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Fixit



Joined: 22 Nov 2012
Posts: 161
Fixit
I bought a Hampton Bay Solar light in order to modify it to use as a battery charger in order to be more "Green Friendly" and to use it to charge other batteries.

It uses 2 lithium phosphate batteries rated at 3.2 volts 1000 Mah that powered the light.

Battery voltage started at 1.3 volts and rose to 3.41 volts after about 36 hours of sun exposure.

The product info said that it would last for 6 hours at full current.

I used it for 1 hour and the voltage dropped to to .7 volts.

Is that typical ?

Is it because of poor quality batteries ?

Mucho gracious,
Andy
Post 09 May 2014, 03:05
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revolution
When all else fails, read the source


Joined: 24 Aug 2004
Posts: 17279
Location: In your JS exploiting you and your system
revolution
Do you mean lithium iron phosphate?

Anyhow, yes, your batteries are not good. If they have been left in a state of low charge for an extended time then they will suffer internal damage. 0.7 volts is far too low. Anything under ~2.0V per cell can cause damage.

The cause could be many things. Spending too much time on the shelf before sale. Poor quality during manufacture. Not charging during assembly prior to shipment. High temperature storage or transport conditions. etc.
Post 09 May 2014, 03:14
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