Lithium Ion Battery Charging

[MatthewDal]

Hello everyone,

I'm currently trying to find a charge controller to use with a 12 volt, 10 aH lithium ion battery. My understanding was that the battery would consist of 3 cells and therefore measure 12.6 volts when charged. Therefore, to charge I expected I would have to use around 12.6 maybe higher. However, on the data sheet for the battery which I'll link to in case it's of any help it says it should be charged at 14.6 volts minimum. Does this seem a little high for a lithium ion battery? Anyone have any ideas why it is so high?

http://cdn2.hubspot.net/hubfs/441554/docs/RELiON_SpecSheet_Final.pdf?t=1453755522909

You have to scroll down to the 12 volt 10 aH one

 

[itsmoked]

I believe that battery contains 4 cells. That's probably why it's higher than you expect. They are nominal 3.2V cells.

Keith Cress
kcress -

http://www.flaminsystems.com

 

[IRstuff]

http://www.cobox-ebikes.com/296/basic-understanding-of-lipo-li-ion-and-lifepo4.html

Your datasheet states that cell type is LiFePO4, and the site here states that a 4-cell LiFePO4 requires 14.4V for charging

TTFN
I can do absolutely anything. I'm an expert!
faq731-376 forum1529

 

[MatthewDal]

Thank you both, appreciate it.

 

[itsmoked]

Interesting batteries by the way. Hate their idiot marketing website but I'll keep those batteries in mind.

Can I ask what kind of product/device you intend to run with it?

Keith Cress
kcress -

http://www.flaminsystems.com

 

[MatthewDal]

Hey Keith,

Plan is to use it in a prototype of a portable solar phone charger unit.

 

[itsmoked]

Gads that'll certainly charge a few phones! LOL
Thanks.

Keith Cress
kcress -

http://www.flaminsystems.com