TPE 9 Cell Extended Replacement Laptop Battery for Dell Studio 17 1735 1736 1737 PP31L Series fit KM973 MT342 PW823 312-0711 312-0712 Battery type: Li-ion; Capacity: 7800mAh/87Wh; Cells: 9-cell; Voltage: 11.1V. Use the keyboard shortcuts Ctrl+F to quickly crosscheck if your requested model is listed in the following Compatible Laptop Model List or Compatible Parts Number List. Up to 500 cycles service life, low self-discharge, no memory effect; Dual IC chips provide protection against short circuit, over-discharge, overcurrent. CE/FCC/RoHS certified for product safety. Grade A Cell ensures fast charging and low power consumption; Operation time for standard batteries(6-Cell, 4400mAh) can reach approx. 2 hours, but the actual operation time depends on how much electricity is required on your device. TPE only deals with brand new premium replacement batteries. We only use the highest quality cells inside the battery pack so you will have a long service life. Our inventory turns rapidly and you will always receive a freshly manufactured battery.