A:AnswerSounds like yours is defective. Check to see if cord is tight in charger and device first. If it still gives you issue, I would return for exchange.
A:AnswerIt lasted me about 1 year and a half. I did use it often during harsh weather. From 120 degrees down to 15. So all in all it held its own considering the circumstances. It charges my phone about 1 to 1 and a half charge, depends if I'm using it while charging. You can charge anything with it as long as you have the USB cable for it.
A:AnswerI think it would last well over a month. I charged mine after purchasing it and have charged my phone twice and there is still enough battery left (2 out of 4 LED lights) to charge the phone again and this is over a 3 week period.
A:AnswerIt comes with LED indicator lights that provide at a glance battery information. Fully charge your portable battery before using it for the first time.
A:AnswerNever had to use it for that type of application, but I can tell you that it is real reliable and holds energy well. But in theory, if the heated jacket has a usb plug, I’m sure it would/ should work. Transfer of energy only needs a pathway. Hope this helps.