Ibm R31 Battery

Updated July 3, 2026

Overview

Product sourcing insights & recommendations

25 来源

The IBM ThinkPad R31 battery market is characterized by a transition to legacy aftermarket support, as original IBM production ceased years ago. Current insights reveal a dual-track market for both main lithium-ion batteries and CMOS backup batteries, primarily driven by specialized manufacturers in China.

Product Insights

The ThinkPad R31 requires two distinct battery types, both of which are currently available through aftermarket retailers and B2B manufacturers:

Main Laptop Battery: A 6-cell Lithium-ion (Li-ion) battery typically rated at 10.8V with a capacity of 4400mAh or 5200mAh. It is compatible with the ThinkPad R30, R31, and R32 series and replaces part numbers like 02K6821 and 02K6822 Cutratebatteries Made-In-China.
CMOS Backup Battery: A small 3V Lithium coin-cell with a 200mAh capacity, essential for maintaining BIOS settings. This battery has a broader compatibility range, fitting T, R, and X series ThinkPads Cutratebatteries Newegg.

Market Trends & Pricing

Sourcing Strategy: Direct stock for these legacy models is becoming rare. Procurement is shifting towards OEM/ODM manufacturers who can produce small batches or custom legacy replacements. Identified suppliers like Dongguan Mingyiyuan Electronics and Shenzhen Topping Battery specialize in these replacement categories .
B2B Pricing:
Wholesale (1,000+ pcs): Prices drop significantly to around $5.00/unit for bulk manufacturing Made-In-China.
Small Batch (10–999 pcs): Typically priced at $12.00/unit Made-In-China.
Retail/Single Unit: CMOS batteries retail for approximately $18.10, while main batteries range from $25 to $45 depending on the retailer Cutratebatteries.
Supply Outlook 2026: The global laptop battery market is projected to reach $10 billion by 2026, but the focus is heavily on high-density cells and smart battery technology. For legacy models like the R31, the market remains a niche "maintenance" segment served by high-quality aftermarket cells (Grade A) that often exceed the original 2002 specifications Businessresearchinsights Nordson Imarcgroup.

The file below provides a curated list of suppliers capable of providing or manufacturing these legacy replacement batteries.

Based on the current data, here are your next steps:

Sources & References

25 sources cited · Verified industry data & reports

IBM ThinkPad R31 Replacement Laptop Battery 10.8V ...

Battery Universe

Specifications Volts: 10.8 V Capacity: 4400 mAh Chemistry: Li-Ion Weight: 1 lbs 100% compatible to manufacturer specifications.

IBM ThinkPad R31 Battery – Compatible Replacement

CutRateBatteries.com

Lithium 200 mAh $18.10. Lithium 200 mAh Free performance, durability, and compatibility with OEM standards for form, fit, and function. ...

DBTLAP CMOS Battery Compatible for IBM Thinkpad R31 ...

Newegg

Compatible for IBM Thinkpad R31 this is the CMOS BIOS RTC battery. For laptop motherboards, not laptop batteries.

DBTLAP CMOS Battery Compatible for IBM Thinkpad R31 ...

Amazon.com

MOS Battery Compatible for IBM Thinkpad R31 1 Count Voltage 14.8 Volts Reusability Rechargeable. Compatible for IBM Thinkpad R31. Specs Measurements User guide

IBM ThinkPad R31

MacDat

Specifications, manuals, and other info about the IBM ThinkPad R31 ... Main Battery, Lithium Ion (6 cell). CMOS Battery, Lithium. Power Supply ...

Lithium Battery for IBM Thinkpad R30 R31 R32 02K6821 ...

Made-in-China.com

Battery Type 18650 Size 2/3 AA Certification. Voltage: 10.8V Capacity: 4400/5200mah Certification: Warranty: 12 months Condition: High quality, low price

Ibm R31 Battery

Overview

Product Insights

Market Trends & Pricing

Ibm Thinkpad R31 Laptop Battery 10.8v 4400mah Replacement

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Sources & References