Lithium ion (Li-ion) batteries are expensive. So get with the program and follow these battery care tips to get the longest life and best performance out of them.
- Li-ion batteries can handle only 800 to 1,000 charges. Don't recharge a battery if you've used it for just a few minutes.
- Don't leave them in the car—either in the cabin or the trunk. Heat (above 140 degrees F) and subzero cold can reduce battery life by 15 percent.
- Storing a battery in direct sunlight can really heat it up, so shield it from the sun.
- Don't store a discharged battery that has less than one-half charge. Give it a full charge and then store it.
- If your tool was sold with two batteries and you're a part-time user, stick the extra one in the refrigerator. It'll last for years and you'll have a new one to use when the first one dies.