Item No.: K43D731
.Output voltage: 12V DC   
.Starting current: 300Amp  
.Working temperature: -40℃ to 65℃  
.100% maintenance free,no need for recharge during storage  
.100 seconds quick recharge (press "Start" button to  start charge )  
.Built-in voltage meter to read voltage of vehicle 's battery  
.No degradation of performance af freezing temperature.  
.No degradation of performance with age.  
.More than 10000 times uses.  
.Shelf life-more than 10 years.  
.Short circuit /Reverse polarity protection.  
.Also can use mini USB plug from your mobile power bank to start the recharge.