Luckily most handheld radios and some QRP Rigs (Low Power shortwave radios) have an alternate AA battery option. It is prudent to include a AA case for any radio you own, but DO TEST it first.
Do not make the assumption that all will work fine, there are two hidden bugs particular to any radio.
– Voltage incompatibility depending on the type of batteries you use.
– The radio dropping its power on AA batteries.
So in the past few days we have been testing our Baofeng with various kind of AAA batteries options. Also Kenwood has details enough on final power out in the manual of the TH-F6 handheld that we also own. To summarize both: