T4220 Battery
Overview
Product sourcing insights & recommendations
The phrase "t4220 battery" primarily refers to two distinct power components for the Fujitsu LifeBook T4220 (a legacy convertible tablet PC): the main Lithium-ion laptop battery and the Ni-MH CMOS backup battery. As of late 2025 and early 2026, the market is characterized by a "legacy hardware maintenance" trend, where high-quality aftermarket replacements are sustaining the operational life of professional-grade Fujitsu enterprise devices AlibabaAccio.
Product Insights & Technical Specifications
| Feature | Main Laptop Battery (Standard/High Capacity) | CMOS Backup Battery (RTC) |
|---|---|---|
| Primary Model | FPCBP155 / FPCBP155AP LaptopbatteryexpressAlibaba | 6/V40H / 313-016 BatteryclerkNewegg |
| Chemistry | Lithium-ion (Li-ion) | Nickel-Metal Hydride (Ni-MH) |
| Voltage | 10.8V (Compatible with 11.1V systems) | 7.2V |
| Capacity | 5200mAh (Standard) to 6400mAh (Extended) | 40mAh (Standard) NeweggRometechbatteries |
| Compatibility | LifeBook T4210, T4215, T4220, T900, T730 | Specific to T4210, T4215, T4220 |
Market Trends & Insights (2025–2026)
* Legacy Demand Surge: There is a notable 5.79% growth in the laptop battery market for legacy platforms in 2026, driven by enterprise users refreshing professional-grade hardware rather than replacing it AlibabaAlibaba.
* B2B Pricing Advantages: Wholesalers in Shenzhen and Dongguan offer factory-direct pricing for FPCBP155 units as low as $5.99–$7.49/unit for bulk orders, which is significantly lower than retail prices (~$30–$89) LaptopbatteryexpressAlibaba.
* Preference for Verified Cells: Market signals indicate a strong consumer preference for "Samsung Cells" or "Verified High-Performance" labels due to historical Fujitsu battery recalls (2015–2017), which remains a key marketing angle for 2026 sellers LaptopbatteryexpressAlibaba.
* CMOS Scarcity: The 7.2V 40mAh Ni-MH CMOS battery is increasingly niche. Specialized suppliers like Rome Tech and Cameron Sino dominate this space, marketing it as an "RTC Rechargeable" solution with a 5-year service life RometechcasesNewegg.
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Fujitsu Lifebook T4220 Cmos Backup Battery 7.2v 40mah
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Sources & References
55 sources cited · Verified industry data & reports
7.2V High-Performance Replacement Battery for Lifebook T4220 ...
Amazon.com
Replacement battery Compatible with Models: Lifebook T4220 LifeBook T4215 LifeBook T4210; Specifications: Voltage: 7.2V, Capacity: 40mAh, Size: 71.14 x 11.9 ...
Fujitsu LifeBook T4220 Battery
Laptop Battery Express
Tech Specs · Fujitsu brand · 10.8 Volts - also compatible with 11.1 Volt systems · 5200 mAh; runs longer than 4400 mAh batteries · 6 Cell Li-ion · Samsung (South ...
BTI FJ-T4220 Products
Barcodes Inc
Battery Capacity: 5200 mAh Number of Cells: 6 Output Voltage: 10.8 V DC. Compatibility: Fujitsu Lifebook. Warranty: 1 Year
Fujitsu Lifebook T4220 LifeBook T4210 LifeBook T4215 ...
BatteryClerk.com
This is a replacement compatible with a Fujitsu CMOS Backup Battery · Volts: 7.2V (7.2 Volts) · Capacity: 40mAh (0.04Ah) · Type: Ni-MH · Color: Green · Fujitsu ...
Fujitsu Lifebook T4220 Battery – Compatible Replacement
CutRateBatteries
Voltage : 7.2 Capacity : 40 mAh Chemistry : Ni-MH Dimension : 71.14 x 11.90 x 6.80 mm Warranty : 12 Months
BTI Notebook Battery - For Notebook - Battery Rechargeable
CompSource.com
BTI 6-cell Lithium Ion notebook battery, 5200 mAh, 10.8 V DC, proprietary size for Fujitsu Lifebook T4210/T4215/T4220. Compatibility: Fujitsu Lifebook ...