LiFePO4 low-voltage cutoff, needed?

Vermonter73 · Sep 14, 2008

I'm thinking of putting together a bike light using a Malkoff M60F and a 9.0V LiFePO4 battery pack. Do I need to worry about draining the batteries too far?

M60F - http://www.malkoffdevices.com/shop2/index.php?main_page=product_info&cPath=1_8&products_id=22
Battery pack - http://www.batteryspace.com/index.asp?PageAction=VIEWPROD&ProdID=3785

mircozorzo · Sep 14, 2008

Vermonter73 said:
I'm thinking of putting together a bike light using a Malkoff M60F and a 9.0V LiFePO4 battery pack. Do I need to worry about draining the batteries too far?

Hi, the question is good, if I'm not wrong the discharge limit is 2 Volt and the XR-E 7090 does not work below, so it is not possible to over discharge the Lifepo.

Bye, Mirco

Der Wichtel · Sep 14, 2008

does the batteryback has an internal balancer?

Otherwise the voltage of each cell will drift and the cells can be overcharged.

jirik_cz · Sep 14, 2008

mircozorzo said:
Hi, the question is good, if I'm not wrong the discharge limit is 2 Volt and the XR-E 7090 does not work below, so it is not possible to over discharge the Lifepo.

Bye, Mirco

Discharge limit for the whole pack will be 6 volts so there is a danger of overdischarge.

mircozorzo · Sep 14, 2008

jirik_cz said:
Discharge limit for the whole pack will be 6 volts so there is a danger of overdischarge.

Excuse me, you are right and I'm wrong because I'm thinking at only 1 cell of 3.6 V nominal.

Thanks, Mirco

P.S.: As first post it's great!:sick2:

LiFePO4 low-voltage cutoff, needed?

Vermonter73

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jirik_cz

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