Compact solar charge controller designed for reliable battery management and faster device charging Key benefits Multiple layers of protection reduce common electrical risks during charging and discharging, including reverse discharge, undervoltage, reverse connection, overload, and short circuit protection. Universal compatibility with 12 V and 24 V lithium ion and lithium iron battery packs. Battery type is detected automatically or can be selected manually for flexible setup. Fast charging for mobile devices and power banks via dual USB ports and a Type C port that support fast charge protocols. Simple installation with a built in DC5521 interface that plugs directly into the controller to avoid complex wiring. Can be driven directly by photovoltaic panels, making it suitable for off grid and portable solar setups. Features Built in charging and discharging safety hour accumulation to help manage runtime and protect the battery during extended use. Protection functions: battery reverse discharge, battery undervoltage, battery reverse connection, overload, and short circuit protection. Output: USB 5 V for device charging; output method: USB. Power input: compatible with photovoltaic panels for direct solar operation. Compatible voltages: auto or manual selection for 12 V and 24 V battery systems. Operating temperature range: 35 C to +60 C. Material: durable ABS housing. Weight: approximately 119 g / 4.2 oz. Practical uses Camping and outdoor trips: connect a portable solar panel and a 12 V or 24 V lithium battery to charge phones, power banks, and small USB devices while protecting the battery from common faults. RVs and boats: add compact charge control between a solar array and onboard lithium batteries to simplify wiring and enable faster charging of USB devices. Remote lighting or small off grid systems: use photovoltaic panels to power the controller and manage battery charging and discharging safely in remote locations. What is included 1 x Solar Charge Controller This compact controller is intended for straightforward installation and everyday use with solar panels and lithium battery packs where USB device charging and basic battery protection are required.