a5 egrip battery voltage problem.

Is this 2-5 minutes of continuous firing on full auto? Or is it draining down when not in use?

IIRC, the older e-grips really gobbled up batteries. I used to keep extra 9v batteries in my kit and swap out about mid-way through a full day of playing. Not sure if it was resistance from the way the circuit was built, or just that the old microprocessors that were used in them ate up that much more power, but they'd chew through batteries fairly quickly. Mind you,d 2 minutes of sustained full-auto fire is a pretty significant amount of power, you are basically powering an electromagnet every time it cycles.

Edited by tallen702 - 27 March 2017 at 1:45pm

APE boards work pretty well and should give you slightly better battery life, especially given the programming parameters that allow you to adjust rates of fire more finely. That said, the inherent drawback to a "sear tripper" system like e-grips vs a true electropneumatic firing system (ie, FASR or Spool valve setups) is that the electromagnetic armature that actuates the sear eats up a LOT of power. It's not the board draining your battery, it's the armature. That's the "engine" of the e-grip system.

10 minutes of firing time with burst and full auto is a lot of rounds down range BTW. 7,800 rounds if you're capped and feeding at 13bps which is the top end of what most fields allow. That's $155.80 worth of Empire Hot Box (their cheapest paint) per battery charge. The only time I ever went through that much paint in a day was during high level tournament play and even then, it was just barely and I expected to fill my tank and change my batteries multiple times throughout the day (between every match actually). The max most people carry on them into the field is 1000 rounds (8ea 150 round pods in a pack), so even with a 2 minute full-auto-all-the-time lifespan, you're still talking over 1500 rounds. You literally couldn't fill your hopper fast enough to achieve dumping everything in 2 minutes. Quite honestly, 10 minutes of actual firing is a LOT of firing for a day of play.

2 true 9.6v rechargeable batteries in parallel got 17 minutes of sustained full auto. battery voltage at the start was closer to 10.4v and got down to about 8.8v before the firing became erratic. bps is low though. started at like 8-10 and ended up closer to 5 or 6 ... I suppose it might be cheaper just to get a high capacity airsoft battery or hook up 3 or 4 9v's in parallel.

pasapaca wrote: I Have exactly the same problem, I even found a uTube video of a guy with the same issue. Called Tippmann parts and some other 1800 number they gave me, but no one seems to heard about it. From my point of view this must be the motherboard, but they don´t manufacture it any longer. any ideas?

I'd go with an aftermarket MoBo from APE or similar in that instance.