Meanwhile, the PowerFort itself takes between three and four hours to recharge completely, with Choiix estimating that even after 500 charges of the unit's lithium-polymer battery should still retain between 85 and 90% of its full capacity. The PCB to which the battery is attached within the PowerFort contains protection against short circuits, over-charging devices, temperature and current problems, whilt protecting the battery from the every-day issues of charging and discharging devices via the PowerFort. In short, it should keep your devices safe from harm as well as protecting its own well-being for the lifespan of the product.