Futaba UM3 Transmitter Battery Case 8 Cell DryTower Stock# LXH351 • Manufacturer Stock# S30050
Notes from our tech department:
in one end. It fits radios such as the 3PB (if you're not using NiCds).
This will also work on the 2P, 2PKA.
Specs: Approx dimensions- Length 4.25"