Lenovo ThinkPad Battery 61+ - For Notebook - Battery Rechargeable - Proprietary Battery Size - Lithium Ion (Li-Ion) 4X50M08811

"The 6-cell ThinkPad Battery 61+ is a replacement/spare battery for ThinkPad new T-series system. The battery is rechargeable and can be used as replacement or as a convenient spare for ThinkPad T470 & T570 systems. This battery is powered by Lithium-ion technology and has a safeguard chip which authenticates with Lenovo systems. The battery lasts on average 48 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."

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