Thank you for your answer, so it may be a good idea to connect an identical battery in parallel to double the capacity.
Could you kindly advise me where I can find the same battery as in Advanced model ?
Upis is really great product especially for solar projects (with advanced version) I think.
At that point, my question is, what if I want more capacity in battery?
Is it so easy to buy a bigger lipo battery, plug and go?
If so, what rates you would recommend for the battery?
Raspi cases are now all around but no camera case I've seen yet on the net.
Especially to avoid static discharge and short circuit hazards I think it is mandatory to have one.
Anyone that can address such a product to buy ?