View Full Version : battery for M4?

silent assassin
01-11-2005, 08:43 PM
ok i am looking at 2 battery options for my upgraded M4 one is this battery http://www.onlybatterypacks.com/showitem.asp?ItemID=10266.11 and the other is this http://www.airsoftarms.com/viewproductdetail.php?ProdID=5784 and i am wondering if any of these will fit in the foregrip and work normally?

01-11-2005, 09:34 PM
Try reading this: http://www.austinairsoft.com/forums/showthread.php?t=4200

silent assassin
01-11-2005, 09:36 PM
yeah i did and it said nothing about these batteries so thats why i am wondering../

01-11-2005, 09:54 PM
since your guns upgraded I would go with a 9.6 to keep the ROF comparable..... any of those packs will work though. I tend to stay away from NiMH and stick to nicads personally.

silent assassin
01-11-2005, 11:03 PM
someone told me not to get a 9.6 but i can't remember why. So could u send me a link of the 9.6 battery that would fit in the forgrip?

01-12-2005, 12:07 AM
someone told me not to get a 9.6 but i can't remember why. So could u send me a link of the 9.6 battery that would fit in the forgrip?
Using a 9.6v in a stock gun leads to a quicker time to failure, meaning that parts will break sooner. However, since you are using an upgraded gun, it should hold out better, to which extent we can't help without knowing what parts are in the weapon.

silent assassin
01-12-2005, 07:56 AM
all i've done to the gun is use area 1000 bushings and a m120 spring. those are the only parts i have added to my M4. but i don't know what other parts are in it.

01-12-2005, 09:28 AM
It'll be fine for the time being. Just be aware that you'll eat through parts more quickly with a 9.6v than a 8.4v in the config you listed.

silent assassin
01-12-2005, 05:26 PM
i think i need to go with the 8.4 because i need it to fit in the foregrip.

01-12-2005, 11:24 PM
http://www.lonestarairsoft.com/forums/showthread.php?t=4200 ----that might help a little.

01-18-2005, 01:39 AM
In my experience with 'mini' sized cells (2/3A or A is the actual designation), there are a few rules of thumb:
1. 8.4v is weak...your ROF will be very slow, probably in the 600rpm range, compared w/ closer to 800rpm stock. This could cause the piston to lock all the way back.
2. 9.6v + small batts + NiCD = ok on bushings + M120. Expect it to last around a year or regular play, I've had three guys using the exact same setup go well over that, none lasted any longer/shorter than comparable guns running 8.4v fullsize batts.
3. NiMH + fullsize (Sub-C cells) batts = ok; ANY NiMH + mini (2/3A or A) sized cells = BAD. The 2100mah mini packs are _not_ ok for upgrades. They will not last long at all, and worst of all, you will find the gun jamming/piston getting locked all the way back.

All that said, I would definitely recommend the V-batt style setup if you insist on maintaining the stock wiring/foregrip batt. Relatively easy to get in there, and way easier to get closed than the 'Nunchuck' style.
As I understand it, the nunchuck style is more of a requirement w/ the M733's (although I've never put one in there, that foregrip is significantly smaller than the M4A1, so this makes sense).

01-18-2005, 08:08 AM
Where are you getting your cells?

01-18-2005, 06:48 PM
The A sized cells (V batts/nunchuck sized) have all been from OnlyBatteryPacks.com. As I remember it, those have been Sanyo KR1700AU NiCD 9.6v packs. Definitely too high of internal resistance to dump a lot of current, thus they don't push the gun nearly as hard as crap 3000mah 8.4v packs in most cases.
The NiMH that I've seen tried in A sized were Sanyo HR2700AUX A cells as I remember it (I think I said 2100 in the previous post). I noticed they are making them with the KAN 1800 high output 4/5A cells now...those may work better.
Looks like he's updated the page there lately to show discharge ratings and recommendations for stock vs mod guns...cool.

For my fullsize packs, we all buy the junk 'Powerizer' 3000mah packs off eBay. No idea what kind of cells, but as long as you charge them conservatively (~3amps) they last forever, and are hard to get a better bang for the buck.

silent assassin
01-18-2005, 06:52 PM
i'm buying from onlybatterypacks so will this work and fit?

01-18-2005, 07:27 PM
The A sized cells (V batts/nunchuck sized) have all been from OnlyBatteryPacks.com Yeah, that would explain it.

Something didn't ring right in your post since I've seen plenty of people powering upgraded guns with small cell-based packs.

Sounds like you've already noticed, but better said by a guy that makes custom packs:

Well I read through the post & looks like this guy is obviously using a mini cell that is not a high output cell. I have had a few customers using at that time the 1100mah cells & they have no problem with run time or ROF. Now I even have the 1150mah which is alot better than the 1100's. This cell can at least take 10-20amps of discharge rate, so ROF will not be an issue. I have not had any problems of my piston locking due to a 8.4volt mini pack. As for the 2100mah A sized cell, I myself am using a 2100mah 10.8volt pack on my M4 & it shoots at 445fps & I have no problem with ROF or run time. That's a high output Nimh & I last all day & then some. So overall he must be using those crappy high internal resistance packs which will yield the results that he is talking about. If you get the right cells for the right application you will have no problems at all. Hope this helps.

silent assassin
01-18-2005, 07:31 PM
so are u saying that http://www.onlybatterypacks.com/showitem.asp?ItemID=10090.11%20? will work or not? because i don't know about all of the tech issues.

01-18-2005, 07:35 PM
Sorry silent, I wasn't replying directly to you, but yes, that pack should work for you assuming your upgrades aren't excessive. I think you mentioned you were had a M120 spring?

silent assassin
01-18-2005, 08:17 PM
yes i do and thanks for all of your help. and i guess that means i'm buying it tonight.

silent assassin
01-22-2005, 12:47 PM
one more question, will i have to buy a certain connector for the battery if i buy it from onlybatterypacks.com?

01-22-2005, 01:12 PM
I would contact them and make sure they install the connector you want on it. Otherwise, it will likely come with a regular or small Tamiya-style connector which are the regular ones used on Airsoft guns. It being regular or small depends on the size of the pack. One of the members who has bought from them would know.

silent assassin
01-22-2005, 01:23 PM
do you have anyone that i could ask about that besides the company? if you don't i will just ask them.

silent assassin
01-22-2005, 02:03 PM
oh and does batteries plus carry airsoft batteries? because there is a one of those stores near by me

01-22-2005, 02:35 PM
The battery-plus store by me makes them on the spot. All you have to do is tell them the type(nicad,nimh/large, small), voltage and configuration and they should have a price for ya.

silent assassin
01-22-2005, 02:38 PM
ok and can they make it in a short amount of time? or how long will it take them to make?

01-22-2005, 03:04 PM
ok and can they make it in a short amount of time? or how long will it take them to make?
Why don't you try calling them and asking? It depends on their work load and what you want done.

silent assassin
01-22-2005, 03:22 PM
well i would but i decided that i should just buy from onlybatterypacks because the have the battery i need and i don't want to try and get a custum one and have it not fit right.

01-22-2005, 03:35 PM
Cool, glad that this thread served its' purpose.