BLE not work when not connected to USB

Hardware Arduino 101
1

Hello Arduino
I'm working on some project with arduino101 to use BLE
but when I try to use with external power supply
BLE is not working

I mean, when i connect arduino101 to computer via USB
BLE is working so i can connect to nRF tool box in android

But when i supply power with 9V battery, BLE is not working
what is the problem here?

If u guys knows the problem please give me an advice

2

Are you sure the board is working when you power it from your battery? how exactly is the battery hooked up? Does the battery have charge?

3

enyquist:
Are you sure the board is working when you power it from your battery? how exactly is the battery hooked up? Does the battery have charge?

I could see the LED turned on when battery is connected
I use 9V battery

Just no signal for BLE ( nRF toolbox cannot find my arduino )
I already checked some IO function is working when just connected to battery

So it looks like arduino works fine but some BLE problem, I have

4

OK. Still two unanswered questions:

  1. how is the battery hooked up (draw a diagram, or take a photo, if you have to)
  2. Are you sure the battery has full charge? i.e. is it a new battery? (just because it can light an LED, does not mean it can run BLE- they have very different power requirements).
5