Things to note when charging a new solar battery for the first time
240KW/400KW industrial rooftop - commercial rooftop - home rooftop, solar power generation system.
There is no reason that charging a Li-ion battery up the first time before playing with your new device, would in any way extend the life of the device or the battery. The simple fact is properly stored lithium-ion batteries are charged to about 50%, and lose some of that charge (depending) while sitting around in the package, or being shipped.