The Lenovo ThinkPad 76+ Laptop Battery is a premium 6-cell 4400mAh external replacement battery custom engineered for the 15.6-inch Lenovo ThinkPad E550, E555, E560, and E565 series laptops. Featuring a stable 10.8V/11.1V architecture and premium lithium-ion cells, it provides highly efficient power management, stable voltage output, and the necessary runtime to complete office workflows, student assignments, and daily digital tasks away from the wall outlet. Equipped with advanced integrated safety chips, it protects your hardware against overcharging, overheating, over-current, and short-circuit faults. Designed to meet strict OEM structural measurements, this external battery drops directly into the rear battery bay with zero tools required, making it the perfect replacement solution to revive your laptop’s original mobile freedom.
Features
Premium Grade-A lithium-ion cells for stable, long-lasting power and optimal capacity retention.
4400mAh 6-cell configuration provides dependable daily runtimes for office workflows and multi-tasking.
Built-in multi-protection circuitry guards against overcharging, overheating, over-current, and short circuits.
Clean, direct-fit housing designed to match the original contours of the ThinkPad chassis perfectly.
Supports hundreds of seamless charge-discharge cycles for a reliable, multi-year operating lifespan.
Tool-free external slide-in installation featuring dual-sliding spring release latches.
Key Specifications
Battery Model: 76+ / 45N1754 / 45N1757
Battery Type: Lithium-Ion (Li-Ion)
Cells: 6-Cell
Voltage: 10.8V / 11.1V
Capacity: 48Wh (4400mAh) / Also compatible with 56Wh (4900mAh) variants
Color: Black
Condition: Brand New Replacement Battery
Rechargeable: Yes
Compatible Laptop Models
Lenovo ThinkPad E550 Series
Lenovo ThinkPad E555 Series
Lenovo ThinkPad E560 Series
Lenovo ThinkPad E565 Series
Compatible Part Numbers
45N1754
45N1755
45N1756
45N1757
313000252
SB10H45071
SB10H45073
4X50G59217
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