xm8 battery
 

well im going to try and fit a larger battery in my xm8, i got room above the barrel assy and under the barrel assy to fit 9.6v mini, idealistically id love to get a 9.6v 3600 large in there, but as it stands in its brick form, it wont fit. the large battery is too wide to fit in the forstock w/o sitting cockeyed, and is too long to sit above.

my question is, anybody w/ a degree in the "fitting a battery in a small place knowledge 101" have any ideas or recomendations?

Here's the obvious - sell the gun and buy something that fits a large battery.

if you have space above and space below just take two 9.6 volt minis and connect them in parallel. their what, like 1100mA, that would give you 2200mA to play with.

*EDIT: Just checked, 9.6 v minis are 600mA, that gives you a total of 1200mA to work with. That or go external?

Solution: Battery Sling
http://www.wgcshop.com/WGC_Shop/images/sat_cg_3pbsb.jpg

HEY! THERES A GREAT IDEA! why didnt i think of that? oh, is that what you say to everyone with an m4? cmon scru all joking aside, im asking for input from people in "large batteries in small places", not smartassology. (i didnt mean that offensivly either scru)

that battery sling isnt a bad idea, i didnt even know they exsisted, not egsactly what im looking for, but it would be a good plan b if theres no solution.

If you've got room for the equivilant of two minis, you might want to look into butterfly config batteries. For example: http://www.airsoftcanada.com/showthread.php?t=12169

xm8 rocks...

hmm i see, that did cross my mind, but i wasnt sure how well that set up works, what is nunchuck mini equivelant to on a larger battery? if you combined two minis could you get the 3300+mah? do they work as well as a large battery?

are you looking to increase battery size, or ROF?

well both. im planing on upgrading the mech box, so a 9.6v would be a nice addition, and way longer battery life.

are you palnning on upgrading the BE mechbox or swaping out for another one

Ive seen pictures of plenty of people usingbattery bags attached to the stock.. how about that??

oorr, (kg3 youll appreciate this as well), http://socalairsoft.com/modules.php?...owcontent&id=5 1/4 the way down, first paragraph in the "second impressions" area. this is egsactly what i had in mind!

lithium, i wouldnt mind a pic of what you mean.

good stuff! ill be ordering one soon, but im more conscerned over the rail issues. I love this guy, he already told me everything about the Xm8 before i even got it!

attach a rail to the bottom of the handguard, then get a STAR M800 battery carrier and battery, looks like this:

http://www.starairsoft.com/Large/SAA...arrier_2_L.jpg

I hear there's a handsome devil in Toronto that may have one of these in stock.... just saying ya know...

some Xm8's cant have a rail, because they have a weird hatch thing. Some handsome devil in New Brunswick has one...

well since were talking about handsome devils; i know a handsome devil in brooks, who owns an m8 and has a rail on the hand guard. i do have a g36 long rail on the bottom of my hand guard, so grims option a viable, i was hoping to keep everything inside the gun. but its not like im not willing to step outside my boundries.

is the surefire battery thingy actually sable, because then that would be awesome.

Making no assumptions . . .
 

It is possible to put two batteries together in parallel, but if their capacities are different, one will tend to charge the other, resulting in net loss of power.

You could use some diodes to ensure that current only flows out of the battery packs, and then parallel them *after* the diodes. I did this in a ham radio config (I'm VY2CRV, btw) - I have an old Icom IC751, which has its RAM backed up by a lithium cell. Problem is, if you disconnect the existing cell, the RAM goes dead, and the radio is useless until you build a programmer for the thing. Not fun.

Solution? Well, looking at the module with the battery, it became obvious that they were using a diode setup to prevent the lithium battery from receiving charge from the operating circuit when the radio was one (which would kill the lithium cell, if not cause it to overheat.)

Solution? My good friend VY2OX (Lowell) designed a small board with two battery clips on it, each isolated by diodes. Now, when the batteries go dicky (in 20 years, mind you!) I can pop them out one at a time and replace them without the radio going poof.

If the radio lives that long . . .

So . . . you could do the same, with higher current diodes, and then remove the packs for charging, since the diodes would block the charging.

Just an idea.

you lost me a "diodes"

diodes are a solid state component that will only let electron current flow go one way(ie: power only flows out not in, like a check valve) primary example is a wheatstone bridge design used for basic conversion of ac to dc. that being said the one thing your forgeting is that dc power in parrelle is additive and that while you are correct that there would be a slight" charging effect" on the smaller battery the cumlative mah is therfore greater and that "charging" effect is actually the combined battery pack way of achiving ballance. I will however agree that diodes are a fantastic way of isolatiog each battery pack from each other and limiting the negative effects should a cell go wrong on one of the packs. I however feel they are too impractical and also feel that the less juction points you have between the power supply and the motor the better.

thanks captian obvious, you cover that basic mechanics and science class :zzz: :salute: . i was implying that, that would be making something more complicated than it has to be (as you summized in the end of your post swattmedic), if that was really simpler and a better way to go, im sure the JAPANESE companies who design these guns would have implimented it. no offence egon, its just funny to see people new to the scene are always trying to prove their worth by worrying/trying to change things that work just fine, but you grow outta that and start worrying about the practicallity rather the functionality **cough, blair, cough** :)