Batteries For Cordless Power Tools

Batteries For Cordless Power Tools

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Memory Effect
Certain types of batteries are more prone to "memory effect" than others. When you don't periodocally discharge certain batteries, large crystals can form on cell plates. The accumulation of crystals can damage a battery's electrical storage area (memory effect). Lithium-ion cordless power tool batteries are much less likely than nickel-cadmium batteries to be compromised due to memory effect. A nickel-cadmium cordless power tool battery can easily lose storage capacity throughout the life of the cell if you don't regularly discharg it.
Efficiency
Lithium-ion batteries operate at different efficiencies than nickel-cadmium batteries. In general, nickel-cadmium batteries last longer than lithium-ion batteries. The typical lithium-ion battery lasts for approximately three years, while nickel-cadmium batteries last for around five years. Lithium-ion batteries designed for use in power tools offer around 500 charge/discharge cycles while nickel cadmium portable power tool batteries offer up to 1,000 charge/discharge cycles.
Models
DeWalt manufactures secondary cells engineered for use in their cordless power tools. They make a few models of lithium-ion and nickel-cadmium batteries that are interchangeable. You can use them in any one of several DeWalt cordless power tools. Their "XRP" line of cordless power tool batteries features a lithium-ion and a nickel-cadmium battery. Their "Compact" batteries series also features a lithium-ion as well as a nickel-cadmium cordless power tool battery. Each battery model in both lines of DeWalt cordless power tool batteries is an 18-volt secondary cell. The XRP lithium-ion power tool battery takes approximately an hour to charge and weighs 1.5 pounds The XRP nickel-cadmium battery takes an hour to charge and weighs a hefty 2.4 pounds. DeWalt's Compact lithium-ion battery recharges in around 30 minutes and weighs in at one pound. The nickel cadmium battery in DeWalt's Compact series takes an hour to charge and weighs around 1.7 pounds.
Lithium-Ion Batteries
Lithium-ion batteries are rechargeable and offer many benefits when used in cordless power tools. Ridgid employs either a 12-volt or an 18-volt lithium-ion battery in their cordless power tools. Depending on the tool, Ridgid cordless power tool batteries can fully charge in anywhere between 20 and 45 minutes. Lithium-ion batteries are engineered to last for around 3 years or 500 charge/discharge cycles. Unlike other rechargeable batteries like nickel-cadmium batteries, lithium-ion batteries do not tend to self-discharge while in storage for extended periods.
Batteries
Nickel-cadmium and lithium-ion batteries are the most widely used types of rechargeable batteries for cordless power tools. The 19.2-volt nickel-cadmium batteries fitted into the 17191 drill driver, 17090 impact wrench and C3 trim saw cordless power tools completely recharge in around one hour. The 4.8-volt removable, rechargeable nickel-cadmium battery pack in the Craftsman 61078 rotary tool recharges in around three hours. The Craftsman 11398 cordless screwdriver employs a 4-volt lithium-ion battery.

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