Hi,
how do you charge the battery connected to a Xadow Ble + GSM module? Is there a lipo circuit charger on-board? Is it possible to charge it using the USB port?
Hi, thanos,
The Xadow GSM+BLE itself has a built-in charging circuit, which allows you to charging the battery using the USB port.
Hi Chao,
thanx for the response. Now it’s clear. 
That was an info that is missing from the wiki. Maybe add it so that it is more obvious
Is it possible to use a bigger battery with this charging circuit? If not how much standby time does the default one provides?
Yes absolutely! The power consumption depends on how you use the board,
20mW ===>> standby(no radio)
30mW ===>> standby(GSM)
52mW ===>> standby(BT)
You can use a bigger battery which can supply a voltage level of 3.3 ~ 4.2V(no SIM)/3.5 ~ 4.2V(with SIM)
Great! Thanx for the info