The 4-cell ThinkPad battery 77 is a replacement/spare battery for P50 systems. The battery is rechargeable and can be used as a replacement or as a convenient spare for mobile workstation ThinkPad P50 systems. This battery is powered by Lithium-ion technology and has a safeguard chip which authenticates with Lenovo systems. The battery lasts on average 66 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.