1. Internal structure
blue terminal = negative pole ;
red terminal = positive pole ;
2. please use the charger we suggested to charge the battery . ( the car engine can directly charge the battery ) click charger to buy it .
and please do it according to the points on the charger , red clip connect with positive ,black clip connect with negative.
when you consider to buy our battery , you must know the knowledges of lithium battery.
3. Battery goods belong to sensitive items , we produce the best battery , so welcome customer come to our warehouse
4. You can contact with seller for details shipping , do wholesale also can find the sea shipping .