Battery Information

EZ Battery Reconditioning Method

How to Repair Old Batteries at Home

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The Macintosh PowerBook 550c includes two nickelmetal-hydride (NiMH) batteries. Each battery provides power for up to 3.5 hours of work time, depending on the battery conservation features employed. A smart processor included in each battery pack indicates the battery's charge status.

For instructions on how to verify the battery voltage, see the Additional Procedures chapter of this manual.

For additional information on PowerBook batteries, voltages, ampere hours, and part numbers, see the PowerBook Battery Matrix in Hardware/Compatibility Charts.

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DIY Battery Repair

DIY Battery Repair

You can now recondition your old batteries at home and bring them back to 100 percent of their working condition. This guide will enable you to revive All NiCd batteries regardless of brand and battery volt. It will give you the required information on how to re-energize and revive your NiCd batteries through the RVD process, charging method and charging guidelines.

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