liveforphysics wrote:IMHO- It seems like another of the many companies that buy the "does-not-meet-standards-for-b-stock" cells made by HobbyKing
flathill wrote:liveforphysics wrote:IMHO- It seems like another of the many companies that buy the "does-not-meet-standards-for-b-stock" cells made by HobbyKing
Hobbyking makes their own cell? I could see them assembling packs but i didnt know they had a cell factory...
flathill wrote:So wanba and haIyin/herewin are hobbyking? Have you heard of Ienergy? Batteryspace sells the high energy version of this LiNiCoMn this "high power" cell: http://www.ienergy.com.cn/products.asp? ... ail&ID=129
neptronix wrote:I just need to find out a way to rapidly cycle it. Can the iCharger line do the 'cycle' function with regenerative discharge?
...i'm not looking at the 10C lipo. I'm looking at the 3-5C li-Mn packs due to it's lower weight!
I would never mess with that 10C lipo. As LFP said, it is most likely reject, 1st gen, or just low quality stuff. It might be OK, but it's a crapshoot..
neptronix wrote:flathill: i see what you're talking about. But those cells are not impressive given their weight.
50g x 5 = 250g; that's 10ah of 1S, right?
250g x 10 = 2500g; that's a 10S 10AH pack, so 36 volts essentially.
2500g = 5.5lbs
Let's compare a 20C zippy lipo pack.
Each 5S 5AH pack is 640g, and we need 4 of those.
640g x 4 = 2560g
2560g = 5.6lbs.
neptronix wrote:The transmetic Li-Mn i've been drooling over would make for a 1920g 10S 10AH pack, that's 1920g or 4.2lbs of cell weight.
neptronix wrote:OK. I got an email back from leadershobby.
They are apparently 0.1C charge, 3-5C discharge Li-Mn.
I have a super super hard time believing that they can only take a 0.1C charge. That's 10 hours. Not even the crappiest of all laptop cells has a charge rate THAT low. Am asking for a spec sheet.
Li-Mn is good stuff though. Usually 500-700 cycles to 80%, and it is said by many that this formulation is self-balancing.. same stuff as the konions/bionx pack.
I'll wait for a spec sheet. If the 0.1C charge figure is misquoted, it's on. If it's correct, i will order one sample pack and abuse the piss out of it liveforphysics style to see what it can really handle and how safe it is..
neptronix wrote:I don't think LiMn is capable of outputting 20C. I believe that involves cobalt being involved.
I have never heard of a 20C RC Lipo battery being this light. Not even the very expensive stuff.
I do wonder if there is a typo there. But yes, you are correct. It seems to be a higher wHr/KG than all the other lipo, including the yellow/gold label 'bullistorm' stuff.
I can't find a 5S version for a direct comparison, so let's do the math.
340g / 4S = 85g per cell.
85g x 5 = 425g per 5S pack.
5s 5AH would then be 425g per cell, versus the typical RC lipo weight of 640-655g for 20C 5S 5AH.
5S 5AH x 2 = 850g for 10AH.
That would be notably lighter than the li-Mn stuff i am drooling over.
The official bullistorm page doesn't seem to list any 20C batteries.
Something does smell fishy here, you wanna be the guinea pig on this one?
neptronix wrote:Something does smell fishy here, you wanna be the guinea pig on this one?
liveforphysics wrote:With just applying a sticker, you can call a 4Ah 20C cell a 5Ah cell 30C cell.
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