Hi, I've been searching in the web for a while and I see now that I need help in this project.
The idea is to use a small wind turbine in a ventilation shaft and with this movement charge a sealed lean-acid battery to store the energy, later on I would connect a cellphone charger to the battery to charge it.
This would be an emergency system and it won't be necessary to fully charge the cellphone.
Reading through the web about wind turbines, to store the energy it says that I would need a charge controller to avoid making damage to the lean-acid battery.
Also it's in my understanding that the energy generated from this kind of energy through a generator comes as DC, and it turns out that cellphone batteries also use DC electric so my guess is that I don't need a power inverter to plug the cellphone to the lean-acid battery, I would just need another charge controller.
Finally, I declare myself as a person that has no idea about this kind of things and I really need easy explanations to understand this stuff.
Thanks anyway