Review on 🔋 TATTU 8.4V NiMH Airsoft Battery: 1600mAh Butterfly Nunchuck Stick Battery with Tamiya Connector, Optimized for Airsoft Guns by David Caldwell

Product works as expected. I put mine in a DE M89 airsoft gun and the new battery is slightly thicker than the battery it replaces (which was only rated at 1150mAh). Where the old one might have slipped out of the gun, this new battery needs to be pulled out. However, this slight deviation is not a reason to remove the pinion and I suspect that in most or all other applications this extra width (compared to the DE M89's included battery) will not matter. My experience with the seller was also excellent. They were very responsive to the seller rating I left. I think if I had any problems they would fix it quickly.