A few weeks ago at work, a nice gentleman gave me what my daughter told me was a power-pack.
The paperwork (it's small, slightly larger than a tube of lipstick), said to fully charge, fully drain, and repeat.
The first time it took almost 6 hours to fully charge.
I kept charging my PVs on it; give or take, it would charge for 4-6 hours. There was no noise or anything once it was 'dead'; I would just look and the green charging wasn't on.
Recharged (this time only about 2-3 hours), same with discharging.
Well, my laptop was lowish, so I decided to see if the power-pack could charge it.
As SOON as I put the USB side onto my laptop, the power-pack went all red (no charge).
I put power pack to charge, took about an hour (again, I had fully charged it about a week ago & not used it at all), and again, tried to charge my laptop, no go.
I was just looking at Amazon & Walmart, with ONE exception, they mention charging phones, i-phones & tablets. There was only one that mentioned laptop charging, and it wasn't cheap.
Is this correct, or am I doing something wrong? It's again charging my PVs w/no problem.
Patti