Runner 2 battery problem
I bought a runner's watch from a (not very honest) boy 2.
he connects to the PC, has the latest update and connects via Bluetooth to the phone.
the problem is that the battery does not work.
after a night of charging, the disconnection from the socket and after 1 minute the battery is almost dead 1/3.
after a short check from info and it's 2/3 to then immediately return to 1/3.
night off, cardio off, gps off, all off.
as soon as I turn on the gos with a training program, it immediately tells me that the battery is empty and turns off soon after.
do you think is the battery that does not hold the charge or is it a software problem?
can the battery be replaced, and where can I find it?