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Small rectangular lithium-polymer battery with connector, dark finish

Cameron Sino Replacement Battery for Nest Thermostat 380mAh 3.7V

SKU CH-63AA-8ENKJ

Replacement lithium-polymer battery restores power to compatible Nest thermostats with 380 mAh capacity and 3.7 V output

  • Weight3
  • Compatible with Nest Learning Thermostat 2nd and 3rd Generation models
  • 380 mAh capacity at 3.7 V delivers 1.41 Wh of energy
  • Built-in protection against overcharge, over-discharge, over-voltage and short circuit
  • Certified to ISO 9001, RoHS and CE standards
  • Compact 48.60 x 44.10 x 2.90 mm design weighs 11.0 g

Direct Replacement Battery

This Cameron Sino battery replaces the original cell in Nest Learning Thermostat second and third generation models A0013, T3007ES, T3008US, T4000ES and Thermostat E. It matches the factory part numbers GB-S10-284449-0100 and TL284443. The lithium polymer pack is fully decoded so the thermostat recognises it immediately.

Low Power Steady Operation

Rated at 3.7 volts and 380 milliampere-hours for 1.41 watt-hours, the cell fits within the thermostat's slim 48.60 by 44.10 by 2.90 millimetre cavity and weighs 11.0 grams. Normal thermostat cycling draws very little current, so the pack runs cool and silent without measurable self-heating.

Sustained Load Behaviour

During extended Wi-Fi sync or display activity the protection circuit guards against overcharge, over-discharge, over-voltage and short circuit. The chemistry reaches full capacity after two or three complete charge cycles. Do not disassemble, expose to fire or water, or store above 60 degrees Celsius.

Highlights

  • Compatible with Nest Learning Thermostat 2nd and 3rd Generation models
  • 380 mAh capacity at 3.7 V delivers 1.41 Wh of energy
  • Built-in protection against overcharge, over-discharge, over-voltage and short circuit
  • Certified to ISO 9001, RoHS and CE standards
  • Compact 48.60 x 44.10 x 2.90 mm design weighs 11.0 g

Specifications

BrandCameron Sino
ModelA0013, Learning Thermostat 2nd Genera, Learning Thermostat 3rd Gen, Learning Thermostat 3rd Genera, T3007ES, T3008US, T4000ES, Thermostat E
Part NumberGB-S10-284449-0100, TL284443
Weight3

Questions about this item

How do I install this battery in my Nest Learning Thermostat and what is the step people often miss?

Open the thermostat, disconnect the old pack, connect the new 48.60 x 44.10 x 2.90 mm lithium polymer cell, and ensure the connector clicks fully into place — a loose connection is the most common mistake.

What maintenance will this 380mAh 3.7V battery need over time?

No routine maintenance is required; after 2 or 3 full charge and discharge cycles the pack reaches its best capacity and the built-in protection circuit handles overcharge, over-discharge and short-circuit safety.

What is the first limit I will hit if the thermostat runs continuously on this replacement cell?

The 1.41 Wh capacity sets the runtime ceiling, and the cell must not be stored or operated above 60 °C (140 °F) or the protection circuit will shut it down.

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