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Smart battery box for outboard motor for battery group 24/27/31: compatible with deep discharge 12 V/24 V battery systems (battery not included). Suitable for group 31, 27 and 24 batteries, with a maximum load capacity of 35 kg. Ideal for outboard motors, camper vans, camping, solar installations and other outdoor adventures that require a reliable off-grid power solution. All-in-one marine battery box: equipped with a 12V/24V cigarette lighter socket, USB-C PD, USB-A QC 3.0, two Anderson input/output ports and high-current terminal connectors. Simply place your battery inside to instantly transform it into a versatile, portable power center, perfect for marine, RV or off-grid use. Smart Protection & Real-Time Monitoring - Each Anderson port is protected by 30A replaceable blade fuse to protect against over-current (spare fuses not included). A 10A resettable circuit breaker protects USB ports and cigarette lighter socket from overloading. Use the on/off switch to eliminate standby power consumption when not in use. The LED display shows the battery voltage in real time and alerts you of low voltage conditions. DURABLE, PORTABLE & EASY TO USE - Designed for harsh environments, the box protects your battery from water, dirt, oil, petrol and UV rays and is designed to withstand shock, corrosion and extreme temperatures to extend battery life and improve safety. The two side handles make it easy to lift and carry, while the rubber lids protect against water and dust. Use the included strap and mounting hardware to keep the battery case secure during transport or use. [Important Usage Reminders] Do not connect a solar panel directly to the Anderson port — always use a charge controller to avoid damage to the battery. Turn off the power switch when not in use to avoid power discharge in standby (about 70mA per hour). Do not lift this waterproof battery case using the secure strap, always use the double side handles for safe handling.