Mystery 7.4V 2800mAh Lithium Polymer Rechargeable Battery for R/C Helicopters

Pros: Battery appears to have the advertized capacity. Handles load very well! I've loaded mine with 25 amps and they didn't drop noticably in voltage. (Only a few mV)

Cons: No deans connector on them so you have to solder it yourself. Be carefull while soldering as the batterys can deliver a very high short-circuit current.

Other: Basically, a great pack if you need some cheap LiPo's. They can take a very high load too.

Pros: That's pretty good battery for its price: - 2400-2500mAh (tested on genue iMax B6 and it's ACM copy; I have 3 of these batteries) - high continuous discharge current ~50A - relatively good burst current ~70-75A - good results at high stress applications (2.36 minutes at ~50A till being fully drained; ~2Ah capacity) - good results at cold weather (~30A continues discharge at 0 C) - good buid quality

Cons: - that's not a 2800mAh battery like advertised - it's not 30C, much closer to 20C - not ready for operation out of the box (soldering connector is required)

Other: Highly recomended for airsoft, medium-power RC models, high-power photo light and flashes.