Characteristics: 1). The batteries have been added acid and full charged before sent out of factory, can be use immediately and conveniently. 2). Sealed with creditable specialnology. You may take it from any direction, do not worry the acid coming out. 3). Made of super pure materials, which make it even under room temperature 20℃ for a period of 8 months, still has 4 times current than normal battery and can be right work as soon as it is connected. 4). With the imported additive, the using life can reach over 2 years under the normal using conditions. Low price with high quality. Welcomt to inquiry!