Board Thread:General Nerf discussion/@comment-29595756-20180423234855

Today my order from NFStrike came in! Among other cool things like 12 rounders and ammo, I got some LiFePO4 batteries, a charger, dummies and C and D sized converters.

The first thing I tested was my Rapidstrike, which for once was pretty darn impressive. It now hits harder, and fires way faster, which it really lacked stock. I can now see why people like them so much. I'm new to the whole flywheel modification thing, so am I doing this right? Is 4 batteries (12.8V) too much for stock internals? I don't want to wreck it, so I'm looking for expert advice.  