With the Fruit-Power Battery, the two metals are zinc and copper. The zinc is in the galvanization on the nails, and the pennies are actually copper-plated zinc. The acid comes from the citric acid inside each lemon. The two metal components are electrodes, the parts of a battery where electrical current enters and leaves the battery. I know on newer phones, running iOS 11 or higher, the way to check battery health is: Settings Battery Battery Health. I don't know if the same feature is available on iPhone 5s. For the most accurate test, schedule an appointment at your Apple Store Genius Bar and they can run diagnostics on your phone for you. Jul 23, 2020 How to Check Your Laptop Battery Health in Windows 10. The Windows 10 Battery Report feature breaks down whether your battery is still kicking or on its last legs.
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Experiment: To make a working battery from some fruit.
Materials:
You will need:
4 fresh lemons (though in the end, we used 8!) A 5 cent coin for each lemon A galvanised nail for each lemon (roofing nails will do) Two lengths of wire per lemon One L.E.D.
Method:
Fruit Juice Battery Health 2 4 1 3 Quick Math
1) Roll and squeeze the lemons until they are 'squishy'. It is important that the juice is quite free, as it acts as our electrolyte.
Best luts. 2) Cut two slots in each lemon and put one 5 cent coin and one nail in each.
3) Connect a piece of wire to each and then connect the lemons together - 5c/nail; 5c/nail, etc
4) Then connect a wire to the coin and to the plus terminal of the LED. Connect a wire from the nail to the minus terminal of the LED.
Result: With these 'batteries' you will produce a faint glow from the LED.
Fruit Juice Battery Health 2 4 1 3
Conclusion: The batteries consist of two metals - copper and zinc (the galvanised nails). An electrolyte (the lemon juice) connects the two together and the LED lights up. One lemon produces about 1 volt.