6 FAQs about Retrofit Tool Battery

Should you buy a new battery pack for a power tool?

Cordless tool batteries eventually fail, but replacement batteries can be amazingly expensive. To save money, consider rebuilding the battery pack. When your power tool battery pack bites the dust, probably your first inclination is to buy a new one.

How do you replace a battery in a power tool?

You'll need new cells, a soldering iron and rosin-core solder, a glue gun, and some wire and tape. The whole process takes about an hour. Most power tool battery packs use 1.7-in. x .9-in. “Sub C” size batteries. Remove the screws that hold the pack together and yank the top off. Then remove the cluster of batteries and measure one of the cells.

How do you test a power tool battery pack?

Most power tool battery packs use 1.7-in. x .9-in. “Sub C” size batteries. Remove the screws that hold the pack together and yank the top off. Then remove the cluster of batteries and measure one of the cells. Then get the milliamp-hour (mAh) rating off the old batteries (or search online for the cell specs).

What kind of battery do you use for power tools?

Typically you will have NiMh, or NiCad, but there are many others, like Lithium Ion. My batteries were NiCad, which have an undesirable property of having something called 'memory' (Otherwise, they are a very good battery for use in Power Tools because they can charge fast and are powerful).

How do I save money on a power tool battery pack?

To save money, consider rebuilding the battery pack. When your power tool battery pack bites the dust, probably your first inclination is to buy a new one. But if the battery is out of production or the price of a new one is sky high, consider rebuilding it yourself instead of paying a professional rebuilder. That'll save you about $25.

Are NiCad batteries good for power tools?

My batteries were NiCad, which have an undesirable property of having something called 'memory' (Otherwise, they are a very good battery for use in Power Tools because they can charge fast and are powerful). NiCad batteries can't handle nearly the same capacity as NiMh, but they don't last as long.

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