How to Heat Lithium Batteries in the Winter: A Comprehensive Guide for Extended Battery Life in Heated Vests and Clothing

Winter is coming, and for many of us, that means bundling up in layers of clothing to keep warm. But what if you could wear a heated vest or jacket that provides consistent warmth for an extended period? The key to this comfort lies in the lithium batteries that power these heated garments. However, lithium batteries are notorious for their performance drop in cold weather. So, how do you keep them warm to ensure your heated clothing stays warm for longer? Let's dive in.

Why Lithium Batteries?

Lithium batteries are the go-to choice for heated clothing for several reasons:

  1. High Energy Density: They can store a lot of energy in a small space, making them ideal for compact, lightweight heated clothing.
  2. Longevity: Lithium batteries have a longer lifespan compared to other types of batteries.
  3. Quick Charging: They can be recharged quickly, so you're not left out in the cold for too long.

The Problem with Cold Weather

Cold temperatures can significantly impact the performance of lithium batteries. The chemical reactions inside the battery slow down, leading to:

  • Reduced capacity
  • Lower voltage output
  • Slower charging times

The Solution: Heating Lithium Batteries

Insulated Battery Pockets

Many heated vests and jackets come with specially designed pockets to hold the lithium batteries. These pockets are often insulated to keep the batteries warm, thereby maintaining their performance.

External Battery Warmers

Battery warmers are devices that can heat your lithium batteries externally. They usually come with a USB connection that you can plug into a power source.

DIY Solutions

  1. Hand Warmers: Placing chemical hand warmers next to your batteries can provide enough heat to keep them functioning optimally.
  2. Thermal Wraps: Wrapping your batteries in thermal wraps can also help retain heat.

Advanced Solutions: Heated Lithium Batteries

Some companies are now developing lithium batteries with built-in heating elements. These batteries can last up to 20 hours, a significant improvement over the typical 3 to 10-hour lifespan of most heated clothing batteries.

Safety Precautions

  1. Never Overheat: Batteries can be damaged or even explode if they get too hot. Always follow the manufacturer's guidelines.
  2. Quality Matters: Always opt for high-quality lithium batteries from reputable manufacturers.
  3. Regular Checks: Periodically check the batteries for any signs of wear and tear or damage.


Heating lithium batteries in the winter is crucial for maintaining the performance of your heated clothing. From insulated pockets and external warmers to advanced heated lithium batteries, there are several ways to keep your batteries warm and your body warmer. So, don't let the cold weather stop you; stay warm and comfortable all winter long with your heated clothing.

Stay warm, stay safe!