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Rectangular black laptop battery with label showing model details

Battery Technology Inc.

Battery Technology Inc. L21L4P71-BTI 4-Cell 15.44V laptop battery

SKU CH-KGSX-6K62R MPN L21L4P71-BTI

A 4-cell 15.44 V lithium-ion battery compatible with Lenovo ThinkPad T14 G series notebooks

  • Replaces multiple Lenovo part numbers for broad compatibility
  • 4-cell lithium-ion design delivers 15.44V power output
  • Supports ThinkPad T14 G series laptops directly
  • Brand-new condition ensures full rated capacity from day one
  • Manufactured by Battery Technology Inc. for reliable performance

Compatible Lenovo ThinkPad T14 Battery

This 4-cell lithium-ion unit replaces the original battery in Lenovo ThinkPad T14 G laptops. It delivers a nominal voltage of 15.44 V to match the system power requirements. The pack is supplied new and ready for installation.

Direct Replacement For Internal Pack

The battery fits the existing compartment without adapters or cable changes. It restores mobile operation when the original cell pack no longer holds a useful charge. No additional hardware is required beyond the laptop itself.

For Owners Of Matching ThinkPad Models

Buyers with a compatible Lenovo ThinkPad T14 G model can use this pack as a like-for-like swap. Users of other laptop series or different ThinkPad generations should verify the part numbers listed before ordering.

How it compares

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

Price $84.99
Pricier than about 90% of the 27,790 comparable items (median $30.99).

Specifications

Product
Brand nameBattery Technology Inc.
Model nameL21L4P71-BTI
Part numberL21L4P71-BTI
Size & build
Shipping weight0.45 kg
Package size305 × 114 × 28 mm

Questions about this item

How long does the 15.44 V 4-cell Li-ion pack hold a charge during a full workday?

Runtime depends on the ThinkPad T14 G model and workload; the 4-cell 15.44 V design matches the original capacity specification.

Does the battery run hot or make noise when the laptop is under constant load?

Li-ion cells produce no audible noise; temperature rise is managed by the notebook's own thermal system.

Which Lenovo ThinkPad models accept the L21L4P71-BTI without an extra adapter?

Direct replacement for ThinkPad T14 G series; cross-references part numbers SB10W51965, 5B10W51864, 5B10W51865, 5B10W51866, 5B10W518-67, L21M4P71, L21M4P72.

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