Have you thought about buying solar panels to hook them on your bike rack to charge your phones and electronic devices while riding? My friend and I have that setup on our bikes and we carry portable battery banks with us in case we don’t come across power outlets in overnight towns. We have seen people use solar panels to charge their E-bikes while riding. In pass-through towns, there are some vendors that provide outlets and battery cables to charge your phones for free while you shop and dine.