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Small green rectangular CMOS battery with two wire leads

Cameron & Co

Cameron & Co DS-CS-DED500BU CMOS Battery 7.2V 0.02Ah

SKU CH-C7Z0-ESHFA

Keeps system time and BIOS settings on compatible Dell, HP, Gateway and Hitachi laptops with a 7.2 V 0.02 Ah Ni-MH cell

  • Product typeBattery
  • Maintains system time with 7.2V 0.02Ah Ni-MH cell
  • Fits Dell Inspiron 2100 2800 500M XPS M140 Latitude D500
  • Replaces OEM part numbers 3E158 and 3R459
  • Compact 41.32 x 12.42 x 7.52 mm form factor
  • Compatible with HP Omnibook 500 Gateway Solo 2100 2200 2300 3300 3350 3550

CMOS Battery for Dell and Gateway Laptops

This Cameron & Co DS-CS-DED500BU is a 7.2V Ni-MH CMOS battery designed to maintain system clock and BIOS settings in compatible Dell Inspiron and Latitude models. It replaces OEM part numbers 3E158 and 3R459 across several laptop series.

Fits Inspiron 2100, 2800, 500M and Latitude D500

Suitable for owners of the listed Dell, HP Omnibook and Gateway Solo laptops needing a direct replacement. Not for users whose device requires a different voltage, connector layout or chemistry such as a lithium coin cell.

7.2V 0.02Ah Ni-MH Pack in Green

The single deciding specification is the 7.2V 0.02Ah nickel-metal hydride pack measuring 41.32 x 12.42 x 7.52 mm. Verify that your original battery matches this voltage, capacity and physical size before ordering.

How it compares

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

Price $9.99
Cheaper than about 92% of the 27,790 comparable items (median $30.99).

Specifications

Product
Brand nameCameron Sino
Model nameDS-CS-DED500BU
Product typeBattery

Questions about this item

How long will the 7.2 V 0.02 Ah capacity keep the system clock running once installed?

The 7.2 V 20 mAh Ni-MH cell supplies enough charge to maintain CMOS settings for several years under normal laptop use.

What connector standard does this CMOS battery use and what does it limit?

It uses a two-pin plug that matches the original Dell 3E158 and 3R459 parts; the connector limits installation to models wired for that pin-out.

Will the 41.32 x 12.42 x 7.52 mm green pack fit my Latitude D500 battery compartment?

Yes, those dimensions match the factory CMOS slot in the Latitude D500 and the other listed Dell, HP, Gateway and Hitachi models.

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