Hi, when powering the K5 via the micro-USB (under the cover) it works without flaws. Now, as I use it on a cargo bicycle I need to power it via a powerbank. As it is needs to be waterproof I can't use the USB port but cut the wires. However, when powering up it goes into an endless loop it somehow does not get engouh Amp - it only works with a USB bucket booster where I manually. Any ideas how to fix that?