BFKK
BFKK L20L3PD4 laptop battery 11.52V 57Wh for Lenovo ThinkPad E14 E15 Gen 3 Gen 4 2021 2022
A 11.52 V, 57 Wh lithium-ion replacement battery compatible with ThinkPad E14 and E15 Gen 3 and Gen 4 models from 2021 and 2022
- 57Wh capacity powers ThinkPad E14 and E15 through long sessions
- 52V Li-ion chemistry delivers stable voltage for consistent performance
- Plug-and-play design fits Gen 3 2021 and Gen 4 2022 models without extra tools
- Replaces multiple OEM part numbers including SB11E24664 and 5B11C73245
- 4948mAh rating supports extended mobile productivity away from outlets
Replacement battery for ThinkPad E14 E15 Gen 3 Gen 4
The BFKK L20L3PD4 is a new 11.52V 57Wh lithium-ion pack built to replace the original battery in Lenovo ThinkPad E14 and E15 models from 2021 and 2022. It matches part numbers including SB11E24664, 5B11E24665, L20C3PD4, SB11C73240, 5B11C73245, L20M3PD4, SB11C73243, 5B11C73244, L20D3PD4, SB11C73241 and 5B11C73242. Buyers who need a battery for other ThinkPad series or newer generations cannot use this unit.
Plug-and-play design with 4948mAh capacity
The pack arrives ready to install without soldering or firmware updates, and its 4948mAh rating restores the original runtime specification for the supported models. A black casing matches the laptop aesthetics, and the connector layout aligns with the factory socket. Users who expect bundled tools, external chargers or management software will not find them in the package.
Limited to 11.52V 57Wh form factor
The battery operates at a fixed 11.52V and 57Wh, so it cannot deliver higher voltage or capacity than the original design. It fits only the listed E14 Gen 3, E14 Gen 4, E15 Gen 3 and E15 Gen 4 chassis; other sizes or connector pinouts will not mate. Technicians who need hot-swap capability or extended-capacity cells must look elsewhere.
Highlights
- 57Wh capacity powers ThinkPad E14 and E15 through long sessions
- 52V Li-ion chemistry delivers stable voltage for consistent performance
- Plug-and-play design fits Gen 3 2021 and Gen 4 2022 models without extra tools
- Replaces multiple OEM part numbers including SB11E24664 and 5B11C73245
- 4948mAh rating supports extended mobile productivity away from outlets
Specifications
No published specifications for this item yet.
Questions about this item
How many charge cycles before the 57 Wh 11.52 V Li-ion pack drops below useful capacity?
Lithium-ion cells lose capacity with each full charge cycle; after several hundred cycles run-time will be noticeably shorter and a replacement will be needed.
What limits continuous operation of this 4948 mAh battery in a ThinkPad E14 or E15?
The 57 Wh capacity is the hard ceiling — once the stored energy is used the system must recharge or shut down.
Does the L20L3PD4 get hot or draw extra power during all-day use in a Gen 3 or Gen 4 laptop?
The pack runs at its rated 11.52 V; normal charging warmth is expected but no extra heat or power draw beyond the laptop's own management is introduced.
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