Review on Yaesu Original FBA-39 AA Battery Case for VX-8R Series (Fits 3 x AA Batteries) - Belt Clip and Screws Included by Eric Surabhi

The output power when using AA batteries is a little less than 1W, which isn't much but is sufficient for short distances. More importantly, you can power your radio with just a bunch of AA batteries for listening, monitoring, scanning and recording. Lately I've been using my FT3D as a scanner and it allows me to store my Li-Ion batteries for bi-directional use while I only use my AA NiMH batteries to power the radio for scanning and writing.