Bake Bean Lid Rechargeable Battery

After having breakfast, I was about to throw the bake bean tin can lid into the bin (trash). Then I thought 'hold about', that lid can be made into a rechargeable battery.

I also wanted to see if a hand cranked generator could charge it..

Bake bean tin lid

Paper towel

PVA glue

Salt

Aluminum foil

Water

Hand Crank generator

Fold some paper kitchen towel in half.

Place the lid on top of the towel and almost cut around it, just leaving it joined where it was folded over.

Open up the cut paper towel, squirt on some PVA white glue and spread it over both halves.

Sandwich the lid between the two glued halves.

Sprinkle on some table salt to the front and the back on the of the sandwiched lid.

The previously placed glue will probably have come through the paper towel slightly and absorb some of the salt.

Wrap the salted, paper-ed lid in aluminium foil.

Avoid having the foil touch the lids puller.

Wet the paper towel by running the lid under the water tap for a moment or two.

The battery can be charged from a hand crank, solar panel or battery pack.

Cranking the hand crank for 2 minutes will run a garden light for 4 minutes. After charging,
you will need to use the power within the next 30 minutes or so after charging.

The battery can also power a small motor.

While the 'Bake Bean Lid' battery can power a small light or motor for a short time, perhaps it's best use is in smoothing an electricity flow, such as from a small generator - as demonstrated above.