We have some hand held two-way radios . They work on 4-AAA batteries. I used regular batteries and my friends used rechargable batteries. I have the radio on all the time we were hunting, but only used once in a while during the day. We hunted for 3 days and my batteries were ok, but my friends with rechargable batteries have to charge them everyday. I carried with me a set of spares just in case but I did not needed them. We kept the radios on at all times for an emergency situation but used only once in a while if we going to change places.