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Old 10-13-2017, 08:18 PM   #308 (permalink)
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Originally Posted by oldtamiyaphile View Post
I also wonder what happens if you come at it with a pair of jumper leads
Probably fine depending on the capacity. LiFePO4 has quite a high rated discharge rating. The 20 Ah battery I bought from Batteryspace is rated for 200 Amps (10C) for 10 seconds. Hobby King shows their batteries rated for 30C constant and 40C burst. That's 168 amps from a tiny 4.2 Ah battery. Get the still tiny 8.4 Ah battery and you can jumper something that draws 336 A.

I'd have no problem starting my motorcycle with just the 4.2 Ah LiFePO4 and no capacitor. I've started my 2-stroke jetski for 2 seasons with the 20 Ah pack, sometimes cranking for 30 seconds.
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