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Unread 01-10-2014, 12:57
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Mk.32 Mk.32 is offline
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AKA: Mark
FRC #2485 (W.A.R. Lords)
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Re: Which Battery to Buy?

Quote:
Originally Posted by AdamHeard View Post
Tangentially related, I can't wait for the price of LiFePO4 batteries to drop a tad more and then we can skip this lead nonsense completely

For comparison, the batteries we use are really only 3-6 AH in the FRC context (their apparent capacity is reduced as a function of current draw. This is demonstrated on most manufacturers spec sheets).

The only advantage of lead currently is it's peak current capacity is pretty high compared to it's actual capacity (it's C rating) per dollar.

We'd need to use a LiFePO4 pack larger than 6 AH just to get the peak current we'd need. That's not a huge issue though, it'd let teams run the same battery for multiple matches. Teams like ours would drop from 12 batteries to 3-4, which at current prices makes them cost essentially the same.

We'd also be replacing them less often annually. I think with that they'd actually SAVE money at this point already.
Learned my lesson with assumptions

But I agree with this 1000%. Cannot wait to get to lithium, hell even NiMH would be better.....

I may have rigged a LiPo Pack (do not do this...) for my team's FRC bot in the past for in lab testing uses only and man that was heavenly.....
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