Every solar power system needs an equally efficient regulator, like this SRNE VOLTX 12V 50A MPPT DC to DC Lithium Battery Charger. Designed based on an advanced multi-phase synchronous rectifier technology and MPPT control algorithm, it delivers rapid response speed, high reliability, and high industrialised standard. It's perfect for charging an auxiliary battery in a dual battery system with an improved overall charging efficiency and light energy utilisation plus, can also be used in DC-DC control circuits for voltage & current regulation. On top of these, you also win in versatility here as it has 4 charging phases suitable for charging lead-acid batteries and 3 generator charging modes for recharging through a vehicle generator. Easy to monitor and equipped with built-in protective features, this is a must-have for anyone going solar! SPECIFICATIONS Model: MD1250N05 Backup Battery System Voltage: 12V Backup Battery Voltage Range: 9~16V DC Backup Battery Type: Sealed Battery, Gel Battery, Vented Battery, Lithium Iron Phosphate Battery, User-defined Battery Rated Charging Current: 50A Maximum PV Input Voltage: 55V DC Max. power point voltage range: 17~36V Maximum PV Input Current: 45A Solar Panel Charging Mode: Buck MPPT MPPT Efficiency: >99% PV input power is recommended: 700W Generator (Starter Battery) System Voltage: 12/24V Starter Battery Type: Lead-acid Battery Max. Generator Input Voltage: 32V DC Maximum Generator Input Current 35A Conventional Generator: 13.2~16V/26.4~32V DC Intelligent (Euro 6 Standard) Generator: 12~16V/24~32V DC Generator charging mode: Buck, Boost, Buck-Boost 12V Backup Battery: 700W Charging Voltage: 13.8V Charging Current: ≤25A No-load loss: | 12V 50A SRNE Voltx DC/DC Solar Charging Controller Regulator MPPT Dual Battery USB RV