This battery unit forms with the StromPi V3 a complete UPS solution.It is available as a third voltage source and can be monitored and can be automatically recharged. It is based of the LiFePo4 technoloy and offers more essential advantages compared to the standard lithium-ION structures:* increased security because there can not be a chemical spontaneous combustion* a longer life time as lithium ION technology* more charge cycles* the battery gets automatically charged if it runs with a external voltage sourceIn the battery electronic, protection circuits against overload, short-circuits and deep discharging are integrated.