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
Rectangular black lithium-ion laptop battery with label showing voltage and capacity

GOLDIX

GOLDIX L22D3P78 L22D3P77 L22C3P76 L22B3P73 laptop battery 11.7V 56.1Wh

SKU CH-239T-PBWVJ

Replacement lithium-ion battery delivering 11.7 V and 56.1 Wh for ThinkPad X1 Carbon 12th Gen and X1 2 in 1 Gen 9 laptops

  • ColorBlack
  • TypeBattery
  • Compatibilityfor ThinkPad X1 Carbon 12th Gen 21KC 21KD / X1 2 in 1 Gen 9
  • Battery TypeLithium-Ion
  • Battery Voltage11.7V
  • Battery Capacity56.1Wh
  • Direct replacement for ThinkPad X1 Carbon 12th Gen 21KC 21KD
  • Powers ThinkPad X1 2 in 1 Gen 9 21KE 21KF models
  • 1 Wh lithium-ion cell delivers extended runtime
  • Matches original part numbers SB11H56284 5B11H56383 and others
  • Brand-new battery supplied in black finish

Replacement Battery for ThinkPad X1 Carbon 12th Gen

This 11.7 V lithium-ion pack delivers 56.1 Wh of capacity for ThinkPad X1 Carbon 12th Gen 21KC 21KD and X1 2 in 1 Gen 9 21KE 21KF laptops. It replaces original part numbers SB11H56284 through SB11H56287 and 5B11H56383 through 5B11H56386. The unit ships new in black.

Internal Cell Pack with OEM Mounting Points

The battery uses the same screw-hole pattern and connector orientation as the factory modules listed above. Four interchangeable part numbers — L22D3P78, L22D3P77, L22C3P76, L22B3P73 — share the form factor despite voltage differences, so the shipped unit will click into the existing bay without adapters.

Verify Original Part Number Before Ordering

Match the sticker on your current battery to one of the replace part numbers listed: SB11H56284, SB11H56285, SB11H56286, SB11H56287 or 5B11H56383 to 5B11H56386. The compatibility list is non-exhaustive; other ThinkPad models are not confirmed by the supplier.

Highlights

  • Direct replacement for ThinkPad X1 Carbon 12th Gen 21KC 21KD
  • Powers ThinkPad X1 2 in 1 Gen 9 21KE 21KF models
  • 1 Wh lithium-ion cell delivers extended runtime
  • Matches original part numbers SB11H56284 5B11H56383 and others
  • Brand-new battery supplied in black finish

Specifications

BrandL22D3P78 L22D3P77 L22C3P76 L22B3P73
ModelL22D3P78 L22D3P77 L22C3P76 L22B3P73
ColorBlack
TypeBattery
Compatibilityfor ThinkPad X1 Carbon 12th Gen 21KC 21KD / X1 2 in 1 Gen 9 21KE 21KF Series
Battery TypeLithium-Ion
Battery Voltage11.7V
Battery Capacity56.1Wh

Questions about this item

Does the 11.7V rating match the original Lenovo part for the X1 Carbon 12th Gen 21KC 21KD?

Yes, the battery is rated at 11.7V and 56.1Wh, matching the electrical specification of the original Lenovo service parts for the X1 Carbon 12th Gen 21KC 21KD and X1 2 in 1 Gen 9 21KE 21KF series.

Will this pack fit the internal battery bay of a ThinkPad X1 Carbon 12th Gen 21KC without modification?

The battery is built to the same form factor as the Lenovo L22D3P78, L22D3P77, L22C3P76 and L22B3P73 packs, so it seats directly in the X1 Carbon 12th Gen 21KC 21KD and X1 2 in 1 Gen 9 21KE 21KF chassis with no adapters or trimming.

What is the correct screw-down sequence when installing this battery in an X1 Carbon 12th Gen 21KC?

After connecting the cable, lay the battery flat, start the two outer screws by hand to align the holes, then tighten them in a cross pattern to avoid warping the frame — the step most people skip is the initial hand-thread alignment.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.