Choosing the best battery for power tools is crucial for ensuring optimal performance, durability, and convenience. There are several battery options available in the market. Lithium ion, nickel cadmium, and nickel metal hydride are three most comon types of batteries for power tools. Each type of battery brings its own set of specifications and performance, which can make choosing the right one a challenge.

Lithium ion batteries have the highest energy density, meaning they can store the most power in a smaller and lighter package. Nickel metal hydride batteries come in second, followed by nickel cadmium batteries. Lithium ion batteries provide consistent power output throughout their discharge cycle, ensuring optimal performance until the battery is depleted. Nickel cadmium and nickel metal hydride batteries also offer reliable performance, but their voltage may drop gradually as the battery discharges. Lithium ion batteries have a longer life cycle compared to nickel cadmium and nickel metal hydride batteries. They can be recharged and used hundreds of times without a significant decrease in capacity. Nickel cadmium batteries have a good cycle life, while nickel metal hydride batteries have a shorter overall lifespan. Lithium ion batteries have a low self-discharge rate, allowing them to hold their charge for an extended period. Nickel metal hydride batteries also have a relatively low self-discharge rate. In contrast, nickel cadmium batteries have a higher self-discharge rate and may lose their charge more quickly when not in use. Lithium ion batteries offer fast charging capabilities and can reach full charge in a relatively short period. Nickel cadmium and nickel metal hydride batteries may take longer to charge compared to lithium ion batteries.