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Small green cylindrical Ni-MH CMOS battery with wire leads

Cameron & Co

Cameron & Co CMOS Battery for DELL Inspiron 3700 3800 8000 Latitude C800 C810 2664E

SKU CH-1SJT-15PBF

A 7.2 V Ni-MH CMOS battery holding 40 mAh for Dell Inspiron 3700, 3800, 8000, 8100, 8200 and Latitude C800, C810, C840 systems

  • Product typeBattery
  • Keeps BIOS settings alive with 7.2 V Ni-MH chemistry
  • Direct fit for Inspiron 3700 3800 8000 8100 8200 and Latitude C800 C810 C840
  • Replaces OEM part numbers 02664E and 2664E
  • Compact 73.00 x 11.90 x 6.75 mm form slips into original socket
  • 40 mAh capacity delivers reliable CMOS power for legacy Dell laptops

Replacement CMOS Battery

The Cameron & Co CMOS battery is a nickel-metal-hydride cell built to keep the real-time clock and BIOS settings alive on compatible Dell Inspiron and Latitude notebooks. It targets owners of legacy machines who need a direct, solder-ready substitute for the original factory part.

7.2 V Ni-MH Cell Constraints

The pack delivers 7.2 volts and 40 mAh, yielding 0.29 Wh of energy in a 73.00 by 11.90 by 6.75 mm green wrapper. Ni-MH chemistry self-discharges faster than lithium, so the battery must receive regular charging from the main system to maintain CMOS retention.

Compatible Model Coverage

The unit replaces Dell part numbers 02664E and 2664E across Inspiron 3700, 3800, 8000, 8100 and 8200 plus Latitude C800, C810 and C840. It will not suit laptops outside this list or boards that require a different voltage, connector or form factor.

How it compares

Measured against everything we stock in Laptop Chargers & Batteries, at today’s prices. Recalculated every night.

Price $13.99
Cheaper than about 85% of the 27,790 comparable items (median $30.99).

Specifications

Product
Brand nameCameron Sino
Model nameDS-CS-DEC800BU
Product typeBattery

Questions about this item

What does the 40 mAh rating mean for daily use?

The 40 mAh cell keeps the system clock and BIOS settings alive while the main battery is removed or depleted.

What voltage does the CMOS battery provide to the motherboard?

It supplies a steady 7.2 V to the CMOS circuitry on the listed Dell models.

Which connector standard fits the 2664E part number?

The DS-CS-DEC800BU uses the original Dell two-pin CMOS connector for direct motherboard attachment.

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