Recommended models: alkaline batteries, lithium-iron batteries
 
Energizer belongs to the American company Yongbei and is the largest manufacturer of batteries and portable lighting equipment. The mercury-free alkaline battery was invented by Energizer. In the U.S. domestic battery market, Energizer ranks second in sales, with a market share of about 30%, second only to Duracell, and its products are sold to more than 170 countries around the world.
 
Energizer is the main competitor to Duracell batteries, and the two battery brands have a long history of fighting, dating back to 1960, but they are always slightly inferior to Duracell. In 2018, Energizer acquired Retwei, the third in the U.S. alkaline battery market and the world's first hearing aid battery, which has strengthened its brand strength and scientific research strength, and in the future, it will be more unpredictable to compete with its old rival, Duracell Battery, which is owned by Warren Buffett.
 
However, because of the continuous losses in China, Energizer began to gradually withdraw from the Chinese market in 2015, and there are no official channels to sell in China, but there are still many Energizer batteries circulating on e-commerce platforms.
 
There are a wide range of energizer batteries, covering all types of batteries and models, with excellent performance. The original AAAA batteries of the notebook stylus represented by the Microsoft Surface are all Energizer batteries.
 
Energizer's alkaline batteries perform well in terms of capacity and durability, with a shelf life of 10 years, although the power is not as good as Duracell, but it also has excellent performance in many evaluations in Europe, ranking ninth in alkaline batteries in the United States "Consumer Reports", which is a good choice for some partial battery models; Energizer's lithium-iron battery is also the only imported lithium-iron battery in the Chinese market, and "Consumer Reports" even made a separate lithium-iron recommendation list for Energizer lithium-iron battery for key recommendations.