8.4v batt in KWA m4
 

Just a simple question, was wondering if a 8.4 battery w/ mini connectors will work fine with a KWA M4.

I had someone tell me that the 8.4v not enough to pull the stock stiff spring.

Can anyone confirm?

An 8.4V crane stock battery could pull the spring in my 430 fps HK416. The rof was pretty low (more realistic), but it did work. A 9.6V mini easily pulls my 395 fps M249 spring. Not sure how well an 8.4V mini would work in the KWA though. A 9.6 would probably be ideal.

My 8.4v Tenergy large can pull a m130 spring. And yes, ROF is lowered.

it will pull it with a beasty ROF. Believe me, the KWA has an incredible motor