lygra, I did what you said and the battery seems to stay charged after removal from the nano. Since I have no response from Sparkfun, the supplier, I suspect I am on my own. I did download the schematic and there seems to be a charge controller ahead of the battery both on the schematic and on the board. Someone here or elsewhere said he thought little of the Seeed charge controller and was going to use a different type. Any ideas? I do NOT know what the problem is and only have a vague idea how to track it down. Any other ideas?
Karl