Quick Answer
Lithium batteries outperform alkaline and nickel-based batteries in cold weather, lasting up to 3 times longer. Nickel-metal hydride (NiMH) batteries, however, can also perform well in cold temperatures. These types are suitable for emergency lighting and communication devices.
Battery Selection for Cold Weather
When selecting batteries for gear, especially in cold weather, consider the type of device and the expected usage. For example, headlamps and backup lights often require high-drain batteries. Lithium batteries are an excellent choice due to their high energy density, low self-discharge, and ability to operate in temperatures as low as -20°C (-4°F).
Cold Weather Performance Comparison
In a study, lithium batteries maintained 80% of their initial capacity at -20°C (-4°F), while alkaline batteries dropped to 20% capacity under the same conditions. Nickel-metal hydride (NiMH) batteries, however, retained 50% capacity at -20°C (-4°F). These results highlight the importance of selecting the right battery type for cold weather gear.
Choosing the Right Lithium Batteries
For cold weather gear, look for lithium batteries with a high milliampere-hour (mAh) rating, such as 9V or AA/L lithium batteries with 1200-2500mAh. When storing batteries in cold weather, keep them in a sealed container to prevent self-discharge. In extreme cold, consider using a battery warmer or a heating pouch to maintain a stable temperature.
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