Features: Dust protection plugs. Protection design: short circuit protection, anti-reverse protection, overcharge protection, constant proctection, voltage regulators protection. Built-in light modes in case you're stranded for something other than your bettery. Very connvenient, can be charge at home and car. By using a connector, you can use it to provide power for your car refrigerator or other 12V electronics like car cleaner. Alloy plastic material, super-tough, environmentally-friendly and antiflaming. The structure adopts multi-point buckle and low pressure seamless ultrasonic technology, which has good dustproof and splash-proof function. Anti-high temperature, low temperature resistance. USB output 2A port for fast charging.8pin/30pin/Micro USB/Mini USB for choose. Using the standard polymer battery in Europe and America, and it has the safest explosion-proof polymer lithium core, as well as anti-overcharge, over-discharge, leakage protection and so on. Pure copper coarser power supply interface.