Solar Charge Controller for Lithium Ferrous & Ion Battery - 6.4V - 6amps with 5V USB Charger, Digital Controlled PWM technology based Solar Charge Controller & Regulator of 6.4V-6amps with inbuilt protections and 6V battery charging feature for LiFePo4, Lithium Ion and Lead Acid type batteries of up to 6.4V. Specially designed for recharging LiFePo4 and Li-Ion batteries that should not be charged by normal solar charge controllers used for lead acid type 6V batteries as it can damage the battery permanently by undercharging, voltage differences that may ultimately reduce the cycles of the battery.  It can be connected to a maximum of 20W solar panel with VOC of up to 9V and a battery bank of 6.4V. The controller features a smart tracking algorithm that maximizes the energy harvest from the PV and also provides load control to prevent over-discharge of the battery There are a number of protections that the Solar Charge Controller ensures. Solar Charger Controller stops reverse current flow from the battery to the solar array, it provides load short circuit protection, it provides Battery/Panel reverse protection through DC fuse and Overload protection also. Additionally, it has a 5V USB which is suitable for recharging smartphones & other 5V devices.