I have added a battery to my BBB, following this https://www.element14.com/community/community/designcenter/single-board-computers/next-gen_beaglebone/blog/2013/08/10/bbb--rechargeable-on-board-battery-system.
The board works on battery power for about 2.5 hours, but it doesn’t charge the battery. What do I need to do to make it charge? It seems the power the battery gets for charging is les than it needs. I use a BBB and the Olimex battery from the link.