A123 Systems Li-Ion, CBA+10X Amp. Graphs - Page 5 - RC Groups
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Sep 07, 2006, 08:57 PM
Registered User
I have just the one cell, which MaxAmps sent me. I haven't counted the cycles but there are a few more than the ones posted - some partial cycles - false starts, conditioning, etc.

- RD
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Sep 08, 2006, 05:54 AM
Tony Rogers
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This post follows on from another earlier post here about the burst potential of a123 cells.

Thanks for your work RD. The results look quite interesting. The 30C bursts, at least for the first half of the discharge, hold a higher voltage than the 26C continuous plot at 3.3 to 3.4 volts. So, using my example from a few posts earlier, a 30C, 5 second burst from a 6s pack would give 66 * 2.3 * 6 = 910 watts. That is a little better than my earlier guess.

At 40C we are getting 88 * 1.9 * 6 = 1003 watts.
Sep 08, 2006, 08:52 AM
Registered User
You're welcome, Tony.

Another way to look at it: The duty cycles graphs indicate the cell holds its wattage output substantially constant for ten and eight minutes, respectively. As with the constant current graphs, its output doesn't sag toward the end of its discharge.

But to me, the most impressive characteristic of the A133 is its foolproof nature. It's about as safe and trouble-free as I can imagine. Hard-shelled, so crash resistant to boot.

- RD

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