 The USB LiPo battery charger. It charges in three stages. It does a preconditioning, it does a fast charge, and then it does a trickle charge. It tells us that we have power with a little red LED here, and then this is indicator that is yellow right now that tells me this is charging. And then when it gets to a full charge and it's just doing the trickle, that LED turns off and we instead get the done or green LED to light up. So if I have battery plugged in, you'll see that immediately powers up the device. Now, if I want to start charging this, I can just plug in and it won't interrupt anything. You can see the power still running over here. There's no hiccups there. And now we are driving this either off of available battery power or over the USB. It's never going to never going to turn that device off. The USB LiPo battery charger.