PartsTable
Technical Data Sheet
57Y4186 ✓ Verified by PartsTable
Lenovo · BATTERY · LITHIUM
WHAT YOU NEED TO KNOW
Lithium batteries are restricted for air travel and may require a dangerous goods certificate with additional carrier fees. Ground shipping adds transit time — plan accordingly. Always check the date code, batteries degrade over time. Buy in bulk when possible, these are consumables. Key checks: Buy in bulk — consumables.
RESTRICTED for air — DG certificate required
PRODUCT OVERVIEW

The 2-Power range of products are 100% compatible and are guaranteed to match or exceed the original specifications (often outlasting original batteries by 30% to 50%!). Along each step of the process, from product to packaging, sales support to warranty, 2-Power provides a complete retail solution. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 6140-01-612-8486, indicating validated use in U.S.

government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels. Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
BATTERY LITHIUM 57Y4186
NSN: 6140-01-612-8486
FSC: 6140
CAGE: 44HN4 — LENOVO (UNITED STATES) INC. (USA)
SPECIFICATIONS
TypeBattery
Depth56 mm
Width208 mm
Height20 mm
Weight500 g
CertificationCE MARK, UL/cUL, ACA/C-Tick, PSE, KC
Product colourBlack
Battery technologyLithium-Ion (Li-Ion)
Brand compatibilityLenovo
Compatible productsThinkPad L412, L512, T410, T510, W510
Number of battery cells9
Harmonized System (HS) code84732990
NSN6140-01-612-8486
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR MFR: Lenovo ThinkPad Battery 55++ (9 Cell) TITLE COMPONENT PN 57Y4186 MFR Lenovo ThinkPad Battery 55++
KEY FEATURES
TEMP RATING: 35.0 CELSIUS DEGC
BATTERY ELECTROLYTE: LITHIUM
CELL QUANTITY: 9
TYPICAL APPLICATIONS
  • RAID cache protection during power loss events
  • Write-back cache enablement for storage controllers
  • Enterprise server data integrity assurance
  • Hot-swap battery/capacitor replacement in production
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL HEIGHT21.0 MILLIMETERS NOMINAL MM
END ITEM IDENTIFICATIONT410/420, T510/520, W510/520, AND L-SERIES THINKPADS
PART NAME ASSIGNED BY CONTROLLING AGENCYTHINKPAD BATTERY 55++
TEMP RATING35.0 CELSIUS DEGC
OVERALL WIDTH218.0 MILLIMETERS NOMINAL MM
OVERALL DEPTH79.0 MILLIMETERS NOMINAL MM
BATTERY ELECTROLYTELITHIUM
CELL QUANTITY9
VERIFIED SUBSTITUTES & CROSS-REFERENCES 12
42T4798Compatible
IBM Notebook Battery 9-Cell 94Wh 11.1V 8.4Ah Li-Ion - ThinkPad 55++ - APN
compatible
42T4799Compatible
IBM Notebook Battery 9-Cell 94Wh 11.1V 8.4Ah Li-Ion - ThinkPad 55++ - FRU
compatible
42T4800Compatible
IBM Notebook Battery 9-Cell 94Wh 10.8V 8.7Ah Li-Ion - ThinkPad 55++ - APN
compatible
42T4801Compatible
IBM Notebook Battery 9-Cell 94Wh 10.8V 8.7Ah Li-Ion - ThinkPad 55++ - FRU
compatible
42T4802Compatible
IBM Notebook Battery 9-Cell 94Wh 11.1V 8.4Ah Li-Ion - ThinkPad 55++ - APN
compatible
42T4803Compatible
IBM Notebook Battery 9-Cell 94Wh 11.1V 8.4Ah Li-Ion - ThinkPad 55++ - FRU
compatible
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99DG Class 9 — LithiumRestricted Air Freight
THIS PART SUBSTITUTES FOR 13
42T4798SUBSTITUTE
IBM Notebook Battery 9-Cell 94Wh 10.8V 8.7Ah Li-Ion - ThinkPad 55++ - Option
LENOVO
42T4799SUBSTITUTE
IBM Notebook Battery 9-Cell 94Wh 10.8V 8.7Ah Li-Ion - ThinkPad 55++ - Option
LENOVO
42T4800SUBSTITUTE
IBM Notebook Battery 9-Cell 94Wh 10.8V 8.7Ah Li-Ion - ThinkPad 55++ - Option
LENOVO
42T4801SUBSTITUTE
IBM Notebook Battery 9-Cell 94Wh 10.8V 8.7Ah Li-Ion - ThinkPad 55++ - Option
LENOVO
42T4802SUBSTITUTE
IBM Notebook Battery 9-Cell 94Wh 10.8V 8.7Ah Li-Ion - ThinkPad 55++ - Option
LENOVO
42T4803SUBSTITUTE
IBM Notebook Battery 9-Cell 94Wh 10.8V 8.7Ah Li-Ion - ThinkPad 55++ - Option
LENOVO
42T4853SUBSTITUTE
IBM Notebook Battery 9-Cell 94Wh 10.8V 8.7Ah Li-Ion - ThinkPad 55++ - Option
LENOVO
42T4905SUBSTITUTE
IBM Notebook Battery 9-Cell 94Wh 10.8V 8.7Ah Li-Ion - ThinkPad 55++ - Option
LENOVO
42T4906SUBSTITUTE
IBM Notebook Battery 9-Cell 94Wh 10.8V 8.7Ah Li-Ion - ThinkPad 55++ - Option
LENOVO
42T4907SUBSTITUTE
IBM Notebook Battery 9-Cell 94Wh 10.8V 8.7Ah Li-Ion - ThinkPad 55++ - Option
LENOVO
42T4909SUBSTITUTE
IBM Notebook Battery 9-Cell 94Wh 10.8V 8.7Ah Li-Ion - ThinkPad 55++ - Option
LENOVO
42T4912SUBSTITUTE
IBM Notebook Battery 9-Cell 94Wh 10.8V 8.7Ah Li-Ion - ThinkPad 55++ - Option
LENOVO
42T4969SUBSTITUTE
IBM Notebook Battery 9-Cell 94Wh 10.8V 8.7Ah Li-Ion - ThinkPad 55++ - Option
LENOVO
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FREQUENTLY ASKED QUESTIONS
What is 57Y4186?
57Y4186 is a ThinkPad Battery 55++ (9 Cell) manufactured by Lenovo. It is classified as a BATTERY (LITHIUM).
What parts can replace 57Y4186?
There are 12 known substitutes for 57Y4186: 42T4798, 42T4799, 42T4800 and 9 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 57Y4186?
57Y4186 is cataloged in the Federal Logistics Information System (FLIS) under NSN 6140-01-612-8486. This indicates validated use in U.S. government and defense supply chains.
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