Keep your camera battery alive in Lapland’s cold by storing spares in an inside pocket close to your body, switching the camera on only when you are ready to shoot, and swapping in a warm battery as soon as the charge drops. Cold slows the chemical reactions inside lithium-ion cells, so a battery that seems empty often recovers once it warms up. Below, we cover why the drain happens, how to prevent it, and which settings help most during aurora photography.
Why do camera batteries drain so fast below freezing?
Camera batteries drain faster in freezing temperatures because the cold slows the chemical reactions inside lithium-ion cells, which raises internal resistance and reduces the power the battery can deliver. The camera then reads a low voltage and shows a low charge, even though energy remains in the cell.
This is why a battery can show 60 percent in your warm room and drop to a warning within minutes outside. The good news is that the effect is largely temporary. A cold battery that has “died” will often show extra charge again after warming up in a pocket. Long exposures, which are essential for northern lights photography, make things worse because the sensor and screen stay active for many seconds at a time. In Finnish Lapland, winter nights regularly fall well below zero, so planning for this drain is part of any serious Lapland photography routine.
How can you keep a camera battery warm outdoors?
The most reliable way to keep a camera battery warm is to keep it against your body. Store spare batteries in an inner jacket pocket, and rotate them into the camera when needed. Add a chemical hand warmer nearby, but never let it touch the battery directly.
These habits make the biggest difference:
- Use an inside pocket. A chest pocket under your outer layer stays far warmer than a coat pocket or camera bag.
- Wrap batteries in a wool sock or small pouch. This adds insulation and prevents contact with metal surfaces.
- Add a hand warmer to the camera bag. Place it beside the batteries, not against them, since excessive direct heat can damage cells.
- Keep the camera inside your jacket between shots. When you are waiting for the aurora to build, tuck the camera under your outer layer.
- Insulate the camera body. A simple neoprene cover or a scarf wrapped loosely around the body slows heat loss.
If you spend a few hours outside, think in terms of a warm battery rotation: one in the camera, others warming against your body, and a depleted one recovering in your pocket.
How many spare batteries are needed for a Lapland trip?
Most photographers should bring at least two to three spare batteries for a single night of aurora photography in Lapland, which is roughly two to three times what they would carry in mild weather. The right number depends on your camera type, exposure length, and how long you stay out.
Mirrorless cameras generally use more power than DSLRs because of their electronic viewfinders and screens, so they call for the higher end of that range. If you plan long outings, such as a multi-hour session under the night sky, carry more. For a trip lasting several nights, bring enough batteries to charge a fresh set each evening, and charge them overnight indoors rather than leaving them in the cold. A comfortable accommodation for your Lapland stay makes it easy to recharge everything each night.
A practical approach is to label your batteries in order of use. Always start with a fully charged one, and keep the others warm until needed. Charge them in your room each night so you begin the next session fresh. Also keep in mind that phone batteries suffer in the same way, so keep your phone warm if you use it for aurora forecasts or as a backup camera.
What settings help save battery during aurora photography?
The best battery-saving settings are turning off image review, lowering screen brightness, using the viewfinder instead of live view when possible, and disabling Wi-Fi and Bluetooth. Each change cuts small but constant power draws that add up quickly during long night exposures in the cold.
Here is a simple checklist to apply before you head outside:
- Disable image preview. Reviewing every frame on the screen consumes power. Check results occasionally instead.
- Dim the rear screen. A lower brightness is easier on your night vision and on the battery.
- Turn off Wi-Fi, Bluetooth, and GPS. These background connections keep draining power even when you are not using them.
- Switch off image stabilization on a tripod. Stabilization is unnecessary when the camera is fixed and uses extra energy.
- Use manual focus. Set focus to infinity once, rather than letting autofocus hunt in the dark.
- Power the camera down between sequences. If you are waiting for the lights to appear, switch it off.
Using a remote shutter release or a timer also helps, because it lets you leave the camera alone instead of handling it repeatedly. If you would rather focus on the experience than the gear, our Northern Lights Adventure by Minivan is a comfortable option. It is a 3-hour evening tour at 175 € per person (minimum charge for 2 persons), where our guides check the latest aurora and visibility forecasts and choose the best evening of your stay. You can warm up in the vehicle between shooting stops, which gives your batteries and your hands a welcome break. We cannot guarantee that the northern lights will appear.
How should you warm up gear to avoid condensation?
To avoid condensation, seal your camera in an airtight plastic bag before coming indoors and let it warm up slowly to room temperature while still inside the bag. Moisture then forms on the outside of the bag instead of on the lens and electronics.
When a very cold camera meets warm, humid indoor air, water vapor condenses on its cold surfaces, including the lens glass and internal parts. That moisture can fog optics and, over time, harm electronics. A few simple steps prevent this:
- Bag it before you enter. Place the camera, lens, and batteries in a zip-lock bag outside, and squeeze out as much air as you can.
- Leave it sealed for an hour or more. Let it reach room temperature gradually, ideally in an entryway or a cooler part of the room.
- Remove memory cards and batteries afterward. Once everything is dry, take them out to charge and download images.
- Add silica gel packets to your bag. They help absorb stray moisture during storage.
The same logic applies in reverse. Going from a warm room straight into deep cold is gentler on gear, but a short acclimatization period on a cool porch helps. Treating warming up as a slow, deliberate step is one of the simplest habits that protect your equipment through a whole Lapland winter.
With a little preparation, cold weather becomes manageable rather than a threat to your photos. Keep your batteries warm, trim unnecessary power use, and warm your gear gradually, and you can enjoy the quiet Arctic nights with a camera that keeps going.