The power-bank device.
I got one, it looks exactly like the one mentioned here....
http://www.ozpolitic.com/forum/YaBB.pl?num=1566027681/11#11When it arrived, i put it on mains charge [as per instructions].
It was on a charge for about 3 hours, but i'm pretty sure it was already fully charged up, when it came.
[going by the LCD indicator.]
Today.....
Deep, deep in the woods, the temp here was below 0 C this morning, and i was expecting a 'groan' as my 7 year old battery turned over the motor of my diesel ute.
So i decided to do the start, with aid from the power-bank device.
And i was pleasantly surprised.
My ute motor was turned over strongly, and it started like it was the middle of a warm day.
It was cold! here, but there was no hesitation in strongly turning over the motor.
It was not a true test of this power-bank, ....which would be to start my diesel ute with a dead [or too weak to start] battery.
I can't work one thing out though.
Afterwards, and still now, the LCD indicator on the the power-bank, still shows a 100% charge.
After the start, was expecting the LCD indicator on the the power-bank, to at least be showing less than 100% ?
Anyway, it looks good.