4500mAh replacement notebook battery for APPLE PowerBook G-3 Battery Type: Li-ion rechargeable battery Capacity: 4500mAh |Volt: 14.40V |Dimension:143.90x106.60x19.80 mm Compatible with: APPLE M4685 M6138LL/A M6383 MC-G3I Batteries Made with the highest quality cell *Full one year replacement warranty Note: 100% original manufacture compatible NOT OEM