Batt make a difference?

POLSKAPAT · February 26th, 2007, 18:01

With my TM MP5, it currently has a 8.4V Mini and shots at 230 fps.
Someone told me that if I were to put a Large battery then my Mp5 would shot close to 270 fps. He knows that because, that's what he did with his MP5.

I was wondering if this could be true?

Also, instead of a Large, would my FPS as well go higher if I put a Stick 8.4V batt?

The Saint · February 26th, 2007, 18:06

That someone is crazy. Battery has absolutely no impact on fps. The piston is pulled back and released at the same point every shot, like turning a door knob and letting it go. It's not like extra juice to the motor makes them go "Frack yeah!" and throw the gears into reverse to push the piston forward.

Hedonism Bot · February 26th, 2007, 18:08

My mp5J runs off of a mini 8.4 volt 600mah battery and was chrono'd at the last splatter's game @ 280fps.

maybe you're losing compression somewhere.

Murdoch · February 26th, 2007, 18:22

From my experience, a higher voltage battery will increase your RoF due to more electrical pressure acting on the motor (also decreasing the motor life the higher voltage you go). Using a battery with a higher mAH rating should only improve the length of time that the battery can provide current to the motor (milliamperes per hour). My mini batteries all deliver 8.4 volts (1.2v * 7cells) but at different mAH ratings (NiCd 600mAH, NiMH 1400mAH). But I also have a couple of Large batteries again with 8.4v but they provide 2400mAH and 3600mAH each.
The stick battery is similar to the J-type in that it will give you your 8.4v but in a shape that will fit into a specific aeg body. The amphour ratings will be similar to conventional bettery types.
Now despite all this, my buddy who has been into airsoft a lot longer than I have, swears that using a larger mAH battery will up your RoF quite a bit. I haven't done any tests to support this.. but what do I know, I'm just an apprentice electrician..

Greylocks · February 26th, 2007, 18:33

Higher ROF does not change the FPS rating.

Murdoch · February 26th, 2007, 18:40

Quote:

Originally Posted by Greylocks

Higher ROF does not change the FPS rating.

Quite true; I guess I should have answered his initial question about FPS instead of talking about what battery size would effect: RoF and longevity.

Renegade) · February 26th, 2007, 18:49

Ya, they are all right, doesnt touch your FPS, just ROF and smoother shots. Ive noticed with my M4 smaller battery will turn it over, but has a slight struggle, where plug in a 3000mah+ C pack and the difference is vast.

Ibby · February 26th, 2007, 20:07

Electricity flows a lot like water. Imagine (in very general terms) your batteries being like different sized hoses. A 3/4 A cell would be like a McDonald's straw. A full A cell would be like a garden hose. A sub C cell would be like a fire hose.
Mah is like the size of whatever is holding the water. 600mah is a beer glass. 1700mah is a pitcher. 3600mah is a keg.
Voltage would represent the force of the water coming out of the hose. 7.2 volts means the water has been turned on, but not much. 8.4, the water's coming out fine. 9.6, the tap is all the way on.
How this relates to your AEG electrically? Voltage increases your rate of fire. 7.2 volts, you're firing fine but you're no Rambo. 9.6, your stream of BBs starts resembling a laser. Mah wise, that's how long your battery will last. 600mah will get you enough shots. 3600, you should be packing plenty of extra mags. As for battery size, this would involve how well your gun works when you pull the trigger. 3/4 A cells will get power to your motor, but it won't be worthy of a huge laydown on the trigger, or lots of short bursts very fast. Sub C's will power up your SAW just fine.
Any of these batteries (in general) will run your AEG fine, but you'll likely need to try a few to tailor your gun to suit your play style.

ThunderCactus · February 26th, 2007, 20:16

not much to add, good analogy ibby
more Mah = more FPS
more voltage = more FPS
the piston moves backwards faster but the spring doesnt push the piston any harder

Kid · February 26th, 2007, 20:18

Quote:

Originally Posted by ThunderCactus

not much to add, good analogy ibby
more Mah = more FPS
more voltage = more FPS
the piston moves backwards faster but the spring doesnt push the piston any harder

ROF (Rate of fire) not FPS (Feet per second)

Greylocks · February 26th, 2007, 20:29

More MAH = Power for longer periods.
More Voltage = Higher Rate of Fire.

This is discussed to death on the forums. Please read some more.

POLSKAPAT · February 26th, 2007, 20:51

Thanks for all your help guys, I've learnt alot!

Kos-Mos · February 26th, 2007, 21:39

...

For all battery questions please refer to the BATTERY FAQ.

Everything is in there.

This is why I wrote it. So you will have even less search to do.

