Tenergy 8.4v 1600mAh Flat NiMH Airsoft Battery Pack

Keeps a charge a long time.

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Buy a bunch of these,, they work real good.

Good power source for my son's H&K KWA G36C AEG, 2nd Generation and seems to last quite a while.

The only annoying thing in my son's particular gun is that the lengthy batter wires require a somewhat difficult routing in the gun's batter compartment. This makes it challenging and time consuming to replace batteries in the gun. I wish it had a short batter wire - at least for my son's specific application.

Once charged it holds the charge for a good long time.

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Do not charge for more than 5 hours.

much better than the one that came with the gun.

price?

good power and easy on gear boxes.

Fits easily in the handguard of my KWA KM4-CQB carbine leaving room for a "monster" 3-round burst module. Battery has very long life and has been thru about 3000 rounds with no recharge needed. This battery provides a fairly realistic 950 rpm cyclic rate. If you want super cyclic rates you'll need more voltage.

Nothing.

Note the cyclic rate in my AEG carbine. If you want "stupid fast" you'll want a bigger battery, perhaps a LIPO.

Charged at 1 amp with my delta peak charger it peaked nicely (1.5 hours or so, wasnt timing!) and battery was barely warm to the touch. Have put more than 2500 rounds through my TM G3 SAS over a three week period with no sign (yet) of running down. Awsome!

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I first bought this same battery (intellect 1600 cells 8.4V) in Japan at Eichigoya in Tokyo except it was the Japanese version (the lead to battery attachment is not as robust nor as strain releived as on the Ameican version) for 39USDand it is awsome. I was very happy to find it here (at Pyramid) for less and with a better lead mount and it charges and runs as good if not better.

when i got the battey i thought i would have to charge it , nope it stayed in the gun almost 3 wks. finely i put it on discharge , with light bulbs

not a thing, its great

Works great in my TM P90TR! Lasts a long time and holds its charge for days.

There really isn't anything bad to say...

These types of batteries are kinda small for a P90's battery housing, but that is due to the fact that it is a standard size battery that can fit in any gun that uses this mini type. It tends to kick around inside causing a little noise when operating the gun, but is easily fixed by putting the battery in a small sock. It causes no harm to the battery by doing this, just make sure you remove the sock when charging! NiMH batteries get a little warm when quick charging and insulating it with anything can cause damage to the cells.