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Small green coin lithium battery, 20.95 by 20.13 by 3.54 mm

Cameron & Co

Cameron & Co DS-CS-IT3000BU CMOS backup battery 3.0V 200mAh green

SKU CH-2YEV-27HCS

CMOS backup battery for Casio IT3000, IT3000m53e and IT3100 models, 3.0V 200mAh lithium coin cell in green

  • Product typeBattery
  • Keeps system time and BIOS settings during power loss
  • 0 V 200 mAh lithium cell delivers reliable backup power
  • Fits Casio IT3000, IT3000m53e and IT3100 handhelds
  • Compact 20.95 x 20.13 x 3.54 mm coin fits tight compartments
  • Brand-new OEM-compatible unit ready for immediate installation

Direct replacement for Casio handhelds

This Cameron & Co DS-CS-IT3000BU is a 3.0V lithium coin cell rated at 200mAh. It serves as the CMOS backup battery for Casio IT3000, IT3000m53e and IT3100 devices. The green cell restores date, time and BIOS settings when the original battery fails.

Verify the exact model and connector orientation

Check that your unit is an IT3000, IT3000m53e or IT3100 before ordering. Confirm the existing battery carries the part number CS-IT3000BU. The replacement is non-rechargeable, so the device must not attempt to charge the cell. Ensure the polarity matches the socket layout on the mainboard.

Compact coin cell with stable voltage output

The lithium chemistry delivers a steady 3.0V across its 0.60Wh capacity. At 20.95 x 20.13 x 3.54 mm it fits the standard coin-cell footprint used in the target Casio models. The green housing aids visual identification during installation. The 100% OEM-compatible build provides reliable retention of CMOS data through power cycles.

How it compares

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

Price $10.99
Cheaper than about 91% of the 27,790 comparable items (median $30.99).

Specifications

Product
Brand nameCameron Sino
Model nameDS-CS-IT3000BU
Product typeBattery

Questions about this item

Does the DS-CS-IT3000BU arrive as a single coin cell or do I need to buy a holder separately?

The item is supplied as one 3.0 V 200 mAh lithium coin cell ready to fit the Casio IT3000, IT3000m53e or IT3100; no holder or cable is included.

My Casio IT3000m53e needs a green CMOS battery — is this the exact colour match?

Yes, the DS-CS-IT3000BU is green and listed as compatible with the IT3000m53e, IT3000 and IT3100 models.

Will the 0.60 Wh capacity keep the real-time clock running for years in an IT3100?

At 3.0 V and 200 mAh the cell provides 0.60 Wh, which typically powers a CMOS clock for several years in these Casio handhelds.

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