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Old September 28th 12, 12:54 AM posted to rec.aviation.soaring
Papa3[_2_]
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Default LiFePO4 batteries

On Thursday, September 27, 2012 11:21:06 AM UTC-4, Evan Ludeman wrote:
On Sep 27, 10:53*am, wrote:


The RC model battery / fire starters are lithium polymer (LiPO). The

tenergy and K2 SLA replacement batteries are lithium iron phosphate

(LiFePO4). I saw a lot of the K2 batteries at my last contest, heard

only praise. I'm thinking of switching to the LiFePO4 batteries but

I'm in need of evidence that they'll work at typical glider discharge

rates (2A during TX, about 1A otherwise) when really cold (say -30

C). Any of you Sierra Wave guys using these?


Been using mine all year including early season, longish ridge missions on cold (though not bitterly cold) days. My load is pretty typical of a modern panel, with radio, xponder, vario, backup FR, and ClearNav. So far, the LiFePO4 batteries from K2 have performed flawlessy. I ran a discharge test on them under load on the bench earlier this year, and they met or exceeded the performance chart I had.

P3