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45N1003 ✓ 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 LENOVO 45N1003 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.

WHERE IT FITS
BATTERY LITHIUM 45N1003
SPECIFICATIONS
TypeBattery
Depth55.7 mm
Width206.9 mm
Height20.1 mm
Weight340 g
Product colourBlack
Battery voltage10.8 V
Battery capacity57 Wh
Battery technologyLithium-Ion (Li-Ion)
Number of battery cells6
Harmonized System (HS) code84732990
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 45N1003 MFR LENOVO Lenovo ThinkPad Battery 70+ (6 cell)
KEY FEATURES
Battery-Backed Write Cache Module
Rechargeable Battery Technology
Provides cache backup power for 48+ hours after power loss
Hot-Plug Capable
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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 12
0A36302Compatible
IBM Notebook Battery 6-Cell 57Wh 10.8V 5.2Ah Li-Ion - ThinkPad 70+ - Option
compatible
121500078Compatible
IBM Notebook Battery 6-Cell 57Wh 10.8V 5.2Ah Li-Ion - ThinkPad 70+ - APN
compatible
121500079Compatible
IBM Notebook Battery 6-Cell 57Wh 10.8V 5.2Ah Li-Ion - ThinkPad 70+ - APN
compatible
121500139Compatible
IBM Notebook Battery 6-Cell 48Wh 10.8V 4.4Ah Li-Ion - ThinkPad 70+ - FRU
compatible
121500140Compatible
IBM Notebook Battery 6-Cell 48Wh 10.8V 4.4Ah Li-Ion - ThinkPad 70+ - FRU
compatible
45N1000Compatible
IBM Notebook Battery 6-Cell 57Wh 10.8V 5.2Ah Li-Ion - ThinkPad 70+ - APN
compatible
LIFECYCLE
StatusUNKNOWN
Availability
RoHS CompliantEAR99ESD SensitiveDG Class 9 — LithiumRestricted Air Freight
THIS PART SUBSTITUTES FOR 20
0A36302SUBSTITUTE
IBM Notebook Battery 6-Cell 57Wh 10.8V 5.2Ah Li-Ion - ThinkPad 70+ - FRU
LENOVO
121500078SUBSTITUTE
IBM Notebook Battery 6-Cell 57Wh 10.8V 5.2Ah Li-Ion - ThinkPad 70+ - FRU
LENOVO
121500079SUBSTITUTE
IBM Notebook Battery 6-Cell 57Wh 10.8V 5.2Ah Li-Ion - ThinkPad 70+ - FRU
LENOVO
121500139SUBSTITUTE
IBM Notebook Battery 6-Cell 57Wh 10.8V 5.2Ah Li-Ion - ThinkPad 70+ - FRU
LENOVO
121500140SUBSTITUTE
IBM Notebook Battery 6-Cell 57Wh 10.8V 5.2Ah Li-Ion - ThinkPad 70+ - FRU
LENOVO
42T4790SUBSTITUTE
IBM Notebook Battery 6-Cell 57Wh 10.8V 5.2Ah Li-Ion - ThinkPad 70+ - FRU
LENOVO
42T4791SUBSTITUTE
IBM Notebook Battery 6-Cell 57Wh 10.8V 5.2Ah Li-Ion - ThinkPad 70+ - FRU
LENOVO
42T4792SUBSTITUTE
IBM Notebook Battery 6-Cell 57Wh 10.8V 5.2Ah Li-Ion - ThinkPad 70+ - FRU
LENOVO
42T4793SUBSTITUTE
IBM Notebook Battery 6-Cell 57Wh 10.8V 5.2Ah Li-Ion - ThinkPad 70+ - FRU
LENOVO
42T4794SUBSTITUTE
IBM Notebook Battery 6-Cell 57Wh 10.8V 5.2Ah Li-Ion - ThinkPad 70+ - FRU
LENOVO
42T4795SUBSTITUTE
IBM Notebook Battery 6-Cell 57Wh 10.8V 5.2Ah Li-Ion - ThinkPad 70+ - FRU
LENOVO
42T4796SUBSTITUTE
IBM Notebook Battery 6-Cell 57Wh 10.8V 5.2Ah Li-Ion - ThinkPad 70+ - FRU
LENOVO
42T4797SUBSTITUTE
IBM Notebook Battery 6-Cell 57Wh 10.8V 5.2Ah Li-Ion - ThinkPad 70+ - FRU
LENOVO
42T4818SUBSTITUTE
IBM Notebook Battery 6-Cell 57Wh 10.8V 5.2Ah Li-Ion - ThinkPad 70+ - FRU
LENOVO
42T4819SUBSTITUTE
IBM Notebook Battery 6-Cell 57Wh 10.8V 5.2Ah Li-Ion - ThinkPad 70+ - FRU
LENOVO
42T4852SUBSTITUTE
IBM Notebook Battery 6-Cell 57Wh 10.8V 5.2Ah Li-Ion - ThinkPad 70+ - FRU
LENOVO
42T4911SUBSTITUTE
IBM Notebook Battery 6-Cell 57Wh 10.8V 5.2Ah Li-Ion - ThinkPad 70+ - FRU
LENOVO
42T4920SUBSTITUTE
IBM Notebook Battery 6-Cell 57Wh 10.8V 5.2Ah Li-Ion - ThinkPad 70+ - FRU
LENOVO
42T4921SUBSTITUTE
IBM Notebook Battery 6-Cell 57Wh 10.8V 5.2Ah Li-Ion - ThinkPad 70+ - FRU
LENOVO
42T4922SUBSTITUTE
IBM Notebook Battery 6-Cell 57Wh 10.8V 5.2Ah Li-Ion - ThinkPad 70+ - FRU
LENOVO
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FREQUENTLY ASKED QUESTIONS
What is 45N1003?
45N1003 is a Lenovo ThinkPad Battery 70+ (6 cell) manufactured by LENOVO. It is classified as a BATTERY (LITHIUM).
What parts can replace 45N1003?
There are 12 known substitutes for 45N1003: 0A36302, 121500078, 121500079 and 9 more. Substitute compatibility should be verified for your specific system.
Is 45N1003 still available?
45N1003 is currently Unknown.
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