HP HSTNN-DB9Y 41Wh 3-Cell Lithium-Ion Notebook Battery (3.44Ah, 11.25V, Black)

A failing notebook battery turns a portable laptop into a desk-bound machine. The HP HSTNN-DB9Y 41Wh Lithium-ion battery restores mobility, giving you hours of cord-free productivity. With 41Wh energy capacity and 3440mAh charge, it matches the original battery's endurance for compatible Lenovo ThinkPad models. The 3-cell design keeps weight low while delivering stable 11.25V output. Built-in protection against overcharge, over-discharge, short circuits, and thermal issues safeguards both battery and laptop. This is an internal battery, installed inside the laptop's chassis.

Who is it for

Users of Lenovo ThinkPad T470, T480, A475, or A485 who need a reliable replacement for a worn-out battery. If your laptop no longer holds a charge or dies unexpectedly, this battery restores full portability.

Main features

• 41Wh energy capacity and 3440mAh charge for extended runtime
• Lithium-ion chemistry with 3 cells for a balance of weight and power
• 11.25V output matches original specifications
• Compatible with Lenovo ThinkPad T470, T480, A475, A485
• Replaces original part numbers 01AV423, 01AV424, 01AV425, 01AV426, SB10K97579
• Black colour blends with laptop design
• Safety features: overcharge, over-discharge, short-circuit, and thermal protection
• Internal installation type

Specifications

• Battery type: Lithium-ion (Li-ion)
• Energy capacity: 41 Wh
• Voltage: 11.25 V
• Charge capacity: 3440 mAh
• Number of cells: 3
• Product colour: Black
• Brand compatibility: Lenovo
• Replaces part numbers: 01AV423, 01AV424, 01AV425, 01AV426, SB10K97579
• Installation type: Internal
• Safety features: Overcharge, Over-discharge, Short-circuit, Thermal Protection

Tips

Before ordering, confirm your laptop model and original battery part number. For best performance, fully charge and discharge the new battery a few times during initial use. Store the battery in a cool, dry place if not used for extended periods.