Help me, for I am rubbish.
I got a CYMA Thompson some time ago, and the advice was to ditch the battery it came with, because they are crap. So I did, and I used my own. However, being the illiterate idiot I am, I didn't realise at the time that the battery I was now using was a 9.6v not an 8.4v.
After a good few successful events I came across problems last weekend when my main battery (the 9.6v one) didn't charge properly and I swapped to one of my other 8.4v minis. They power my standard, non upgraded Marui M4 normally with no problems at all. However neither of them would even turn the Thompson over.
Both batteries were charged overnight on a fixed current charger.
So...as far as I can work out from checking spec sheets, the CYMA Thompson is a 8.4v gun. Is this correct ?
My conclusion is that I have either 2 dud batteries, or a dud charger. My challenge is that my M4 is currently broken and away for repair so I have no way of actually testing the 8.4v batteries. And I don't own a volt meter.
God I hate airsoft guns.
The tommy should run on either voltage, so yeah, sounds like duff batteries or gubbed charger.
Mini batteries won't last long in a Cyma Thompson either, due to the bigger, more powerful spring. Mine last for less than 1,000 rounds, even when fully charged.
When I want your opinion - I'll tell you what it is!
I run an 8.4V mini in mine (albeit with a 1J spring) with no trouble at all.
When you got it, was it new? Did you upgrade the bearings? Mine were plastic, but I changed them to metal while I had the box apart to change the spring.
It may be they're worn and binding on yours to the degree that the 9.6V can turn them, but 8.4 can't.
Got it from new and it hasn't been upgraded. It chronos at 330 with .2s so that's about 1J I think.
I'm happy to use a 9.6v battery in it, but am I going to do any damage ?
For future reference, the answer is 8.4v. I had both a dud batery and a dud charger.
glad u got the problem sorted out in the end 