auraslip wrote:That being said, I'm not going back to lifepo4. I mean, I have been thinking maybe the high c-rate headways might be good despite being 10lbs heavier, but they're still too damn expensive.
o00scorpion00o wrote:A123's are too expensive.
I have pretty much abused my lipo running a lot in 1p, if I rand them in 2P all the time I would probably get a lot longer out of them. But the 20C Zippy batteries are very over rated and more like 8C but in 2P they are great and don't get hot at all.
I don't care about a 1000 cycle battery that would take me years to make use of, the most important thing for me is weight and compact dimensions and high C, I like to pedal a lot so I need the lightest and most compact battery that will give me the boos I need for cycling or the thrill of full throttle for fun! yeah the bmsbattery NMC stuff is probably the most compact and weighs less than anything else we can get, but the c rate is shit.
If I was commuting then the ping battery or bms battery 20ah packs would probably make the most sense. Or the higher c rate like the A123, but they are very expensive!
Dude... why even mention headways? The 20Ah A123 pouches are pretty much the only LiFe option worth being excited about.
auraslip wrote:Dude... why even mention headways? The 20Ah A123 pouches are pretty much the only LiFe option worth being excited about.
PITA to terminate. Questionable QC. The high c-rate headways are supposedly on par with a123.
cwah wrote:Could you just test at 5C from 4.15 to 3.3V? I'm trying to see what's the maximum capacity I can get from lipo.
I'd use them for daily commuting, no need to pump super high C. Thanks for that
cwah wrote:Few data from Battery University:
http://batteryuniversity.com/learn/arti ... hemistries
Lithium Cobalt Oxide (LiCoO2):
Lithium Manganese Oxide (LiMn2O4):
Lithium Iron Phosphate (LiFePO4):
Lithium Nickel Manganese Cobalt Oxide (LiNiMnCoO2):
Lithium Nickel Cobalt Aluminum Oxide (LiNiCoAlO2):
Lithium Titanate (Li4Ti5O12):
Not sure to which one of these charts belongs the lipo, but you can see clearly that NMC lifespan is shorter than Lifepo4 although higher than LiMn2O4.
auraslip wrote:Battery university is always behind the curve. Don't trust anything they post. Lipo would be li-co.
cwah wrote: the new zippy compact
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