Pinebook Pro not turn

[carbo29]

Since  from your OP, you have had the back off, measure the battery voltage
It should be in the range 3.6V to 4.2V, it likely will be lower
Gently charge battery, 100ma @4.2V until battery reaches 3.6+V
Maybe a old phone charger (5V) and 5-10 ohm resistor
Old in that it has low ma output, the specs are always on the label
Use the cable off, say a dead mouse, the wires inside are always colour coded,
i've never seen them wrong, but you might check
OR
try the 1/2 hour charge, unplug,replug another 1/2 hour and so on
The timer resets with each power supply activation
This, BTW is normal for lithium chargers

Grazie, ora proverò anche questa cosa.
Il problema è che non si accende neanche escludendo la batteria e collegando i 2 cavi che sono all'interno del case e poi collegandolo al barilotto.

Thanks, now I'll try this too. The problem is that it does not turn on even excluding the battery and connecting the 2 cables that are inside the case and then connecting it to the barrel.