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The 4-cell ThinkPad battery 77 is a replacement/spare battery for P50 system. The battery is rechargeable and can be used as replacement or as a convenient spare for mobile workstation ThinkPad P50 system. 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.