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Windows 7: How to store backup notebook battery?


13 Aug 2013   #1

Windows 7 Ultimate
 
 
How to store backup notebook battery?

Hi.

I have a HP 6720s notebook and I have 2 batteries for it.
Both of them are functional, but I'm carrying the second one as backup if I need longer battery time.

How should I store it? Is a plastic bag OK or do I need a special antistatic bag?

Also I read somewhere I shouldn't keep it 100% charged, but on 50%. Is that true?

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13 Aug 2013   #2
whs
Microsoft MVP

Vista, Windows7, Mint Mate, Zorin, Windows 8
 
 

I would use a paper bag. The charge will decrease over time anyhow - even it it is not used. But I never heard of the 100/50 rule.
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13 Aug 2013   #3

Win 7 Ultimate 64 bit
 
 

Quote   Quote: Originally Posted by whs View Post
I would use a paper bag. The charge will decrease over time anyhow - even it it is not used. But I never heard of the 100/50 rule.
It's true. Laptop batteries not being used for extended periods should be stored at 50% for longer battery life. Same for if the laptop is mostly being used on AC (my notebook comes with a charging program that can be set to maintain the battery at 50% when running mostly on AC). However, if one is using them frequently and needs long battery use time, then they should be kept charged to 100%. Whether the OP needs to keep the spare battery at 50% or 100% depends on how often the batter will get used. If only occasionally, 50% would make it last longer but if it gets used every day or two, or the OP needs more than 50% to get through the day when the battery is use, then 100% would be alright.
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13 Aug 2013   #4

Windows 7 Ultimate
 
 

Great. Thanks to both of you!
My System SpecsSystem Spec
13 Aug 2013   #5

Windows 7 Ultimate x64 SP1 OEM
 
 

Your battery is Lithium Iron it has no "Memory Effect" you my keep it charged at 100% as that is best for when you want to use it.
I just suggest that you rotate your batteries every week or two so they are both in use.
Lithium will lose 5% of it charge per month.
If a Lithium battery is full discharged it is finished.
A Lithium batteries life has started from the moment it was made whether it is used or not.

It is only older batteries such as NiCad or NiMh that you need to look after in a better way.
My System SpecsSystem Spec
13 Aug 2013   #6

Win 7 Ultimate 64 bit
 
 

Quote   Quote: Originally Posted by MeOnMine View Post
Your battery is Lithium Iron it has no "Memory Effect" you my keep it charged at 100% as that is best for when you want to use it.
I just suggest that you rotate your batteries every week or two so they are both in use.
Lithium will lose 5% of it charge per month.
If a Lithium battery is full discharged it is finished.
A Lithium batteries life has started from the moment it was made whether it is used or not.

It is only older batteries such as NiCad or NiMh that you need to look after in a better way.
Memory Effect isn't the issue here. Memory Effect is what happens if you charged the older NiCads before they were fully discharged. It reduces the capacity of the batteries. With laptop lithiums, if they aren't being used, storing them at 50% charge will make them last longer than if nearly discharged or fully charged. That is what many, if not most or all, laptop manufacturers recommend.

Rotating the batteries as you suggested is excellent advice.
My System SpecsSystem Spec
13 Aug 2013   #7

Win 7 Ultimate (64-bit), Win 8.1.1 (64-bit)
 
 

Lithium batteries have a finite life, irrespective of the number of charge/discharge cycles. It's lifetime begins the day it is manufactured and the clock continues to tick whether you use it or not which is why it is a good idea to alternate the batteries.
My System SpecsSystem Spec
14 Aug 2013   #8

Win 7 Ult 64-bit
 
 

I think it's better to swap the batteries in a couple of using periods - the primary goes for a backup and v.v.- it will give them an equal working conditions.
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 How to store backup notebook battery?




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