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Small black rectangular Li-Polymer battery with flat profile

Cameron & Co

Cameron & Co DS-CS-NLT100SL Li-Polymer battery 3.7V 200mAh

SKU CH-V3Y3-WS8XJ

Replacement Li-Polymer battery for Nest Learning Thermostat 1st Generation, 3.7V 200mAh capacity

  • TypeHome Electronics Battery
  • Li-Polymer chemistry keeps the thermostat running reliably
  • 7 V 200 mAh capacity matches the original specification
  • Fits Nest Learning Thermostat 1st Generation T100577
  • Slim 43.90 x 34.20 x 3.10 mm profile slides into the existing compartment
  • Brand-new OEM-compatible cell restores full smart-home operation

Drop-in replacement for Nest Learning Thermostat

This lithium-polymer cell is built to fit the Nest Learning Thermostat 1st Generation T100577. It supplies 3.7 V and 200 mAh for 0.74 Wh of energy. The pack measures 43.90 x 34.20 x 3.10 mm and comes in black. It is a direct OEM-compatible spare for part numbers TL363844 and CS-NLT100SL.

Verify the exact thermostat model

Confirm that your unit is the 1st Generation Learning Thermostat carrying model number T100577. Check that the existing battery carries part number TL363844 or CS-NLT100SL so the connector and polarity match. The replacement is a single cell without a built-in protection circuit, so the thermostat’s own management must handle charging. Ensure the 43.90 x 34.20 x 3.10 mm footprint clears the internal cavity.

Single cell restores original runtime without

The pack contains one 3.7 V 200 mAh lithium-polymer cell and no additional electronics, cables or mounting brackets. Installing it simply replaces the depleted original and returns the thermostat to its factory battery life. No firmware update, configuration tool or external charger is required. The black housing matches the original appearance inside the device.

Highlights

  • Li-Polymer chemistry keeps the thermostat running reliably
  • 7 V 200 mAh capacity matches the original specification
  • Fits Nest Learning Thermostat 1st Generation T100577
  • Slim 43.90 x 34.20 x 3.10 mm profile slides into the existing compartment
  • Brand-new OEM-compatible cell restores full smart-home operation

Specifications

BrandCameron Sino
ModelDS-CS-NLT100SL
TypeHome Electronics Battery

Questions about this item

Does the package contain only the battery or are tools and adhesive included?

The box holds one black Li-Polymer cell measuring 43.90 x 34.20 x 3.10 mm; no tools, adhesive strips or connectors are supplied.

The listing shows a single 3.7 V 200 mAh version — is there any reason to choose a different capacity?

Only the 0.2 Ah / 0.74 Wh variant is offered; it matches the original TL363844 specification for the 1st Generation T100577 thermostat.

What does the 200 mAh rating actually deliver once the cell is fitted in the thermostat?

It restores the original 3.7 V 0.74 Wh capacity, powering the 1st Generation learning thermostat for the same runtime as the factory cell.

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