Hey was out on picnic when my battery died down (courtesy over tweeting when my cousin bro was talking of hopw you can charge without electricity and stuff though I didn’t try it , but this is interesting if it works in an emergency especially.
remove the back of your mobile cover
Take out the battery
Take two to three fresh leaves of peepal tree
Touch the stub of these leaves on your mobile battery terminal for a minute
Clean the mobile battery terminal with the soft cloth
Put your battery again in your mobile and switch it on
my bro was telling this can be tried with a new currency note of 10 rupees too don’t know if it really works. But if it does work don’t you think it is creative innovative and interesting ?
But well carrying extra fully charged battery is a better option I guess or a solar charger !