The product is free of welding and users can freely disassemble and replace the battery Equipped with DC equal voltage UPS function, achieving automatic charge and discharge management without manual involvement Multiple output functions, covering commonly used 5V, 9V, 12V voltages such as optical modem, router, surveillance camera, etc Through quality control, long-term stable operation and extend service life The product has stable performance, with a output power of up to 60W Product Parameters: Battery capacity: 6 * 3.7V * 3400mAh=74 watt hours (battery to be provided by the user) Rated output power: 12V5A=60W; The actual output power comes from the battery's own output power Output voltage: output 12V3-5A; 9V1A; USB5V2-3A; Enabling UPS functionality requires meeting input power conditions The product does not stabilize voltage, and the battery is connected in series for direct output. The voltage increases or decreases with the amount of electricity Suitable for high-power electrical appliances, motors, LED lights, speakers, solenoid valves, printers, etc. that do not require voltage stabilization Applicable battery: 3.7V cylindrical flat head 18650 battery (recommended power battery) Charger type: Internal charging current limiting circuit, can be with a 12-13V adapter. When using UPS, the larger the input power, the more stable it is Charging power: Input adapter power meets>=total load power+6W battery charging power Overcharge protection: 4.25V * 3 Low voltage protection: 2.75V * 3 Overcurrent detection voltage: 0.1V+-0.025V Temperature range: -20~60 ℃ DC interface standard: DC 5.5 * 2.1mm (positive inside and negative outside) Color: Black Material: plastic Package Contents: 1*Mobile power box 1*Power cord Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.