Anybody use a NOCO Boost?

I have a couple of them they work good but if you leave them in a cold vehicle you might as well not have it they loose power bad in the cold. My Schumacher 1200 amp booster air compressor power supply works better. I do plug it in after every use for about a day then unplug till next time I need it.

i've carried one in our motorhome every time we traveled, never had to use it, but it was there if needed, the same one was used on the farm, i kept it plugged in when ever not being used, it lasted about 4 years. it was one of the first ones on the market back then, and i think i paid about $69.00 for it at Sam's club. i currently do not have one, but prolly will pick one up this summer. our Sheriff's dept had one, batteries were always going dead in cruisers, they'd leave the puters on in them. they left it plugged in all the time too, so far it's still going...going on 7-8 years. it's a larger one but don't recall the name of it.