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Black rectangular lithium-ion laptop battery with label showing 46Wh 14.8V

Beisite

Beisite 45N1070 45N1071 46Wh 14.8V laptop battery for ThinkPad X1 Carbon 1st Gen 3444 3448 3460

SKU CH-N4H3-H3D26

46 Wh lithium-ion replacement battery at 14.8 V for ThinkPad X1 Carbon 1st Gen models 3444, 3448 and 3460

  • ColorBlack
  • TypeBattery
  • CompatibilityFor ThinkPad X1 Carbon 1st Gen 3444 3448 3460
  • Battery TypeLithium-Ion
  • Battery Voltage14.8V
  • Battery Capacity46Wh
  • Replaces original 45N1070 and 45N1071 part numbers
  • 46Wh lithium-ion cell restores factory runtime
  • 8V output matches ThinkPad X1 Carbon 1st Gen requirements
  • Brand-new condition ensures full charge-cycle life
  • Compatible with 3444, 3448 and 3460 model variants

Replacement Battery for X1 Carbon 1st Gen

This 46Wh lithium-ion pack replaces part numbers 45N1070 and 45N1071 in ThinkPad X1 Carbon models 3444, 3448 and 3460. It delivers 14.8V to restore mobile operation when the original cell no longer holds charge. The black housing matches the factory aesthetic and fits the existing bay without modification. Supplied as a single unit ready for installation.

When to Swap the Original Pack

Replace the factory battery when runtime drops below useful levels or the system reports a permanent capacity loss. The 46Wh rating matches the design specification for these chassis, so the swap returns the laptop to its original endurance. No firmware update or BIOS change is required for the replacement to be recognised by the power manager.

Limits of the 14.8V Lithium-Ion Format

Capacity is fixed at 46Wh; the physical envelope prevents a higher-density cell from fitting the same compartment. Voltage is set at 14.8V and cannot be altered to suit other ThinkPad generations that expect a different potential. The pack uses the proprietary connector keyed for the 1st Gen Carbon, so it will not mate with later models that moved to a revised pinout or form factor.

Highlights

  • Replaces original 45N1070 and 45N1071 part numbers
  • 46Wh lithium-ion cell restores factory runtime
  • 8V output matches ThinkPad X1 Carbon 1st Gen requirements
  • Brand-new condition ensures full charge-cycle life
  • Compatible with 3444, 3448 and 3460 model variants

Specifications

Brand45N1070 45N1071
Model45N1070 45N1071
Part Number41CP4/56/128
ColorBlack
TypeBattery
CompatibilityFor ThinkPad X1 Carbon 1st Gen 3444 3448 3460
Battery TypeLithium-Ion
Battery Voltage14.8V
Battery Capacity46Wh

Questions about this item

Will this 46Wh 14.8V battery sit flush in the internal bay of a ThinkPad X1 Carbon 3444 without extra brackets?

Yes — it is built to the original 45N1070/45N1071 form factor, so it slides straight into the X1 Carbon 1st Gen 3444, 3448 and 3460 battery compartment with no adapters required.

Which screw or latch do I release first when swapping the 45N1070 pack, and what is the common mistake?

Turn the laptop over, slide the external battery latch to the unlock position, then lift the pack out; the step people miss is forgetting to press the latch back to lock before powering on, leaving the battery loose.

After how many charge cycles should I expect the 46Wh lithium-ion cell to need replacement?

The manufacturer rates the pack for a 12-month warranty period; under normal daily use most owners replace it once runtime falls below their needs, typically after a couple of years.

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