Top critical review
Well, it looks good, but failed me in a cold snap.
December 30, 2017
I believe this is is a generally good product, the wealth of reviews here attest to that. But after a few months in the trunk, I finally had need and was left walking to get a jump from someone else's jump pack.
My car sat for a week in cold temps at Chicago Airport, averaging between -15 and 20 degrees Fahrenheit (with wind), so I anticipated problems but knew I had this tool. (yay!)
Turned on my Rugged Geek, still had 91% charge from the initial charge months ago, cool.
Bragged to my wife as I set up in the cold.
Plug in the connector, very tight but went in. Hooked it up to the car, positive terminal and chassis ground.
Here's the fun. My battery was 5 degrees (ambient air temps) and dead. This rugged geek charger never would "detect" the polarization of the car to pass the safety check, so it would never allow it to energize and jump the car.
By now I've messed with it 10 times, wiggled the connections, removed and replugged in (heard a crack), and was frozen solid.
So I walked back to the parking garage where the maintenance guy had a traditional jumper and got me going in 10 seconds.
My car is a 2.5 liter 5 cylinder, so it shouldn't have been a problem.
It is a newer car with some computers, but I don't believe that alone would have been a limitation for what this claims.
Now I have this, it's failed me 1 for 1, do I trust it again? Do I pick up a Stanley jumper for road trips? I'm pretty gun shy about trusting this again, guess I'm glad I keep my AAA roadside assistance paid up, but in the bitter Midwest cold waiting an hour for a tow truck would have been dangerous.
Perhaps it's a fluke, maybe I did something wrong, but I'm a pretty tech savvy person and this is a straightforward task.
Your mileage may vary