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Rectangular black 9-cell laptop battery with connector pins

PISKEKAT

PISKEKAT 8960mAh 9-Cell 57++ laptop battery

SKU CH-T6DZ-CP8H1

Replacement 11.1 V 8960 mAh 9-cell battery for Lenovo ThinkPad T440P, T540P, W540, W541, L440 and L540 series

  • Battery TypeLaptop Batteries
  • Extended runtime with 8960mAh 9-cell capacity
  • Reliable power delivery at 11.1V voltage
  • Fits ThinkPad T440P T540P W540 W541 L440 L540
  • Certified CE FCC for safety compliance
  • Up to 500 recharge cycles over battery life

Replacement battery for ThinkPad T and W series

This 9-cell 57++ unit delivers 8960mAh at 11.1V and replaces Lenovo part numbers 45N1144 through 45N1153 and 0C52863/0C52864. It fits ThinkPad T440P, T540P, W540, W541, L440 and L540 models. The pack is rated for up to 500 recharge cycles over its service life.

Capacity and voltage limits for daily use

The 8960mAh rating sets the practical runtime ceiling for these 11.1V systems. Capacity will gradually decline across the 500-cycle design life, so users who need consistent all-day operation should plan for eventual replacement. The battery chemistry requires an initial conditioning routine of three to four partial discharge cycles down to 10-20% before full capacity is reached.

Black 9-cell housing with standard latch interface

The black enclosure matches the original chassis colour and uses the factory latch mechanism for tool-free installation. If the laptop does not recognise the pack on first fit, reseating the connector usually resolves detection. The 9-cell form factor adds rear protrusion compared with 6-cell units, which raises the back of the machine slightly on a desk.

Highlights

  • Extended runtime with 8960mAh 9-cell capacity
  • Reliable power delivery at 11.1V voltage
  • Fits ThinkPad T440P T540P W540 W541 L440 L540
  • Certified CE FCC for safety compliance
  • Up to 500 recharge cycles over battery life

Specifications

Battery TypeLaptop Batteries

Questions about this item

How do I choose the right version among the listed part numbers for my ThinkPad?

Match your original battery part number against the replacement list — 45N1144, 45N1145, 45N1148, 45N1149, 45N1152, 45N1153, 45N1150, 45N1151, 0C52863 or 0C52864 — to confirm fit for T440P, T540P, W540, W541, L440 or L540 models.

What does the 8960 mAh capacity mean for daily runtime on a ThinkPad?

The 9-cell 57++ pack rated at 11.1 V and 8960 mAh stores more energy than standard 6-cell batteries, so compatible T440P, T540P, W540, W541, L440 and L540 systems run longer between charges.

What interface does the battery use and what limits does it impose?

It connects through the ThinkPad’s proprietary battery bay interface; the laptop’s charging controller manages voltage and current, so the pack delivers its rated 11.1 V and up to 500 recharge cycles within those firmware limits.

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