I’ll echo Doug’s opinion.

I’m wary of things that crank unless they’re near-mil spec construction.

I’ve broken the crank mechanism on two crank-for-power radio/flashlight combos from different manufacturers (for earthquake kits in California) that were used only sporadically. Knowing they were cheaply made, I treated them with kid gloves the couple of times I used them, but the crank mechanism still broke.

I confess this may be an unfair indictment of cranking flashlights (and radios) in general, but I’ve shifted my emergency/back-up flashlights over to decent quality 1 watt LEDs that use AA batteries backed up with an ample supply of 10-year lithium AA batteries. Likewise, my small emergency radios use AA batteries. I feel a bit more confident not relying on a mechanical device.

For everyday use, its rechargeable 2500 mah AA’s for flashlights and small radios. Over time, it’s proven to be cost-effective for me.