Most battery-powered security cameras use rechargeable lithium ion or lithium polymer batteries. Some cameras, such as the NETGEAR Arlo wire-free camera, use replaceable CR123 lithium 3-volt photo batteries.
Standard lithium ion and lithium polymer batteries have a standby time of three to six months between recharges, while the rechargeable lithium CR123 have a battery life of between four and six months. Keep rechargeable and replaceable batteries away from dampness, since the battery components of cameras are not waterproof, even if the cameras are. Always keep extra batteries on hand and ensure that the camera batteries are fresh so that the cameras do not die when surveillance footage is needed the most.