Description Nominal voltage: 12V Input voltage: 12.6V Output voltage: 9V-12.6V Battery capacity: 30000mAh (30Ah) Outer diameter: 67*110*18mm Comply with protection functions: overcharge, over-discharge, over-current, short-circuit protection functions Battery charging requirements: 1: Requires special lithium battery charger; constant voltage; 2: Charging voltage: 12.6V 3: Charging current: less than 2A 4: Support the charger's red light to turn green when fully charged Battery discharge requirements: 1: Input: Output: 2 20# wires, 150mm long 2: Maximum instantaneous current: 10A 3: Maximum operating current: 5A 4: If you have other requirements for input and output, please contact the owner. The above are the default transfer parameters. Inventory: 2 12V-30Ah lithium batteries + 1 charger Scope of application: All 12V appliances, washing equipment, electricity, xenon lights, 12V battery replacement, instrumentation, speakers, monitoring, electric types, all kinds of 12V light fixtures. Advantages of lithium batteries: 1. Small size, light weight, large capacity, environmentally friendly and no memory effect. 2 is the first choice for power supply of portable electronic devices, but after the battery is damaged when using lithium battery, please pay attention to the following points. Lithium battery knowledge: 1. A standard lithium battery charger 12.6V must be used when charging. 2. High current discharge is prohibited. 3. Discharge is prohibited, and the voltage of a single battery should not be lower than 2.5V. 4. It is prohibited to disassemble or short-circuit the battery, which is likely to be caused by a short circuit. 5.Temperature 0-60