It’s not the volts you need to crank, it’s the amps.
Try adding a shot of espresso to you Red Bull. Maybe that will help.
Thanks ArGee. Have always wondered why Better Half has more energy than me. I checked the setting when she was recharging and she had the amp side turned up to high. The setting was on volts when I went to recharge. Am ready for some amperage and maybe, just maybe, soon I too will have a shopping gear. Better Half has been able to outrun me in shopping gear. Will be up for a race now.