Characteristics: 1). Clairvoyant appearance: using top-capability transparent industry plastic to be the case, it can be seen inside structure, and has more safe capability. 2). More easily maintained with longer using life: open the upper cover, add the acid by yourself, which can make the using life longer and maintain it more easily. 3). Higher capacity and conductivity: advanced craft and high quality imported copper terminal make the battery in high conductivity. 4). Sealed structure make user reassuring: terminal, case, cover with special craft and elaborate design make it super sealed, which can be used safely. Low price with high quality. Welcome to inquiry.