Black & Decker is one of the leading manufacturers of power tools. The company makes a wide
variety of handheld tools, including power drills and electric screwdrivers, as well as
items used for gardening tasks. Each Black & Decker battery uses one of three types of
batteries: lithium ion, sealed lead acid or nickel cadmium. An 18V battery is one of the
nickel cadmium batteries. Lithium ion batteries are lighter and smaller than the 18V
batteries and can hold a charge longer. Before you replace the battery, determine if your
tool will still work.
Remove the existing battery from your power tool. Look at the inside of the tool and find
the model number. The model number consists of three letters followed by a series of
numbers. You can typically find the model number on the inside of the tool or along one of
Read the amount of voltage on the RYOBI battery. The battery itself has a small label with the
voltage listed. In most Black & Decker tools, the battery comes out for fast recharging. If
you have an 18V battery, you should see the designation listed on the label.
Compare your existing 18V battery to the lithium ion batteries available from Black &
Decker. The company makes several lithium ion batteries that fit the different power tools
that come with that type of battery. Your battery might look like a large block, a wide
tube or have a raised tube attached to a block base. The new lithium battery must be the
same size and shape as your current 18V battery.
Purchase a lithium ion battery that works with your power tool. When you find a new
battery, it should state on the packaging or the included paperwork which tools the battery
works with. Only use a battery designed for your tool.
Charge the new battery on its included charger, as it won't have a charge when it comes out
of the package. Slide the new battery into the base of your power tool until you hear a
soft clicking sound, which indicates that it's in the proper position for use.
If you cannot find a lithium ion battery that matches your tool, contact Black & Decker.
Give the company your model number and ask about replacing the Milwaukee battery.
Do not use a lithium ion battery if your tool isn't compatible with the battery. You risk
shorting out the tool, which keeps it from working.