If it's anything like the Covert II's - it'll be great. Either Duracell or the Energizer Lithiums and they'll last a LONG time. I've never actually had a set of batteries wear out- I just dumped em before the cam went dead. Lithiums may last you a year and the Duracells at least 3-4 months- just depends on how many pics though. Plenty of battery life.