Mystery 11.1V 2100mAh 20C Rechargeable Lithium Polymer Battery for R/C Helicopters

Pros: Great Price, Looks, Feels, Performs like big brand name packs without the big name price!
Comes with balance and Deans Ultra Connector attached.

Cons: No heat spacers between cells.
Nothing more so far.

Other: The bottom line is that these packs are well worth the money. I'm only into my first 5 chargers, I'll post a long term review after 20-30 more cycles.

Pros: I bought this product for my CopterX 450AE V2. I have already used 20 times. the performance of the battery is really satisfactory. I got clear 7 minutes flying time. So I ordered another one.

Cons: When using this battery I advice that one should not use up the battery below 3.5 V, by that you really expand the battery life significantly. Also there must be at least 30 minutes between the subsequent charges.

Other: I recommend this battery with no hesitation because the price is very reasonable when you consider its sufficient performance.

Pros: I have had this battery for a couple of months now and have had no issues with it. It has lasted longer than my Align battery pack. Check out helifreak for a full review - search for Lipo batteries too cheap? I have an Eagle Tree eLogger connected to my Trex, and the battery temp remained 2 degrees cooler than my Flight Power battery. After many flights - no puffy no softness in any cells. Is quite punchy and handled everything I threw at it. running the stock 430xl motor and ESC

Cons: none that I can see as yet.

Other: A cheap battery for RC helicopters/boats/planes. Always take care when charging lipo batteries.

Pros: These batteries have great power and long life.

Cons: I have found no negatives with this battery

Other: Unbeatable value.One thing that I would like to add is that I have discharged these packs over 100% many times, but never below 9.5 V. In the beginning many times I put as much as 2350mah back into my Mystery packs with my thunder power charger. And that never puffed and they barely even became warm. That was in the beginning and now I only discharged them down to about 70 to 80% and they still are going pretty strong with 9-10min. of flight.

Pros: once again, like any other mystery brand battery, this one ranks as the cheapest i have found anywhere. it fits right into the belt cp and trex compartments perfectly. the original batteries we were running were 1800mA and the helis' ran tail heavy. this battery has more weight to make the COG perfect. i have ran mystery batteries on my planes also and they do last a while. with today's economy, i really dont consider powering any of my rc stuff with more expensive batteries unless i am professionally competing of course. but i fly for fun and these batteries power that fun.

Cons: i really dont have anything negative to say about these batteries except that my friend and i bought a total of four of them and i was hoping to get some kind of referral Dx points for 3 of them that he purchased

Other: i would definately purchase these again. kudos to dXtreme for carrying a line of reliable and very affordable products like this to power my rc toys. there is nothing more annoying and frustrating that equipment failing and causing you to crash. i have total faith that this battery will not ruin your day. its just as reliable as the other mystery batteries i have been using for over a year now

Pros: I currently use these on my Trex 450S and they have been performing very well. They seem to have a good punch to them and I have about 12 cycles on each battery and they still seem pretty strong. The build quality is good, they have a piece of foam at the bottom for those crashes and they have a dean's connector already installed which is nice.

Cons: I have about 12 cycles on each battery. I bought 3 and all of them are working ok so far. I'm hoping to get at least 80 cycles off of them and they would be totally worth it. I'm currently having balancing issues with the lipos but I think it's my charger that sucks.

Other: Buy 1 and try 1 and let us know how it worked for you! If you get over 80 cycles on them let me know!

Pros: Battery has handled multiple cycles with no issue.
Price is much less then what it would be to purchase locally.
I was able to fit it sideways into my RC18R giving it super human power. Thing flips over at full throttle due to all the power.

Cons: Make sure you have something to balance the cells.
LiPo can be dangerous, especially in tiny cars hitting 60mph.
Had to buy Deans plugs for my car.

Other: Great quality battery that has dealt many times with being dragged behind the vehicle. Writing this review before I go ahead and buy another 2.

Pros: I use this in my E flite blade 400 3d helicopter. I use a voltage monitor and it takes about 9 minutes to get down to 3.7 volts per cell, so MAH rating appears reasonably accurate.
Well constructed, albeit a little heavier than the 1800mAh E flite packs...4 or 5 clicks of trim settles that.

Cons: I cannot attest to the durability, but would be suprised if they did not go the distance on my early experience.
Had to remove the Deans plugs to put on female E flite ones, but quite easy if you can solder.

Other: I have not seen cheaper anywhere.

Pros: GREAT BATTERY on cycle 40 since i bought them 1 and half ago i get 13 min of flight time on my belt cp v2 and 10 min on my t-rex clone with align power setup

Cons: nothing really wished the battery shell was stronger starting to wear out but i guess thats normal for all batteries

Other: ive seen cheaper batteries with same specs but them felt cheap compaired to these......................................................................................

Pros: The battery is housed in the nice orange shrink wrap, which is then filled in with some kind of rubber, most expensive batteries don't even have this good build, I guess it adds a little weight though. The deans connectors were soldered well (even though I replace them with EC3)l, another sign of quality. The batteries fit snugly in my blade 400 (just) with no modification.

Cons: Label has spelling errors. Australian customs opened the package because everyone is concerned about LiPo batteries now.

Other: Great buy, get yours before we cannot ship any more