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Rectangular black lithium-ion laptop battery pack with label showing 10.8V 5600mAh

Battery Technology Inc.

Battery Technology Inc. LN-T440X6 laptop battery 10.8V 5600mAh

SKU CH-0X7R-6XRA9 MPN LN-T440X6

Replacement lithium-ion battery delivering 5600 mAh at 10.8 V for Lenovo ThinkPad T440, T440s, T450, T450s, T550, X240 and X250 models

  • TypeConsumer Electronics
  • CompatibilityLenovo ThinkPad Notebooks:<br /> T440 T440s T450 T450s T550
  • Battery TypeLithium-Ion
  • Battery Voltage10.8V
  • Battery Capacity5600 mAh
  • Weight0.9
  • Compatible with Lenovo ThinkPad T440 T440s T450 T450s T550 X240 X250
  • 5600 mAh lithium-ion capacity powers extended work sessions
  • 8 V output matches original notebook specifications
  • Replaces OEM part numbers 68+ 0C52861 45N1124
  • WEEE certified and backed by 18 month limited warranty

Compatible ThinkPad Models

This replacement battery fits Lenovo ThinkPad T440 T440s T450 T450s T550 X240 and X250 notebooks. It delivers 10.8V output and 5600 mAh capacity using Lithium Ion chemistry. The unit weighs 0.9 and carries WEEE environmental certification.

Verify Your Part Number

Before ordering match the OEM part numbers 68+ 0C52861 and 45N1124 against the label on your original battery. Confirm your exact notebook model appears in the supported list above. Ensure the proprietary battery size matches the compartment in your device.

Ideal For Direct Replacement

Suits owners of the listed ThinkPad models who need a new 18 month warranted battery. Not for users whose laptop requires a different voltage or capacity. Not for buyers needing a battery for other Lenovo series or non-ThinkPad models.

Highlights

  • Compatible with Lenovo ThinkPad T440 T440s T450 T450s T550 X240 X250
  • 5600 mAh lithium-ion capacity powers extended work sessions
  • 8 V output matches original notebook specifications
  • Replaces OEM part numbers 68+ 0C52861 45N1124
  • WEEE certified and backed by 18 month limited warranty

Specifications

BrandBTI
ModelLN-T440X6
TypeConsumer Electronics
CompatibilityLenovo ThinkPad Notebooks:<br />
T440
T440s
T450
T450s
T550
X240
X250
Battery TypeLithium-Ion
Battery Voltage10.8V
Battery Capacity5600 mAh
Weight0.9
Shipping weight0.91 kg
Package size269 × 53 × 23 mm

Questions about this item

Does the LN-T440X6 battery pack include any cables or adapters, or is it just the battery itself?

The package contains only the 10.8V 5600 mAh lithium-ion battery; no cables, adapters or extra hardware are supplied.

My ThinkPad is a T450s — is this LN-T440X6 the correct replacement or do I need a different capacity?

The LN-T440X6 is listed as compatible with the T450s and delivers 5600 mAh at 10.8V, matching the specification for that model.

What does the 5600 mAh rating actually mean for daily run-time on a T440?

The 5600 mAh capacity at 10.8V provides roughly 60 Wh of energy, which typically yields several hours of mixed use on a T440 depending on screen brightness and workload.

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