The stronger a light shines the darker are the shadows around it.
'Idhuvum Kadandhu Pogum "
Even this challenging situation would ease
The batteries are generally harmed due to wrong charging time.
Normally a battery should be charged as soon as it comes down to 5-10 % and should be charged to about 90-95 % value. Operating batteries beyond these limits reduces their life span.
Knowledge is power.
I have used different power banks and felt that they are quite useful and handy when needed.