Check the listing for details. Battery Upgrade for Nest 2nd & 3rd Generation Thermostat - 630 mAh. Color: Yellow, Condition: New. Listed at 21.00 USD. Battery Upgrade for Nest 2nd & 3rd Generation Thermostat - 630 mAh Battery Upgrade for Nest 2nd & 3rd Generation Learning Thermostat. The Artisan Power battery is rated 630 mAh which is about 10% higher than the original Nest batteries translating to greater battery life of the lifetime of the battery. Fully replaces and out preforms battery part number TL284443, T3007ES, T3008US, T4000ES, and A0013. A complimentary screwdriver is included for disassembly and assembly with the Next Thermostat. The back of the battery has adhesive so it full firmly stay inserted into the device. Product Details BrandArtisan PowerColorYellowManufacturerArtisan Power Replacement Battery for Nest 2nd & 3rd Generation Learning ThermostatFully replaces and out preforms TL284443, T3007ES, T3008US, T4000ES, and A0013Complimentary screwdriver for disassembly - the back of the battery has adhesiveLong Lasting Battery: The 630 mAh battery is rated 10% higher than the original batteryManufactured by Artisan Power, a leader in premium quality replacement battery packs Check out my other items. - Powered by