We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Black rectangular 3-cell lithium-ion laptop battery

NShi

NShi 44Wh 11.2V 3-cell laptop battery for ThinkPad T550 T550s T560 W550 W550s

SKU CH-NQRE-8MWGR

A 44 Wh, 11.2 V, three-cell lithium-ion replacement battery for ThinkPad T550, T550s, T560, W550 and W550s models

  • Battery type3 Cell Lithium-Ion
  • Battery voltage rating11.2 V
  • Battery capacity3911mah
  • Product colorBlack
  • Product typeBattery
  • Compatible withThinkpad T550, Thinkpad T550s, Thinkpad T560, Thinkpad W550,
  • Ready for ThinkPad T550, T550s, T560, W550 and W550s
  • 44 Wh capacity keeps you working longer between charges
  • 3-cell lithium-ion design at 11.2 V for stable power
  • Replaces OEM part numbers 45N1740, 45N1741, 45N1742, 45N1743, SB10K12721, 00NY639
  • Tested for correct voltage, circuit protection, low self-discharge and CE, FCC, RoHS safety compliance

Ready replacement for ThinkPad T550 series

This new 3-cell lithium-ion battery delivers 44 Wh at 11.2 V and fits the ThinkPad T550, T550s, T560, W550 and W550s. It restores mobile power for owners of those models who need a direct swap.

Voltage and capacity match the original

The pack is rated at 11.25 V and 44 Wh with a 3911 mAh cell configuration, matching the OEM 45N1740, 45N1741, 45N1742 and 45N1743 specifications. Buyers whose laptops require a different voltage or higher watt-hour rating cannot use this unit.

Tested for circuit protection

Each unit is checked for correct voltage, circuit protection, stable current and low self-discharge, and carries CE, FCC and RoHS marks. No additional software, drivers or cables are included in the package.

How it compares

Measured against everything we stock in Laptop Chargers & Batteries, at today’s prices. Recalculated every night.

Price $61.99
Pricier than about 90% of the 27,790 comparable items (median $30.99).

Specifications

Product
Brand nameGreenTech
Model name45N1740, 45N1741, 45N1742, 45N1743, SB10K12721, 00NY639
Product colorBlack
Product typeBattery
Power
Battery type3 Cell Lithium-Ion
Battery voltage rating11.2 V
Battery capacity3911mah
Compatibility
Compatible withThinkpad T550, Thinkpad T550s, Thinkpad T560, Thinkpad W550, Thinkpad W550s

Questions about this item

How long will the 44 Wh rating actually run a ThinkPad T550?

A 44 Wh pack typically delivers three to five hours of mixed office work on a T550, depending on screen brightness, background apps and battery age.

Does the 11.2 V output match the original Lenovo 45N1740 specification?

Yes, the 11.2 V rating aligns with the OEM 45N1740 and 45N1743 parts, so the laptop's charging circuit recognises it without firmware issues.

Will this three-cell pack fit the internal battery bay of a W550s without modification?

The pack is built to the same 3-cell form factor as the original 45N1742, so it slides into the W550s bay and secures with the existing latch.

More in Laptop Chargers & Batteries

Similar items