




Ships from Anthony, TX · local pickup available · (915) 886-7098
| Part number | OSC-721 |
|---|---|
| Condition | Used — sold as-is, not bench-tested |
| Availability | In stock |
Batteries are consumable. They fail gradually, not suddenly: runtime drops, the machine dies at 30% or only runs on mains, or the pack swells and starts to lift the trackpad or the case. A swollen battery is the one to act on immediately, because it will eventually crack the chassis or the screen.
The part number is printed on the face of the battery itself, so you have to open the machine to read it. Match the number, the voltage and the connector. A pack with the right physical size but the wrong voltage will not charge and can damage the board.
Most laptops with a service hatch are a 20 minute job. Machines with the battery glued into the top case, which includes most modern MacBooks, need solvent and a lot of care. Never puncture or bend a lithium pack.
Would rather not do it yourself? We fit parts like this on the bench at 816 Franklin St A, Anthony, TX 79821. See charging and battery repair, or call (915) 886-7098 and describe the fault before you buy anything. Diagnostic is $119.95, credited against the repair.
Match the part number printed on your existing unit to OSC-721. Apple and most laptop makers used several different parts in the same chassis and across left/right positions, so the model number of the laptop alone is not enough — go by the part number.
Used — sold as-is, not bench-tested. Every photo on this page is of the actual item you receive, not a stock image.
Working units carry a 30-day store warranty. Items sold as-is or for parts are not covered — the listing says which.
Yes. We are at 816 Franklin St A, Anthony, TX 79821. Call (915) 886-7098 and we will have it at the counter.