I am using Artemis Nano and when I attach a battery to the battery terminal, the Nano does not power up. A multimeter shows voltage on the leads going into the board. I am using a 3.7 v Li-ion battery. I am running the simple blink example program from the Arduino IDE. When attached to the usb port, the program runs as expected. The board has red power led and blinking blue led. When using only battery power, neither led lights up. I feel like I am missing something simple but fail to find it in any documentation.