Flex 2 won't charge

[Aryanxo]

Just got a new Fitbit flex 2 and it isn't charging at all. Whenever it's synced it shows battery empty. This is the second time this is happening when I purchased a flex 2 , does anyone know how to fix this?( I've already tried restarting it multiple times and nothing is working)

Moderator Edit: Clarified subject

[Odyssey13]

Hi @Aryanxo  here is an article on what to do when you have trouble syncing - click to read. The Flex 2 was retired over two years ago. Could be that the Flex 2 just can't revive. Not sure where you got it, but I'd probably see about returning it.

[BertKo]

Got the same issue with a brand new device. After the update it was impossible to charge it. 
After contacting the support the only option was to make a DoD return. 

[LeVuong]

Why isn't my Fitbit device's battery charging?

To maximize your Fitbit device's battery life, see the tips in Can I extend my Fitbit device's battery life?

To confirm your device is charging, see How do I charge my Fitbit device?

If your battery stopped charging, try the solutions below.

Problem Solution

The pins on the device or charging cable are dirty.	Dust and debris can accumulate over time. Clean the charging contacts on the back of your device and the pins on your charging cable using the instructions in How do I clean my Fitbit device?
The USB port or outlet is faulty.	Try a different USB port or a UL-certified wall charger.
The device isn’t connected securely to the charging cable, or you're using a charging cable that came with a difference device or from another retailer.	Make sure you use the charging cable that came with your device, as most cables aren't compatible with other devices. Check the alignment and try reconnecting your device to the charging cable. For more information, see How do I charge my Fitbit device?
The device isn't working as expected.	Restart your device. For more information, see How do I restart my Fitbit device?
The device is wet.	Thoroughly dry your device before charging it.
The error "insufficient power source" appears on your device's screen.	Remove other devices plugged in to your power source, or plug your device in to another source.
Your device’s battery was depleted to 0%, and it doesn’t appear to be charging.	Leave your device plugged in to the charging cable for at least 30 minutes.
Your device's battery won't charge after you remove it from the box.	Confirm that you removed the plastic protective cover from the back of the device.
You haven't used the device for several months, and it won't turn on.	Leave your device plugged in to the charging cable for at least 30 minutes.

[Rich_Laue]

Another reason your Flex may not be charging, may be that the battery is 5+ years old. Long past the expected life of a lithium battery.