Quote:
Originally Posted by LUTNIT
But all the SystemA batteries I have seen are just made with Sanyo NiCd cells. Nothing special really. I have three packs sitting on my desk from a custom battery place and I made sure they used the exact same brand and type of cells used in official SystemA packs and they only cost me $50 each. All I'm missing is the metal rod that keeps the pack rigid but I have seen pics of European PTW owners with essentially the same thing as me and they say it works great.
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Here's a quote from Wallace from Systema USA in the PTW Users Group:
"The PTW MAX requires very high current to operate properly, and the factory 12v battery packs are the only recommended battery - this is because we have a very good and long term working relationship with Sanyo and that all the cells we got are from their "AA bin"; they are supposed to be almost as good as matched cells.
Also, if you use a 9.6v battery, the gun will fire but the motor will try to draw additional current to compensate for the lower-then-expected voltage. Because of that, two things can happen: 1) It will draw over 30 amps and pop your fuse, and 2) If the current draw is borderline 30 Amp (so the fuse doesn't pop) and you allow the heat to built-up slowly, you risk burning up the EL-003 circuit in the stock. This has been confirmed several times by the factory (not 100% cause of EL-003 failure, but most of them). So please be caution when using lower voltage batteries.
Oh and on a side note this is the same reason why you should stop using the gun as soon as the battery felt like its getting weak and is close to being drained when the battery is almost empty the voltage will drop and the motor will try to pull more current as well, which could cause EL-003 to burnt-up in the same way.
Last but not least, about chopping BBs's I've found that the PTWs are more picky about BBs then most other AEGs, and that if the BBs are not manufactured according to specification (many heavy-weight BBs are actually larger then they should) the gun will chop them in half. But that the problem is with the BB, not the gun - when using SYSTEMA BBs I can run 12v on a M90 cyilnder and it will feed every round. (Do not try this at home!!) I guess we didn't anticipate so many BB manufacturers (even a few reputable ones) would be cutting corners by using cheaper but lighter polymer and just make the round bigger to achieve additional weights.
Cheers,
Wallace"