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Small green rectangular CMOS battery with two wires attached

Cameron & Co

Cameron & Co DS-CS-FU4210BU laptop battery 7.2V 40mAh Ni-MH green

SKU CH-GS5A-Y7S5A

Ni-MH CMOS battery for Fujitsu LifeBook T4210, T4215 and T4220, 7.2 V 40 mAh capacity

  • TypeBattery
  • Keeps system clock running on Fujitsu LifeBook T4210, T4215, T4220
  • Ni-MH chemistry delivers stable 7.2 V 40 mAh backup power
  • Replaces OEM part numbers 313-016 and 6/V40H with 100 % compatibility
  • Compact 71.14 × 11.90 × 6.80 mm size fits original battery slot
  • New condition ensures full 0.29 Wh capacity from first use

Compatible Fujitsu LifeBook models

This CMOS battery fits Fujitsu LifeBook T4210, T4215 and T4220 laptops. It replaces original part numbers 313-016 and 6/V40H with a 100 percent OEM-compatible design. The green Ni-MH cell restores system clock and BIOS settings when the original backup battery fails. Installation is a direct swap inside the supported notebooks.

Capacity and headroom

The cell delivers 7.2 volts and 40 milliampere-hours for a total of 0.29 watt-hours. This capacity is sized for CMOS memory retention and real-time clock operation, not for main system power. It will maintain settings during extended shutdowns but cannot run the laptop itself. Service life matches typical Ni-MH CMOS expectations.

Ni-MH chemistry constraint

Nickel-metal-hydride chemistry means the battery self-discharges faster than lithium coin cells and requires occasional recharging from the main power supply. Systems left unplugged for months may lose BIOS settings despite a fresh cell. Buyers needing a lithium primary cell or a higher-capacity pack for main power should look elsewhere.

Highlights

  • Keeps system clock running on Fujitsu LifeBook T4210, T4215, T4220
  • Ni-MH chemistry delivers stable 7.2 V 40 mAh backup power
  • Replaces OEM part numbers 313-016 and 6/V40H with 100 % compatibility
  • Compact 71.14 × 11.90 × 6.80 mm size fits original battery slot
  • New condition ensures full 0.29 Wh capacity from first use

Specifications

BrandCameron Sino
ModelDS-CS-FU4210BU
TypeBattery

Questions about this item

Will this 7.2 V 40 mAh Ni-MH battery fit the CMOS socket on my Fujitsu LifeBook T4215 without soldering?

Yes — it matches the original 313-016 and 6/V40H part numbers and plugs directly into the CMOS header on LifeBook T4210, T4215 and T4220 models.

How can I confirm the replacement is holding charge after I install it?

Enter BIOS setup; the system clock should keep the correct date and time through several cold boots without resetting to the factory default.

Does the package include the green 71.14 × 11.90 × 6.80 mm battery only, or are any cables or tools supplied?

The box contains one green Ni-MH CMOS battery; no cables, adapters or tools are included.

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