Thank you for your answer!
Very aware of the slow charging… somehow I thought it’s 100mA. 
My sketch takes about 50mA, that explains the battery behavior.
Already ordered charger modules.
Thanks again!
Thank you for your answer!
Very aware of the slow charging… somehow I thought it’s 100mA.
My sketch takes about 50mA, that explains the battery behavior.
Already ordered charger modules.
Thanks again!