I ended up getting a NiMh battery with the equivalent specs except it has Higher MAh rating. I wasn’t sure what the servos inside the plane could handle cause they are a little older so I figured safe bet would be to get get another 4.8v which I couldn’t get in LiPo.
also, for my war bird do you guys have any servos you’d recommend? I was looking around on amazon and was going to order some but I didn’t want to order a junky set that would cause my plane to go down.