For optimal use of your trailcamera, we generally recommend the use of Energizer Ultimate Lithium batteries (1.5V). These batteries deliver a high voltage, resist (extreme) temperature fluctuations and last a very long time! A disadvantage, however, is that they are not rechargeable. For rechargeable batteries, we recommend the Panasonic Eneloop or Eneloop PRO rechargeable batteries (1.2V). These popular batteries are comparable to lithium batteries, but have a slightly lower voltage.