%. Checck the battery charge level atleast once a month.

Do not let the battery lie withour charging/ or less than 40% charge, since the chemicals in the battery may get adversely affected!

HTH

Just to point out that what I read from Battery University website is different. As long as the charge stays at about 20%, it should have its maximum lifespan. When it is at 40%, degradation is up by 15%.