“I had a free Harklla heat power bank with the Harklla waste coat, the usb connected seemed loose and would disconnect, if I had mid or high power selected on the jacket, it would switch back to the low, so I Brough I new power back, and has a tighter connection into the battery pack, But to make it work I need to slowly pull the USB connection out of the power back, once the light comes on the jacket, the lightest touch makes the jacket light flicker or go off.
I ended up getting a battery pack from eBay, to rule out the connection from the jacket it’s self. And it works perfectly.
The Harklla power bank dose charge my phone and will be used for this only. But for the purpose I intended the use for and from the same branded company dose not work has it should.
But the Harklla jacket is excellent and keeps me warm in the coldest mornings while early morning Landscape photography and no bulky clothes, and now can rely on it keeping the temp I set it to woop woop”
“It’s a power bank like any other, that said it’s solid so will take a bit of a battering and it fits perfectly into the power bank pocket of the heat jacket so no need to have heavy items in your pockets. I like it!”
