W = VI
W = 12 x 7
W = 84
5W pannel ekakin charge karanawanam
7 A = 84 /5
7A = 16.5 hours
solar pannel ekaka efficiency eka 40 % ( depends on the strength of the sun light)
ehema unoth battery eka fully charge wenna 41.25 hours yanawa (day time).
20 watt panel ekak nam hodai.
The main reason for this is the regulations of the central bank. Their are some regulations which doesn't allow free flow of foreign currency to a personnel account. these regulations are for prevent money laundering. now it is time to revise.