Description: Starting supply: 300A current: 600A Capacity: 20000 mah Recommended : -40-80°C USB interface output: 5V/1A/2A Charging input voltage and current: 5V/1A Charging time: about 2 to 3 hours Output port voltage: start port 12V LED on, mode switching method: hold down the switch for 3 seconds to turn on the constant light, press again to switch to flash mode, press again to switch to SOS mode, double-click red and blue flash, double-click off. Fire frequency upgrade: can fire 20-30 times in a row Balanced charging system: to prevent voltage instability 5.0L gasoline car, support 12V/5.0L specifications of gasoline car. 3.0L car, support 12V/ 3.0L specification of family car. Features: - /gasoline , strong battery. charge, support up to 30 times to start the car. - Polymer li-ion battery, intelligent IC. Designed for car start battery, stable current, high charging efficiency, long life, can withstand the car start moment strong current shock. - Explosion-proof more safety, heat insulation treatment, high temperature resistance. - Nine protection: polymer li-ion battery, overcharge protection, voltage stabilization protection, constant charge protection, short circuit protection, overdischarge protection, anti-reverse protection, temperature protection, magnetic protection. - cellphone/digital charger, can charge USB interface electronic devices, compatible with the mainstream models in the market. - Strong light LED cellphone tube, strong light long shot, enjoy exploring the world. - Suitable temperature -40-80 degrees, protection system. Package included: 1 x Multifunctional portable vehicle emergency starting powerbank