Nest doorbell battery change?

[Mirenshah83]

Hello,

considering the nest doorbell battery and wanted to know how it can be charged? Does it have interchangeable batteries so can plug in a charged battery and place drained one on charge so ready to swap when needed. 
I cannot seem to find this info online. Bit pointless if I have to charge the whole unit which means having to lose the doorbell and motion notifications while it’s charging. 
thanks

[NullMind]

It does NOT have a removable battery, you have to remove the camera from it's mount with the provided tool and charge it

[Mirenshah83]

Thanks for confirming. Definitely won’t be buying this if the whole unit has to be removed and charged for 5 hours.