eeekit 30a solar charge controller, solar panel charger controller 12v/24v, multi-function adjustable lcd display with dual usb port timer setting pwm auto parameter eeekit <b>features:</b></br>*30a solar charge controller: build-in industrial micro controller, automatically manage the working of solar panel and battery in a solar system.</br>*lcd display: clearly indicate the status and data, it can be conveniently switched modes and parameter configuration, parameters adjustable.</br>*safe to use: it has short-circuit protection, open-circuit protection, reverse protection, over-load protection, and fully 3-stage pwm charge management, improve system efficiency and prolong the life span of the battery. </br>*easy to install and operate: (1)battery --->(2)solar panel ---> (3) load. </br>*with timer function: you can set the on/off and a certain number of hours as you like, without extra worry, it is convenient for your life.</br></br><b>specification:</b></br>type: solar charge controller</br>battery voltage: 12v / 24v</br>charge current: 30a</br>working temperature: -35°c - 60°c / -90°f - 140°f</br>self consume: 10ma</br>float charge: 13v</br>usb output: 5v/2.5a</br>overcharge protection: 14.4v/28.8v</br>overcharge floating charge: 13.7v/27.4v</br>charge recover voltage: 12.6v/25.2v</br>over-discharge protection: 10.7v/21.4v</br>max input power and voltage: 390w /12v; 780w/24v</br></br><b>q&a</b></br>1.q: how to install it?</br>a: the charge controller should connect the battery first, then the solar panel, and finally the load. the disassembly sequence is contrary to the wiring order.</br></br>2.q: without using a battery, can it be wired to an inverter and work directly from that?</br>a: sorry no. a solar panel can't run an inverter without a battery.</br></br>3. q: what type of battery do i need?</br>a: the charge regulator is only suitable for lead-acid batteries: open, agm, gel, it is not suited for nickel hydride, lithium, li-ions, or other batteries. any questions, please feel free to contact us.</br></br><b>package includes: </b>1 x solar charge controller. 1 x user manual.