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Matrix High Output 12V 4500mAh Ni-MH Large Type Battery.

3 Customer Reviews

by Greg I. on 01/08/2015
"Awesome battery... seems to last forever(3 hours of heavy auto firing) and ROF increased dramatically.
I guess the only downfall would be its size.
It's 1.5" w X 1" h X ~8.5" L.
I currently have is inside the stock( Model: Stock-MTX-MK2-WW) of my M249 MKII but it took a bit of doing and it fits like it was made for the stock...snug but not too snug, ...and adds to the overall weight of the already heavy LMG.

You will need to remove the stocks butt plate(the slide cap and metal part) to get the battery in, making sure you have the LMG wires on the down side of the stock when inserting. Push in slowly and firmly so you don't pinch the LMG wires.
Once in put the metal butt plate back will be snug.
There is enough room for all the extra wire and fuse to be tucked in nicely.
I don't even bother removing the battery to recharge it seeing as it easily last all day of heavy usage.
When I do charge it I set the smart charger to the 2 amp setting as its a big battery.
I may buy another for my other M249(yes, I have 2) which has a 10.8v battery (Model: BAT017) in the stock. This battery needs to be installed from the front end of the stock as one cell is sideways... this battery also fits snug.

So if you have an M249 (CA or A&K), these 2 batteries(12v/10.8v) will fit in the stock.
I don't know if they will fit in G&P(or others) M249.
by Wesley F. on 09/04/2014
"This thing is OVERKILL... I put in my KWA M4 (external battery holder) and i swear it shot like 30 RPM's! If you have the money for OVERKILL, please get this. OR if you have a M249/Para... OVERKILL X2!!!!! lol
by Bruce B. on 07/05/2013
"I am overjoyed with this battery! It can compete with a li-po battery. I use it in my ak with a matrix magnum motor and an m130 spring. This combination gives a great trigger response and ROF.


- gives a great ROF
- can power and m130
- lasts a long time