Battery Dirk Dirk is the official website of Chinese high-tech new generation of direct energy product development, production and sales base, the industry leader. Dirk is China Chemical and Physical Power Industry Association and the China Battery Industry Association, vice chairman of the unit, with the industry's leading high-quality products and systems, research and development capabilities and marketing services capabilities. Dirk is a "national contract and trustworthy enterprise", competition unwavering attention to product quality, credibility and perceived value of services. In the development of enterprises, is the industry's only dual-board "National Environmental Friendly Enterprise", but also "China Famous Brand", "national key high-tech industry group," "China's electronic information hundred enterprises" honor winners. Continue to learn from the world's most advanced concepts and technologies to enhance the capability of independent innovation is the driving force behind the development of dual-board and rigid internal. Shuangdeng always adhere to the strategic cooperation with outstanding research institutes, innovative research, the development of advanced energy research center established in cooperation with the establishment of the Chinese Academy of Sciences, academician workstation, post-doctoral research station, state-level enterprise technical centers and Nanjing Institute of Science and Technology Development, bear country 863 and other high-end research and development of new energy projects in the world prospective major technical indicators: 25 ℃ under normal conditions of use, float life of up to eight years; the battery is not in use, leakage, no mist, no increase during use Note Acid; self-discharge: <4% (25 ℃, 28 days); deep cycle life: ≥600 (80% DOC); Working temperature: -15 ℃ - + 45 ℃; sealed reaction efficiency: more than 96%; Features: high strength ABS plastic shell with a shock-resistant, anti-vibration performance and good; lead-based multi-specialty alloy grid (ZL 01 2 77477.7), internal resistance, corrosion resistance, good charge acceptance ability of new plate manufacturing process. active material utilization high. quality fine glass fiber membrane, large current discharge performance. High-purity electrolyte additives, low self-discharge characteristics of special multi-layer sealing technology and a special sealant to ensure no leaks no mist escapes safety reliable mix old and new batteries will increase the resistance? Today to recommend a new battery "double board battery" dual-board batteries with new energy battery technology research and development of contemporary art, the performance indicators in line with YD / T799-2002 and IEC standards. The product has a sealed safe, reliable, high specific energy, internal resistance, low self-discharge, charge acceptance capacity, long cycle life, sealed reaction efficiency advantages. Can be used for many purposes, such as: telecommunications, power generation, power distribution, remote control and traffic engineering, security, power supply, data engineering systems, alarm signals and safety lighting. Dual-board battery is fixed in the colloid electrolyte sealed VRLA rechargeable battery. Colloidal technology invented and developed by dual-board company. Achieve a maintenance-free battery. It is the analysis of gas low, durable, 12-year design life, as well as actual operating experience has proved its high reliability. During use, you can not mix old and new batteries in the old string into use, as the old battery internal resistance greater capacity decreases, apparently will shorten the time to maintain the power supply, the output voltage reaches the minimum value of the time shortened. Therefore, when the output power is fully loaded, maintenance time after using the old battery definitely reach a new battery that can be sustained period of time, but also reach the equipment specified duration. But generally are not full use of the device. Can be up to 70% of the load is no longer small, some not yet reached 30%. So in the light load, the battery is still possible to use the old equipment to meet the requirements for the maintenance of time, if the old battery discharge time is too long, it will definitely cause the battery discharge, the same may damage the battery completely. Dirk maintenance-free battery Features: 1, using solid gel electrolyte. In the same volume, electrolyte capacity, heat capacity, heat dissipation capacity, to avoid thermal runaway is generally easy to produce batteries like. Ability to adapt to the ambient temperature (high and low) strong. 2, the internal no free liquid is present, no internal short circuit may be. 3, the electrolyte concentration is low, weak plate corrosion; uniform concentration, acid stratification phenomenon does not exist. 4, dual-board battery to withstand deep discharge and super high-current discharge capability, overcharge and over discharge protect themselves.