IMAZING IM27 PORTABLE JUMP STARTER

So I am a Auto/Diesel Technician 45 years . I own a Camaro ZL1 that goes to bed during the winter . I usually start the car once a month to maintain the battery .
So with this said I had family and weather issues which prevented me from doing this last month . To start off the battery was to weak to crank the engine but attempted to do so . So I decided would for go charging the battery the old fashion way and use the IM.27 pack THAT I RECEIVED AS A GIFT .
My Battery for the car is in my trunk which is not easy to get at . However I have jump points in the engine bay . I did a little test and connected the pack to a ground on the body I could not get the green light but when I connected to the dedicated ground to the battery the green light came on . Now I have read some of the complaints here and I feel I can give a honest opinion as as Stated I received this as a gift .
I believe this unit if properly charged and the car battery has a reasonable partial charge it will start the car if the unit does not see enough or no voltage from the car battery IT WILL NOT WORK ! On this statement there should be a override to tell the unit the car battery is completely dead and or a electronic amp flow regulator to determine if there is a dead short to the car or the battery is completely drained . I have a older jump pack that has a lead acid battery that WILL JUMP START A DEAD BATTERY ! I just think it should be considered 🤔.

I really would have liked to leave a good review, but the jump starter that I received does not work. It has been over a month and I still have not received a refund yet, and they are making it difficult to process one. I do not recommend.

When plugged in, it shows charged. But when I go to use it, the LED light won't even come on. And will not work. Am I missing something?

Purchased this end of 2022. I needed to use it the beginning of this year and it will not start my car. I drive a 2018 Nissan Rogue. My battery is fairly new. My husband used his, which is a different brand and it started my car right up.

This product was super simple to use and is great in a pinch! Worth every penny!