New RC batteries - Any use on ebikes?

[paultrafalgar]

Are these batteries of use on ebikes?
http://cgi.ebay.com/7.4v-3000mAh-Brust-30C-Li-Poly-Battery-Black-RC-Cars_W0QQitemZ140273507266QQcmdZViewItemQQimsxZ20081008?IMSfp=TL081008112004r6930

 

[silicium]

I see:
* New Product From Our Shop
* This New Type of Battery Got More Power And Long Life Time
* Can Be Charge Over 800 Times
* Prevent Over Use And Over Charge
* 4 x Cylinder Style Cells
* Can Be Use When The Voltage Below Than 3 After Switched Off The "THRESHOLD" Fuction In Your Program Card (IF YOU HAVE) Or Switch The Protection To 2.8V/CELL

Cylinder ??

 

[johnrobholmes]

I seriously doubt they are 30C.


But, if you bought 12 of em your price wouldn't be that bad. Take them out of the case and stack em around, you would have a decently priced 50v 12s2p 6 amp hour pack.


Good eye there, I didn't see cylinder cells. Maybe LiFe double stacked? Sounds fishy for the space, mah, and discharge.

 

[olaf-lampe]

There could be 2s2p 18650 cells in it. The only ones I believe being capable of 30C are the small ones from A123. But they would have less than 7.4V!

Buy one and open it for us
Olaf

 

[julesa]

This one from the same seller is an even better deal, assuming specs are anywhere close to accurate:
http://cgi.ebay.com/EC-Power-7-4v-4...34061QQcmdZViewItemQQ_trksidZp1742.m153.l1262

10C rated 7.4v 4Ah for $10.00 plus $7.50 shipping? I'm having a hard time believing it, and anyway I'd still be concerned about the pack catching fire...

Edited to add:
7.4v is 2 x 3.7v, the nominal per-cell voltage of LiCoO2. I wouldn't want to be sitting on a pack made from that if I wrecked the bike or got a short circuit or something.