How to Extend the Life of Your Power Tools' Batteries

Are you tired of constantly replacing your power tools' batteries? Whether it's a cordless drill, bandsaw, grinder, impact wrench or hammer drill, it may feature a rechargeable battery. Most portable power tools use either a lithium-ion or nickel-cadmium battery. Over time, however, rechargeable batteries such as these will degrade. Fortunately, you can extend the life of your power tools' batteries by following these tips.

Don't Let Them Drain Completely

Your power tools' batteries will last longer if you don't allow them to drain completely. In other words, try to maintain at least some charge in the batteries. Completely draining a battery so that it drops 0% will shorten its lifespan. Rechargeable batteries degrade when drained completely. By only draining your power tools' batteries to 20% to 25%, you'll get more use out of them.

Store in a Cool Environment

When you aren't using them, store your power tools' batteries in a cool environment. Heat and rechargeable batteries don't mix. Long-term exposure to heat can cause serious damage to rechargeable batteries. In some cases, heat may even render them nonfunctional.

To extend the life of your power tools' batteries, bring them indoors when you aren't using them. Storing them in a cool, climate-controlled indoor space that's out of direct sunlight will make them last a little longer.

Keep Away From Moisture

Another tip to extend the life of your power tools' batteries is to keep them away from moisture. Research has shown that rechargeable batteries are sensitive to moisture. Exposure to moisture will lower their charge capacity, meaning the batteries will hold less power.

Moisture, of course, is all around us. There's moisture vapor in the air at all times, which is measured in humidity levels. You can protect your power tools' batteries from moisture, however, by storing them in a climate-controlled indoor space. Climate-control systems, such as air conditioners, will typically remove moisture vapor from the air.

Use Regularly

Rechargeable batteries can degrade when not used regularly. If you allow a power tool to sit in your garage for several years, for instance, its charge capacity may suffer. The tool's battery may have a lower charge capacity after sitting used for multiple years.

You don't have to use your power tools on a daily basis. But if you're worried about the batteries degrading, try to get into the habit of using them at least once a month.