Rebuild a Cordless Tool Battery

An affordable alternative to a new bombardment pack

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Introduction

Cordless tool batteries eventually fail, only replacement batteries can exist amazingly expensive. To save money, consider rebuilding the bombardment pack.

Tools Required

Materials Required

  • Replacement battery cells
  • Rosin-cadre solder
  • Tape
  • Wire

Power Tool Batteries: Replace the Cells in the Battery Pack

When your power tool battery pack bites the grit, probably your showtime inclination is to purchase a new one. But if the battery is out of production or the price of a new i is sky high, consider rebuilding it yourself instead of paying a professional rebuilder. That'll save you lot about $25. Y'all'll demand new cells, a soldering iron and rosin-core solder, a glue gun, and some wire and record. The whole process takes nearly an 60 minutes.

About power tool battery packs utilise 1.7-in. 10 .9-in. "Sub C" size batteries. Remove the screws that hold the pack together and yank the pinnacle off. Then remove the cluster of batteries and mensurate ane of the cells. Then go the milliamp-60 minutes (mAh) rating off the old batteries (or search online for the cell specs). If yous're willing to spend more, upgrade to cells with a higher mAh rating—they hold more juice. Just brand certain they take a belch rating of 5C or higher. And always buy cells with the tabs already welded in place (all-battery.com is one online battery seller). Then go to work.

Project step-by-pace (2)

Pace 1

Arrange and Glue

rebuild cordless tool battery hot glue

Lay out the kickoff row of new cells on a flat surface and conform the polarity and solder tabs in the same direction as the old pack, using the one-time battery pack as a template. And then glue them together with a hot-melt mucilage gun. This isn't the only affair y'all can do with hot glue.

Step 2

solder the cells battery pack

Protect the bombardment by clamping a estrus sink onto the tabs before you use heat. Then solder the tabs together with rosin-core solder. Indistinguishable the process with the boosted rows of cells. Transfer the temperature sensor and insulators from the old battery and reinstall in the plastic example. Charge it up, test it out and start your adjacent dwelling improvement project.