Empty Battery

In analog photography, most of the modern cameras were already dependant on a battery to power light meters, film transport, shutters and autofocus. This dependency has grown more acute in digital photography.

In digital photography, however, most of the batteries are rechargeable. This saves costs and is environmentally friendly.
Even though many cameras are equipped with special rechargeable batteries (lithium-ion technology), there are models that still use the traditional Mignon battery (AA). It is advisable to use rechargeable batteries (here nickel-metal hybrid battery – NiMH) even for these models and not regular batteries. The quality of the rechargeable battery and the recharger are also important factors. There are ones that can be used worldwide (100-250V), depending on the intended purpose. The Delta V charging method is highly recommendable. This method monitors the battery's voltage and prevents the battery from being overcharged. Nickel-metal hybrid batteries should always be completely discharged when possible. A self-discharge function on a charger is very useful. Charge capacity is indicated in mAh. The higher the rate, the higher the capacity is. This format can only be used comparatively for chargers with the same level of voltage. Unfortunately, tests show that only few chargers actually reach their actual full capacity. Look out for quality products.

Tips for digital cameras power supply

  • Make sure you have enough replacement batteries/batteries!
  • All rechargeable batteries develop problems in cold temperatures. To combat these problems, carry one or more rechargeable battery/-ies with you under your clothes to keep them warm and only put them in the camera when you’re ready to use it.
  • Avoid total discharge of a lithium-ion battery (remove an empty battery from the camera).
  • Whenever possible, discharge nickel-metal hybrid battery before charging.
    • Look in to using a high quality charger with a Delta V control system and a discharge function.
  • Reduce your camera’s power consumption!
    • Turn off the display when using the optical viewfinder.
    • Attention, especially if the distance to your subject is short, parallax errors are noticeable. More information can be found in the respective Wikipedia article: en.wikipedia.org/wiki/Parallax#Parallax_error_in_measurement_instruments.
    • Shorten photo preview time or deactivate preview.
    • Other power consuming functions that could potentially be deactivated.
      • Optical image stabiliser
      • Flash
      • Zoom on most compact cameras