ITEM NAME:1 pc MPPT Solar Panel Controller 12V Lithium Battery Charging Nice Descriptio n Description: Charging management board features: 1. The high-end technology MPPT solar maximum power tracking charging management chip, with a trickle, constant current, constant voltage charging management 2. Imported high frequency low conduction resistance double MOS tube, large current diode, efficient flat power inductor, alloy current sense resistor 3. The bottom of the large aluminum heat sink, guarantee the stability of large current length of time and work 4. High speed and efficient way of charging 5. Double status indicator light, not the battery when the red light flashing green light normally on, red light when charging, auto stop when full of green light at the same time Specifications: Specifications: Input voltage: 9V/12V Output voltage: 3.7 V nominal full of termination voltage of 4.2 V lithium battery series of lithium battery management 3 a output current: the most it flow Connection mode: welding + input IN the anode, the IN - input cathode (SOLAR) OUT + battery anode, the OUT - battery cathode Size: 4.5x3.1cm/1.77x1.22inch Package Included: Package includes: 1 x Battery Solar Controller Note: 1.Due to the manual measurement and different measurement methods, the actual size could be slightly different. 2.Please be reminded that due to lighting effects and monitor's brightness/contrast settings etc, the color tone of the website's photo and the actual item could be slightly different. High quality buy, happy buyï ¼ 1 pc MPPT Solar Panel Controller 12V Lithium Battery Charging Nice.Imported high frequency low conduction resistance double MOS tube, large current diode, efficient flat power inductor, alloy current sense resistor. + input IN the anode, the IN - input cathode (SOLAR).