Go to Amazon Sites : br br Goingpower 12 cell Battery for ACER Aspire 5732Z 4732 4732Z 4732Z-452G32Mnbs series - 18 Months br br Battery type Li-ion Capacity 8800mAh Cells 12-cell Voltage 111 V br 100 New from Manufacturer Up to 500 recharge cycles over the life of the battery br CE-FCC-RoHS-Certified for safety 24 x 7 email support 8-hr x 5-weekday call support 18-month hassle-free warranty br Grade A cells ensure fast charges and low power consumption Built-in circuit protection ensures both safety and stability br Operation time for standard battery6-cell 4400mah 2-3 hours for extended battery12-cell 8800mah over 4 hours Note The actual operation time depends on how much electricity is required by the device and how you use the battery