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Rectangular black lithium-ion laptop battery with label showing 10.8V 48Wh

FOCUSTEC

FOCUSTEC 10.8V 48Wh laptop battery for ThinkPad T440 T450 T460 T470 X240 X250

SKU CH-J1MF-62FAZ

10.8 V, 48 Wh lithium-ion replacement battery fits ThinkPad T440, T450, T460, T470, X240, X250 and related models with short-circuit, overheat and overload protection

  • Battery TypeLithium-Ion
  • Restores laptop runtime with 10.8 V 48 Wh lithium-ion cells
  • Fits ThinkPad T440 T450 T460 T470 X240 X250 and L-series models
  • Built-in short-circuit overheat and overload protection for safe operation
  • Quality-controlled to match OEM capacity specifications
  • 12-month manufacturer warranty included

Replacement Battery for ThinkPad T440 T450 T460

This 10.8V 48Wh lithium-ion battery replaces original part numbers 0C52861 0C52862 45N1124 45N1125 45N1126 45N1127 45N1128 121500146 121500148. It fits ThinkPad L450 L460 T440 T440s T450 T450s T460 T460p T470p T550 T560 W550s X240 X250 models. Professional Series cells are tested to meet OEM capacity specifications. The pack restores mobile runtime for compatible machines.

Safety Features and Cell Quality

Built-in protection guards against short circuit overheat and overload during normal use. Quality grade cells deliver stable voltage across the discharge cycle. The design matches the original form factor so the battery seats securely in the chassis. No additional cooling or power management steps are required beyond standard laptop operation.

Capacity Decides Suitability

The 48Wh rating determines how long the laptop runs on a single charge. Buyers who need a higher capacity pack for extended off-grid work should verify their original battery watt-hour value before ordering. This unit matches the standard 48Wh specification for the listed ThinkPad series. It is not a high-capacity alternative.

Highlights

  • Restores laptop runtime with 10.8 V 48 Wh lithium-ion cells
  • Fits ThinkPad T440 T450 T460 T470 X240 X250 and L-series models
  • Built-in short-circuit overheat and overload protection for safe operation
  • Quality-controlled to match OEM capacity specifications
  • 12-month manufacturer warranty included

Specifications

Battery TypeLithium-Ion

Questions about this item

How do I install this battery in a ThinkPad T450, and which latch do people forget to slide?

Power off the laptop, remove the AC adapter, slide the external release latch to the unlock position, then lift the battery out; the step most people miss is sliding the second internal latch before pulling the pack free.

What maintenance will this 48 Wh lithium-ion pack need later?

No scheduled maintenance is required; keep the contacts clean, avoid storing it fully discharged, and replace the pack once runtime drops below your needs.

What limit appears first during sustained heavy load on this 10.8 V battery?

The pack’s built-in overload protection will trip if current draw exceeds its design rating, cutting power to protect the cells.

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