PartsTable
Technical Data Sheet
4X50M08810 ✓ Verified by PartsTable
LENOVO · MRO · MRO_GENERAL
WHAT YOU NEED TO KNOW
Very common replacement part Capacitors degrade slower than batteries but still lose capacity over time
CABLE LENGTH IS CRITICAL: 660093-001 = 36" (2U+), 654873-003 = 24" (1U)
PRODUCT OVERVIEW

The LENOVO 4X50M08810 is a Battery-Backed Write Cache pack, designed for enterprise RAID controllers in enterprise servers. It provides backup power to the BBWC module during unexpected power loss, ensuring cached write data is safely committed to flash memory. This is a high-volume replacement part in TPM market as enterprise servers remain widely deployed.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 6140-01-667-5591, indicating validated use in U.S. government and defense logistics supply chains.

WHERE IT FITS
MRO MRO_GENERAL 4X50M08810
NSN: 6140-01-667-5591
FSC: 6140
CAGE: 44HN4 — LENOVO (UNITED STATES) INC. (USA)
SPECIFICATIONS
TypeBattery
Weight150 g
Product colourBlack
Battery capacity24 Wh
Battery technologyLithium-Ion (Li-Ion)
Compatible productsThinkPad T470 ThinkPad T570
Harmonized System (HS) code84732990
Number of batteries included1 pc(s)
NSN6140-01-667-5591
COMPONENT DIAGRAM
CAP 72V + - CAP 72V BRACKET TO CTRL CABLE: — ~76 mm CACHE BACKUP | Supercapacitor | Cable: — Connects to RAID controller | | Controller: See controller spec SCHEMATIC: + - 2S2P SUPERCAP PACK TITLE CACHE BATT PN 4X50M08810 MFR LENOVO LENOVO External, 3c, 24Wh, LiIon, LGC
KEY FEATURES
Battery-Backed Write Cache Module
Rechargeable Battery Technology
Provides cache backup power for 48+ hours after power loss
Hot-Plug Capable
TECHNICAL CHARACTERISTICS (FLIS)
SPECIAL FEATURES3-CELL LITHIUM ION;CAPACITY:24 WH
END ITEM IDENTIFICATIONT470,T570,P51S
PART NAME ASSIGNED BY CONTROLLING AGENCYTHINKPAD BATTERY 61
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
01AV422Compatible
IBM Notebook Battery 3-Cell 24Wh 11.55V 2.08Ah Li-Ion - ThinkPad 61 - FRU
compatible
01AV423Compatible
IBM Notebook Battery 3-Cell 24Wh 11.4V 2.1Ah Li-Ion - ThinkPad 61 - FRU
compatible
01AV424Compatible
IBM Notebook Battery 3-Cell 24Wh 11.4V 2.1Ah Li-Ion - ThinkPad 61 - FRU
compatible
01AV452Compatible
IBM Notebook Battery 3-Cell 24Wh 11.4V 2.1Ah Li-Ion - ThinkPad 61 - FRU
compatible
01AV490Compatible
IBM Notebook Battery 3-Cell 24Wh 11.4V 2.1Ah Li-Ion - ThinkPad 61 - FRU
compatible
SB10K97579Compatible
IBM Notebook Battery 3-Cell 24Wh 11.55V 2.08Ah Li-Ion - ThinkPad 61 - APN
compatible
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
THIS PART SUBSTITUTES FOR 9
SB10K97579SUBSTITUTE
IBM Notebook Battery 3-Cell 24Wh 11.55V 2.08Ah Li-Ion - ThinkPad 61 - Option
LENOVO
SB10K97580SUBSTITUTE
IBM Notebook Battery 3-Cell 24Wh 11.55V 2.08Ah Li-Ion - ThinkPad 61 - Option
LENOVO
SB10K97581SUBSTITUTE
IBM Notebook Battery 3-Cell 24Wh 11.55V 2.08Ah Li-Ion - ThinkPad 61 - Option
LENOVO
SB10K97597SUBSTITUTE
IBM Notebook Battery 3-Cell 24Wh 11.55V 2.08Ah Li-Ion - ThinkPad 61 - Option
LENOVO
01AV422SUBSTITUTE
IBM Notebook Battery 3-Cell 24Wh 11.55V 2.08Ah Li-Ion - ThinkPad 61 - Option
LENOVO
01AV423SUBSTITUTE
IBM Notebook Battery 3-Cell 24Wh 11.55V 2.08Ah Li-Ion - ThinkPad 61 - Option
LENOVO
01AV424SUBSTITUTE
IBM Notebook Battery 3-Cell 24Wh 11.55V 2.08Ah Li-Ion - ThinkPad 61 - Option
LENOVO
01AV452SUBSTITUTE
IBM Notebook Battery 3-Cell 24Wh 11.55V 2.08Ah Li-Ion - ThinkPad 61 - Option
LENOVO
01AV490SUBSTITUTE
IBM Notebook Battery 3-Cell 24Wh 11.55V 2.08Ah Li-Ion - ThinkPad 61 - Option
LENOVO
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FREQUENTLY ASKED QUESTIONS
What is 4X50M08810?
4X50M08810 is a LENOVO External, 3c, 24Wh, LiIon, LGC manufactured by LENOVO. It is classified as a MRO (MRO_GENERAL).
What parts can replace 4X50M08810?
There are 9 known substitutes for 4X50M08810: 01AV422, 01AV423, 01AV424 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 4X50M08810?
4X50M08810 is cataloged in the Federal Logistics Information System (FLIS) under NSN 6140-01-667-5591. This indicates validated use in U.S. government and defense supply chains.
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