Nest Thermostat E Battery Replacement Repair Guide

Difficulty

Moderate

Steps

3

Time Required

                          10 - 20 minutes            

Sections

1

• Battery
• 3 steps

Flags

2

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What you need

Step 1

              Battery               

• Remove the thermostat from the baseplate
• Unscrew 4 screws on the back
• Picture by @justlv

Remove the thermostat from the baseplate

Unscrew 4 screws on the back

Picture by @justlv

1024

Step 2

              The Twist               

• To remove the cover turn it counter clockwise and pull. The cover is held by clips, but it should come off easily after the turn
• Detach the main PCB
• Remove 4 more screws
• Disconnect the display cable
• Pull the main PCB out of the device

To remove the cover turn it counter clockwise and pull. The cover is held by clips, but it should come off easily after the turn

Detach the main PCB

Remove 4 more screws

Disconnect the display cable

Pull the main PCB out of the device

Step 3

              Voila               

• Battery type is 284449, meaning the battery is 2.8mm thick and 44mm by 49mm long/wide. Capacity 2.1Wh
• Those are tricky to find, but any 2.8mm battery should fit if doesn’t exceed the size. For example a slightly shorter TL284443 fits perfectly
• YEEY!! We love pull tabs! Just pull them down to detach the battery
• Here is the battery connector. To disconnect the battery simply pull the connector “up”
• The battery connector is very fragile, try to take extra care while disconnecting the old battery

Battery type is 284449, meaning the battery is 2.8mm thick and 44mm by 49mm long/wide. Capacity 2.1Wh

Those are tricky to find, but any 2.8mm battery should fit if doesn’t exceed the size. For example a slightly shorter TL284443 fits perfectly

YEEY!! We love pull tabs! Just pull them down to detach the battery

Here is the battery connector. To disconnect the battery simply pull the connector “up”

The battery connector is very fragile, try to take extra care while disconnecting the old battery

To reassemble your device, follow these instructions in reverse order.

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Bigh - Sep 25, 2021

Reply

Chris Broome - Jan 22, 2022

That is great advise, thank you! I’ve seen too many underpowered (1.4Wh) batteries sold with poor ratings. It’s hard to find a quality battery.

Chris Broome - Jan 22, 2022

Reply

Thank you for this article. I used it to take out my Nest battery, which I thought was “unserviceable”. The step-by-step instructions were very helpful.