Recommended models: alkaline green energy, lithium iron batteries
 
Shuanglu is a well-known old brand of dry batteries in China, belonging to the world's third largest alkaline battery manufacturer Bank of China Group, and has been ranked in the "China's 500 Most Valuable Brands" list of the World Brand Conference for 14 consecutive years from 2004 to 2017. With an annual output of 3 billion batteries and sold to more than 80 countries and regions, Pairdeer and Sonluk are both English names of its brands.
 
Although the market share in China in recent years is far less than Nanfu, in the experimental evaluation of media such as Digital Home, Shuanglu's alkaline battery capacity is the leading in China, and the price of No. 5 and No. 7 batteries is only 1.5 yuan, which is cheaper than the 2 yuan price of common alkaline batteries on the market. In March 2017, Shuanglu Battery Co., Ltd. successfully increased the battery shelf life from 7 years to 10 years by improving anode materials and introducing new material sealing rings. Shuanglu's shelf life and safety are not inferior to other top brands in the industry.
 
Shuanglu has strong scientific research strength, has a provincial chemical power engineering technology research and development center in Zhejiang Province, and is also the only Chinese enterprise to participate in the revision of IEC international standards. In June 2016, the world's first unmanned intelligent battery production line was put into use in Shuanglu, which is a fully machine-automatic production line of alkaline batteries, with excellent quality control and more stable assembly process.
 
Shuanglu has batteries of various materials and models, and there is a lot of choice. Taking No. 5 battery as an example, there are carbon batteries with a lower price of about 0.6 yuan, alkaline green energy with a price of about 1.5 yuan, and lithium iron batteries with a price of 10 yuan. Among them, lithium-iron batteries are not cost-effective because of the high cost of raw lithium, although the power is the highest and the quality is the lightest, but considering the price, the cost performance is not high, and it is suitable for some extreme environments or scenarios with strict requirements for weight. Although carbon batteries have the lowest price, they only have one-fifth or less of the power of alkaline batteries, and their shelf life is often very short, and they have been completely eliminated in the U.S. market. For the purchase of ordinary household batteries, alkaline batteries are the most cost-effective, with relatively sufficient power and long shelf life, which can meet the needs of work and life in most cases.
 
Shuanglu's alkaline battery products have been constantly innovating and developing from the original mercury-free alkaline battery to the current alkaline green energy. Now the main alkaline green energy capacitance is high, cost-effective, good reputation in the industry, and the capacitance ranks first in the experimental evaluation of many domestic media, and the 10-year shelf life is also the highest level in the industry at this stage. Shuanglu's electronic lock series specially designed for smart door locks is also an alkaline battery, which is more adaptable to the environment and has a better sealing process.
 
Shuanglu is also one of the first large enterprises in China to develop lithium iron batteries and realize marketization, lithium iron batteries are light in quality and high in power, suitable for cameras, walkie-talkies, flashlights and other tourism, exploration long-term handheld equipment power supply, but at present, Shuanglu only launched the lithium iron battery of No. 5 battery, the price is relatively high, each battery is about 10 yuan.