www.sunlikebattery.com amy@sunlikebattery.com OPzV Tubular Gel Battery Descriptions: 1. SunLike OPzV Gel Range are maintenance free sealed valve regulated lead acid rechargeable batteries offer their superior performance and reliability. 2. SunLike state-of-the-art manufacturing facilities with wealthy experience ensure safety,outstanding battery life and value. Each cell is 100% factory  tested. 3. SunLike OPzV Gel Range batteries can be used in float or deep cycle(1500 x 80%) service and have a Design life of 20 years at 20°C. 4. SunLike OPzV Gel batteries can be stored up to 2 years at 20-25°C without  fresh charging.