Extend the Life of Your Lithium Batteries
Lithium-ion batteries power everything from smartphones and laptops to the Milwaukee and DEWALT power tools you’ll find at Murdoch’s, plus EGO snow blowers, battery-powered lawn and garden gear, and even ride-on toys. While the batteries are efficient and long-lasting, their performance naturally degrades over time. The good news is there are practical steps you can take to extend their lifespan, and many modern chargers offer built-in optimization to help. Check your owner’s manual to see what your charger can do, then put a few easy habits to work to keep your batteries performing their best.
- Avoid Extreme Temperatures
Heat is the enemy of lithium batteries. Exposure to high temperatures can cause irreversible capacity loss, while freezing temperatures can temporarily reduce performance. DEWALT notes that batteries won’t fully charge above 105 F or below 40 F, and charging outside this range can permanently reduce run time. Keep your devices in a cool, dry environment whenever possible and avoid leaving them in hot cars or direct sunlight. - Mind Your Charging Habits
Unlike older battery types, lithium batteries do not need to be fully discharged before recharging. In fact, deep discharges can strain the battery. Aim to keep your battery level between 20% and 80% for optimal longevity. Using fast chargers frequently can also generate excess heat, so reserve rapid charging for times when you need it most. - Store Properly
If you’re storing a battery long-term, leave it partially charged. Milwaukee recommends keeping the battery at a 30-50% charge for long-term storage. Fully drained or fully charged batteries degrade faster during storage. Store them in a cool place, away from flammable materials, and check the charge every few months. - Use Genuine Chargers and Avoid Overcharging
Always use the manufacturer-recommended charger. Cheap or incompatible chargers can supply inconsistent voltage, harming the battery. Modern devices typically prevent overcharging, but unplugging once fully charged reduces heat buildup. - Limit High-Drain Usage
High-drain applications, like power tools on full power, can heat batteries and accelerate wear. Moderate use and letting devices cool between heavy-use sessions helps maintain capacity over time.
By following these guidelines, you can maximize your lithium battery’s lifespan, resulting in better performance and fewer replacements, saving both money and frustration in the long run.