Quick tech specs
- Notebook battery
- for ThinkPad P50 20EN, 20EQ; P51 20HH, 20HJ
- 1 x lithium ion 4-cell 66 Wh
Know your gear
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 utilizes over-discharge protection to ensure a secure flow of power.*Many factors affect battery life.