I've been a big fan of Eneloop rechargeable batteries for a while now. They not only offer great capacity at 2000mAh, but are capable of holding 70% of their charge over 5 years! To top it off, the latest 4th generation Panasonic Eneloops are able to be recharged 2,100 times!
These make great batteries to have around the house but also do amazingly well in your radio transmitters that use AA batteries and are currently on sale right now at their lowest prices seen, $22.99 for 8 pack, making now a perfect time to pick up a pack or two!
Buy Now Eneloop AA 8-Pack
Buy Now Eneloop AA 4-Pack