[...] and getting realy exited (its my current and only goal)
Nice to hear you've got your priorities sorted
irecently got this ''solar charger prenium'' and it has abuilt in battery and advanced circut protection and regulator.
Just to keep you pointed towards your goal a little longer... In case you are counting on making a solar 'bot, here's the lowdown on these chargers.
The solar panel charges the internal lithium cell slowly and when fully charged, the lithium cell will be able to convert this to 5.6V for charging.
It's not a well regulated 5.0V output, but a 5.6
V output and I don't think regulation is all that.(It certainly isn't in the one I have - a Chinese make designed to open to expose the dual solar panel).
But... The laws of thermodynamics still applies, so the lithium cell (of 700mAh capacity) converted to 5V will be 700mAh * 3.8 / 5.6 = 475mAh.
And since the voltage of a lithium cell declines during use, a more realistic calculation would be:
700mAh * 3.4 / 5 = 425mAh
One thing is clear, they mix mA with mAh and that won't work.
A lithium cell with a capacity of 700mAh can easily supply 2A (much more in fact) for some time, some are rated up to more than 30C (which for a 700mAh cell would mean 30*700mAh = 21A)
Perhaps the box includes a simple resistor for current limiting, perhaps it's only meant for charging cell phones and personal music players and perhaps it's not that wise to experiment too much with badly spec'd lithium cells without proper knowledge...
Far better to buy a lithium cell for the purpose, built and spec'd well, with a overcharge/-discharge protection built in and such (and a matching charger) and be more safe from fireballs and agitated parents, that don't see eye to eye with having your home burnt crisper than your X-mas dinner (now consumed under open skies) in the name of "getting really exited".