Ibby · February 26th, 2007, 23:57

Quote:

Originally Posted by ThunderCactus

not much to add, good analogy ibby

It comes naturally. I deal with rad ops all day

When it gets really bad I break out the crayons

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February 26th, 2007, 18:01	#1
POLSKAPAT Trader rating Join Date: Mar 2006 Location: Vaudreuil-Dorion, QC	Batt make a difference? With my TM MP5, it currently has a 8.4V Mini and shots at 230 fps. Someone told me that if I were to put a Large battery then my Mp5 would shot close to 270 fps. He knows that because, that's what he did with his MP5. I was wondering if this could be true? Also, instead of a Large, would my FPS as well go higher if I put a Stick 8.4V batt? __________________

February 26th, 2007, 18:06	#2
The Saint Trader rating Join Date: Jan 2005 Location: Quebec	That someone is crazy. Battery has absolutely no impact on fps. The piston is pulled back and released at the same point every shot, like turning a door knob and letting it go. It's not like extra juice to the motor makes them go "Frack yeah!" and throw the gears into reverse to push the piston forward. __________________ "The Bird of Hermes is My Name, Eating My Wings to Make Me Tame."

February 26th, 2007, 18:22	#4
Murdoch Trader rating Join Date: May 2006 Location: Scarborough, Ont.	From my experience, a higher voltage battery will increase your RoF due to more electrical pressure acting on the motor (also decreasing the motor life the higher voltage you go). Using a battery with a higher mAH rating should only improve the length of time that the battery can provide current to the motor (milliamperes per hour). My mini batteries all deliver 8.4 volts (1.2v * 7cells) but at different mAH ratings (NiCd 600mAH, NiMH 1400mAH). But I also have a couple of Large batteries again with 8.4v but they provide 2400mAH and 3600mAH each. The stick battery is similar to the J-type in that it will give you your 8.4v but in a shape that will fit into a specific aeg body. The amphour ratings will be similar to conventional bettery types. Now despite all this, my buddy who has been into airsoft a lot longer than I have, swears that using a larger mAH battery will up your RoF quite a bit. I haven't done any tests to support this.. but what do I know, I'm just an apprentice electrician.. Last edited by Murdoch; February 26th, 2007 at 18:25.. Reason: vocab and punctuation :P

February 26th, 2007, 18:08	#3
Hedonism Bot Trader rating Join Date: Feb 2005 Location: Ontario	My mp5J runs off of a mini 8.4 volt 600mah battery and was chrono'd at the last splatter's game @ 280fps. maybe you're losing compression somewhere.

February 26th, 2007, 18:33	#5
Greylocks Trader rating Join Date: Dec 2001 Location: Gatineau, Quebec (Near Ottawa)	Higher ROF does not change the FPS rating.

February 26th, 2007, 18:49	#7
Renegade) A Total Bastard Trader rating Join Date: Apr 2006 Location: Tottenham, Ontario	Ya, they are all right, doesnt touch your FPS, just ROF and smoother shots. Ive noticed with my M4 smaller battery will turn it over, but has a slight struggle, where plug in a 3000mah+ C pack and the difference is vast. __________________ W1-5

February 26th, 2007, 20:07	#8
Ibby Trader rating Join Date: Aug 2003 Location: Victoria/Kingston	Electricity flows a lot like water. Imagine (in very general terms) your batteries being like different sized hoses. A 3/4 A cell would be like a McDonald's straw. A full A cell would be like a garden hose. A sub C cell would be like a fire hose. Mah is like the size of whatever is holding the water. 600mah is a beer glass. 1700mah is a pitcher. 3600mah is a keg. Voltage would represent the force of the water coming out of the hose. 7.2 volts means the water has been turned on, but not much. 8.4, the water's coming out fine. 9.6, the tap is all the way on. How this relates to your AEG electrically? Voltage increases your rate of fire. 7.2 volts, you're firing fine but you're no Rambo. 9.6, your stream of BBs starts resembling a laser. Mah wise, that's how long your battery will last. 600mah will get you enough shots. 3600, you should be packing plenty of extra mags. As for battery size, this would involve how well your gun works when you pull the trigger. 3/4 A cells will get power to your motor, but it won't be worthy of a huge laydown on the trigger, or lots of short bursts very fast. Sub C's will power up your SAW just fine. Any of these batteries (in general) will run your AEG fine, but you'll likely need to try a few to tailor your gun to suit your play style. __________________ "Anyone with a name like Amanishourbariki should give a few letters to the poor Ng family." - Snarfangel, Fark.com

February 26th, 2007, 20:16	#9
ThunderCactus Not Eye Safe, Pretty Boy Maximus on the field take his picture! Trader rating Join Date: Feb 2007	not much to add, good analogy ibby more Mah = more FPS more voltage = more FPS the piston moves backwards faster but the spring doesnt push the piston any harder

February 26th, 2007, 20:29	#11
Greylocks Trader rating Join Date: Dec 2001 Location: Gatineau, Quebec (Near Ottawa)	More MAH = Power for longer periods. More Voltage = Higher Rate of Fire. This is discussed to death on the forums. Please read some more.

February 26th, 2007, 20:51	#12
POLSKAPAT Trader rating Join Date: Mar 2006 Location: Vaudreuil-Dorion, QC	Thanks for all your help guys, I've learnt alot! __________________

February 26th, 2007, 21:39	#13
Kos-Mos Trader rating Join Date: Nov 2005 Location: Lévis (QC)	... For all battery questions please refer to the BATTERY FAQ. Everything is in there. This is why I wrote it. So you will have even less search to do.

Batt make a difference?

Airsoft Guns Discussion