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Black rectangular Li-Polymer battery with two wire leads

Cameron & Co

Cameron & Co DS-CS-NLT300SL 3.7 V 450 mAh Li-Polymer battery for Nest Learning Thermostat T200377 T200577

SKU CH-D9DS-DQJ7N

Replacement Li-Polymer cell (3.7 V, 450 mAh) fits Nest Learning Thermostat models T200377, T200477, T200577, T200777 and T200877

  • TypeHome Electronics Battery
  • 7 V 450 mAh capacity powers Nest Learning Thermostat
  • Li-Polymer chemistry delivers 1.67 Wh in slim 2.76 mm profile
  • Direct replacement for part numbers 3701-0001-01 and P11GY1-01-S01
  • Fits T200377 T200477 T200577 T200777 T200877 models
  • Brand new Cameron Sino cell ensures 100 % OEM compatibility

Replacement battery for Nest thermostats

This lithium-polymer cell replaces the original battery in Nest Learning Thermostat models T200377, T200477, T200577, T200777 and T200877. It matches part numbers 3701-0001-01 and P11GY1-01-S01 for direct compatibility.

3.7 V 450 mAh capacity and headroom

The pack delivers 1.67 Wh at 3.7 V, providing enough reserve for normal thermostat operation and schedule retention. It will not support devices that demand higher voltage or substantially greater capacity than 450 mAh.

Supplied as a single black cell

One battery is included in the package, ready to install without extra cables, tools or software. Buyers needing a multi-pack or an external charger will have to source those separately.

Highlights

  • 7 V 450 mAh capacity powers Nest Learning Thermostat
  • Li-Polymer chemistry delivers 1.67 Wh in slim 2.76 mm profile
  • Direct replacement for part numbers 3701-0001-01 and P11GY1-01-S01
  • Fits T200377 T200477 T200577 T200777 T200877 models
  • Brand new Cameron Sino cell ensures 100 % OEM compatibility

Specifications

BrandCameron Sino
ModelDS-CS-NLT300SL
TypeHome Electronics Battery

Questions about this item

Will the DS-CS-NLT300SL fit alongside the original wiring in a Nest Learning Thermostat T200577?

Yes, the 48.24 x 42.78 x 2.76 mm cell matches the factory battery footprint for T200377, T200477, T200577, T200777 and T200877 models, so existing wiring routes stay unchanged.

How can I confirm the 3.7 V 450 mAh Li-Polymer pack is charging correctly after installation?

The thermostat display will show a charging bolt icon within minutes and reach full charge indication once the internal controller reports 1.67 Wh capacity restored.

What comes in the box and do I need any extra connectors for the T200377?

One black DS-CS-NLT300SL battery is supplied; it uses the same 3701-0001-01 / P11GY1-01-S01 connector as the original, so no separate cable or adapter is required.

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