Matrix High Performance 7.4V Stick Type Airsoft LiPo Battery (Model: 1200mAh / 20C / Long / Small Tamiya & Long Wire)

"If you know anything about HK MP5k's you know that the battery compartment is extremely small and there are VERY little battery options for these guns because of the space above the gearbox. And if you want to go lipo that was pretty much out of the question until now! I searched for months looking for a lipo battery that would fit and the only one I found was overseas and I did not want to order it and have it not fit. So I kept looking and found this battery on Evike and it looked good and because of the one review which really did not give me much hope as it did not say what brand of Mp5K it was.

Well anyway, I ordered this battery for my JG HK Mp5k and was hoping it would fit. Well, I can tell you beyond a shadow of a doubt this battery will fit ANY brand HK Mp5k out there, this battery is so thin and small it actually rattles in the space above the gearbox. To give you an idea how thick and thin it is stack two #2 pencils on top of each other and you will see how thick and tall it is as it is exact thickness of two #2 pencils.

This is the only lipo battery you can get in the whole US for a Mp5k that I know of. So if you have an MP5K and want a lipo battery for it go ahead and order this and you will be good to go!!!

So for you Mp5K gun owners you have found your lipo battery!!!

Thanx,
Ninja

"With a gearbox-contained MOSFET I was able to fit this inside a Jing Gong LE M4 collapsible stock without the battery protruding into my shoulder at all. It sits perfectly flush, but only because I replaced the mini-tamiya with 2mm bullet connectors that fit along side the battery inside the tube very snug. A new style G&G stock will fit batteries like this perfectly without any modification, specifically the G&G Firehawk as confirmed by my testing.

"This Lipo is small, it fits perfectly on my DBoy RK-08 AK105 Carbine AEG top receiver and there's still more space on it. Very satisfied a must buy and recommend for AK AEG.

"Woow! I cannot believe how tiny is this, it really fit into my DBoy RK-08 AK105 Carbine AEG easily and there's still space in the top receiver. Awesome purchase! I'm gonna buy more of this soon. A must recommended Lipo for AK platform. Thanks Evike!

"this battery is amazing i used it for 12 hours in my ak47-u and it didn't even drain a quarter if the battery after what was 1000 rounds of use this battery is high quality, and i definitely recommend it.

"Bought this for my FN licensed p90 and it runs great especially for full auto. Nice and small in size will definitely buy more of these in the future.

"This battery performs as expected for a 7.4v LIPO. But a big positive vs other 1500mah (or even 1200mah) is the small size. I was able to fit this in the bottom part of the stock that is usually reserved for round butterfly batteries. (APEX m4 stock). Why do I care? The rear wiring in my buffer tube wouldn't let me place the battery there without extending the stock out. But I could place this battery in the lower area with the stock fully retracted. This is a good option for anyone trying to keep the stock retracted as much as possible.

"So far a great battery.
I am running it in an E&L AK74 . Mah says 1600 but i have ran mine for at least 2000 shots on one charge and it didn't show any signs of stopping..
Fits good in AK upper receiver, it wont go into my gas tube, but there is enough room for it to fit on end under the cover and be nice and snug.
Very happy with so far.

"Love these little guys, one can provide all day play in my MP5k as a sidearm to my sniper, or I can use both for all day play if I fancy wasting some ammo! They also fit snugly into a CYMA MP5k.

"WOW !! this thing is just a beast , really im not kidding it is so fast it gave me a 19 rounds per second and 1000 rounds a minute noo joke

"I have had no problem with mine.

A lipo operates best if you don't drain it further after voltage starts dropping. The best way to monitor this is by attaching a lipo alarm. Otherwise, most AEG, especially when you are using a 11.1V, when voltage starts to drop, your gun will still fire fine from 11.1V down to 8 votes or so, while your battery is already starting to go bad at 10V or so.

Most players aren't educated on how to properly use a lipo and so I hope these info helps.

"Bought two one dosent hold charge well but that could be my fault other then that works great

"MODEL: 1200MAH / 20C / LONG / DEANS

Battery is so long and thin that it'll definitely fit in the dust cover of any AK model. In fact, it's so long and thin that it may reach towards the gas block. This may pose a challenge to MP5k users especially if the connecting wire runs long like on the CYMA Platinum models.

Depending on your shooting habits and how efficient your gearbox performs, you may need an extra to last you a whole day's worth of games. It's wise to have an extra anyway if you chance upon a failure or a friend forgot theirs.

Average measurements measure across the length of the battery (about 190+mm)
14.8mm x 9.3mm

"So the battery works great. It's not the same picture here shown. Infact its the matrix 7.4 1000mah 15c that I got. Nothing on it says 30c, and they sell it already on here. I would return and complain but I need the battery and it does technically do what I need it to do, just wish they're data was more on point. All in all I'll give it a 4/5 since it wasn't a perfect order, but good enough that I'm happy