Configured for the OpenLogArtemis with the LPS28DFW pressure sensor.
The charging circuit is designed for Lithium-Ion batteries and provides 450 mA at 3.7 V. That means that the capacity of the battery should be at least 450 mAh. See OpenLog power for more information.
The VIN pin is connected to 5V USB. This means that if providing power on VIN (e.g. through an external battery pack): all other power sources must be connected, including USB.