The 8-cell ThinkPad battery 78++ is a replacement/spare battery for P70 systems. The battery is rechargeable and can be used as a replacement or as a convenient spare for mobile workstation ThinkPad P70 systems. This battery is powered by Lithium-ion technology and has a safeguard chip which authenticates with Lenovo systems. The battery lasts on average 96 Watt-hours and utilises over-discharge protection to ensure a secure flow of power. Many factors affect battery life. These include: screen brightness, battery conditioning, features, applications, power management and other customer preferences.Lithium-Ion (Li-Ion) technology 8 cell system battery Over-discharge protection to prolong the life of the battery Battery energy (Watt-hours): 96 Wh Battery Safeguard chip authenticates with Lenovo systems Application/Usage: Notebook Battery Chemistry: Lithium Ion (Li-Ion) Application/Usage: Notebook Battery Chemistry: Lithium Ion (Li-Ion) Product Type: Battery Product Type: Battery Compatibility: Lenovo ThinkPad P70 Mobile Workstation Manufacturer Part Number: 4X50K14092 Limited Warranty: 1 Year Output Voltage: 15 V DC Weight (Approximate): 1.22 lb Manufacturer: Lenovo Group Limited Product Model: 78++ Product Name: ThinkPad Battery 78++ (8-cell, 96 Wh) Product Line: ThinkPad Brand Name: Lenovo Brand Name: Lenovo Height: 2.1 Width: 10.3 Depth: 4.3 Battery Size: Proprietary Battery Size Battery Rechargeable: Yes Product Family: ThinkPad Battery Size: Proprietary Battery Size Environmentally Friendly: Yes Environmental Certification: WEEE Battery Rechargeable: Yes