CYMA M1a1 Thompsons and batteries

It's also possible to change the connector...

Or order large batteries with mini Tamiya connectors.

Well I do know a 9.6V, 3300mAh pack is too long for the top "bay". An 8.4V, 3300mAh MIGHT fit, though I've not tried it.

I use 8.4v, 1500mAh in mine.

8.4v 2000 MAH in mine, with room to spare.

Not quite sure which one I'm using but I had a 1100 (kit battery) in there first and coulnd't hit anything with it. Now a 1300 and boy does it shoot!

i use an 8.4V 3700MaH in mine.

couldnt be better

my 3700 slightly split the stock apart, however, if you take the stock off, and take it apart, you can file down the runners on the inside to fit batteries in that don't quite fit.

If you use a low capacity battery, and shoot alot, you'll be forever changing your battery.

A 3600/3700 would be plenty for a blat-fest, if you're on ammo limits, it's more than suitable for a 24 hour game etc.

This might be a dumb question, but I was never very good at Physics:
Which aspect of a battery's electrical qualities affect the rate-of-fire?

im guessing its to do with the MaH that goes into the motor, with smaller batteries, the less capacity of charge it can take so they tend to last shorter than that of a larger celled large battery.

ROF is dependent on battery voltage, number of shots fired is dependent on battery capacity.

In my simplistic way I look on it at the battery is a container of a liquid called electricity. The voltage is the force the electricity comes out (and therefore turns the motor more quickly) and the size of the container determines how much liquid the battery holds (a bigger container hold more mA).

Therefore a 12v 1300mAh will turn a motor very quickly for a short period or time.
A 7v 3700 mAh will turn a motor slowly for a long period of time.
A 12v 3700mAh will both turn a motor very fast and last for a long time.

Simples! (well, I am anyway!)

spot on.

unless you talk about li-po batteries.

spot on.

unless you talk about li-po batteries.

what the difference with lipo's?

*sorry just curious

It'll also depend on what current the battery can supply... If the battery can't supply enough then the voltage will drop due to it's internal resistance. A Lipo can handle this a lot better than a NiMH so the 7.4V of a double cell lipo is usually plenty, when you'd want a higher voltage Nimh for the same job.

Buy 9.6V 1400 or so mah battery, It should last you 1000 shots. You can use that battery that you got with gun as a back up. Later on you can buy an additional battery. Having two of them is very good, I have seen a lot of people regreted buying 3000+mah batteries .It takes them ages to charge and do not have a backup battery when the first one dies.

Do not use anything more then 9.6v, and do not think about buying LiPo. Your mechanism is not ready for that and they are not very safe (ofc you can buy good ones, but they cost).

The only electric guns I now have are an AK47 and an MP40. I was wondering if fitting a different battery or doing summat to reduce the voltage might reduce the rate of fire to something similar to the real weapons.

Buy 9.6V 1400 or so mah battery, It should last you 1000 shots. You can use that battery that you got with gun as a back up. Later on you can buy an additional battery. Having two of them is very good, I have seen a lot of people regreted buying 3000+mah batteries .It takes them ages to charge and do not have a backup battery when the first one dies.

Do not use anything more then 9.6v, and do not think about buying LiPo. Your mechanism is not ready for that and they are not very safe (ofc you can buy good ones, but they cost).

why would you want a battery that only lasts 1,000 shots

the 3700mah batteries only take about 1.5 hours to charge or less from flat, so i really dont know what your on about with the fact of taking long to charge,

and a 3700mah lasts me all weekend and still has plenty of charge afterwards.

unless your rediculously trigger happy, and the motors and gears are up to the job of those batteries as i have used it in the old m1a1 without the trades, and the new one with it and the new cyma mock up 28 thompson.

so you can't go wrong with a 3700 MaH 8.4V. nimh

and i personally think NiCads are too much hassle and you get the same results with a nimh.

The only electric guns I now have are an AK47 and an MP40. I was wondering if fitting a different battery or doing summat to reduce the voltage might reduce the rate of fire to something similar to the real weapons.

7.2v will lower your ROF but I'm pretty sure any lower voltage than that and the thing won't cycle. A neat solution to lower ROF to whatever you want (and use the normal 8.4v battery) would be the mosfet thingy http://unconventional-airsoft.com/

yep, does anyone know what A&K are using in thier M60's, as they have a variable rate of fire from the buffer at the front?

Theres no reason you couldnt wire in a variable resistor to do the same job. You can pick them up from maplins for a couple quid i expect.

Do not use anything more then 9.6v, and do not think about buying LiPo. Your mechanism is not ready for that and they are not very safe

There seems to be a lot of scaremongering surrounding lipos at the moment. They are no so fragile that they explode at the slightest knock or will tear your gearbox apart becuase its not 'lipo ready'. If you were running a 11.1v lipo then yes you will probably want to upgrade certain aspects of your gearbox as the ROF will be phenominal. However a 7.2v lipo will give a similar ROF to a 8.4v nimh. The advantage is they are about 1/5 the size (depending on the MaH). Yes you will need a balancing charger but you can pick them up dirt cheap.

Provided you are not silly with lipos and maintain a good charging disipline they are a good option