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Questions lithium polymer battery

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gamer87

Mar 11, 2017
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I own an electronic equipment uses 2000mA lithium polymer battery but I use this equipment rarely it is stored unused for months and years and I wanted to conserve this lithium polymer battery so that its maximum capacity and recharge does not fall to 1800mAh and it goes down, it was built to recharge 2000mah and I want to keep 2000mah of maximum recharge and I don't want to miss the recharge cycles of this battery
 

Bluejets

Oct 5, 2014
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Getting the most out of lithium batteries usually means storing at around half capacity.
Then when required, the battery is cycled and recharged to maximum.
It depends on the source / quality of the battery in question but I doubt you will ever get full capacity.
Storing for months might be ok but years...?? I don't think any will last that long.
Check battery university online for recommendations.
 

Audioguru

Sep 24, 2016
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I agree to store a Li-PO battery at 3.7V per cell.
I store the Li-PO batteries for my RC airplanes at the half-charged voltage every winter and they last for years.
I have the Li-ion battery from my daughter's first cell phone. It has been at half-charge for 22 years and still works fine.
 

gamer87

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What tips did you follow to make the lithium polymer battery last 22 years?
 

Audioguru

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What tips did you follow to make the lithium polymer battery last 22 years?
I told you that "It has been at half-charge for 22 years".
Also it was never made too hot.
Also it did not have thousands of charge-discharge cycles.
 

gamer87

Mar 11, 2017
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i need information storage conserve battery lithium polymer long time no use
 

Bluejets

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I told you that "It has been at half-charge for 22 years".
Also it was never made too hot.
Also it did not have thousands of charge-discharge cycles.

So not a Turnigy or similar 2200 3 cell for $18.00 then....:)
 

gamer87

Mar 11, 2017
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Store the lithium polymer battery with some no 0% charge is the best tip for conserving and preserving the battery as much as possible?
 

Bluejets

Oct 5, 2014
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Store the lithium polymer battery with some no 0% charge is the best tip for conserving and preserving the battery as much as possible?

0% charge means a dead lipo.
Don't read the recommended minimum voltage recommendations then..??
 

Audioguru

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Turnigy is Hobby King junk from China. My friend bought 10 Turnigy batteries but only 2 of them worked. The newer Nanotech batteries are improved.
 

Bluejets

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Turnigy is Hobby King junk from China. My friend bought 10 Turnigy batteries but only 2 of them worked. The newer Nanotech batteries are improved.
Appreciate the recommendation.
I just wondered which brand you managed to get 22 years from without it puffing up like a blowfish.
 

Audioguru

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Just now, I entered here and saw the Batteryuniversity Warnings Table that I did not see yesterday so I went there. It gave me a warning that my pc has a virus and that that Norton (I don't have Norton) will delete all my files. Microsoft Defender anti-virus software that I use says my pc is fine.

The 22 years old Li-Ion battery is Sanyo and has two AA size cells in metal cases with cardboard sleeves on top, spot-welded in parallel. The battery plastic case has a Sanyo label but the battery cells have no label. Today they measure 3.55V.
Many places, even Walmart still sell no-name-brand replacements for this battery.
 

Bluejets

Oct 5, 2014
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The 22 years old Li-Ion battery is Sanyo and has two AA size cells in metal cases with cardboard sleeves on top, spot-welded in parallel. The battery plastic case has a Sanyo label but the battery cells have no label. Today they measure 3.55V.

Ahha.....not lipo's then.
Yes, I have seen Sanyo nicads last extremely long periods.
Back in the 80's when flying RC aircraft, it was a common practice to chuck out the nicads after 2 years. They were relatively cheap then and 2 years of cycling would see a slight depreciation but not too much.
Still, the aircraft at the time had a lot invested in them in terms of time and money.
Therefore, come the 2 year old point and chuck 'em.

Near fell over when I saw the flying instructor still using the same batteries after 7 years especially since they really copped a flogging.
BUT, seemed to work out ok.
Dodgy trainer lead used to create more fizzy moments than batteries ever did. :):)

Tend to go to Eneloops now.
 

Audioguru

Sep 24, 2016
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There is no way that an old Ni-Cad cell is 3.55V. Besides, a Ni-Cad cell could hold a charge for 2 months if you are lucky.
I looked up the Sanyo battery number in Google and any battery retailers have lithium replacements.
 
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