I'd concur with people that don't like these type of lights. The problem for me isn't the amount of time holding the charge. The problem is the "ever ready" time. If these lights are left off, stored away, they still get discharged. After it's fully discharge they take awhile to crank, at least more than a full minute of cranking to get the LEDs to light up again.
That's not exactly good when you want some light now.
It's no improvement from the older versions, the filament bulb types.