Savior Heat - motorcycle heated gloves, an honest review after a cold day ride. 

I don't think I will ride much more till spring ;) I much prefer Italian heat over British winter ;)

I didn't give the price as it is constantly changing, especially before Black Friday. The link with the price is in the description.

I need to look at the manual but I think it was 3.5h on the maximum setting. You can buy those batteries, yes. I'll check it all later at home and will send you more info

So here is the long answer - claimed battery life is 2-2.5h on max, up to 6.5h on low settings. Mine were turned on on max for more than 2h and still working so I can confirm more or less. The battery is 7.4v 2200mAh and you have plenty of those on Amazon/eBay, you also have a bigger capacity version amzn.to/467ys0w