These brands of electric vehicles have good batteries: Tianneng, Chaowei, Haibao, Shengyang and Xinxueneng.

1. Tianneng

Tianneng Power is the largest power battery manufacturer in China, mainly engaged in the research, development, manufacture and sales of power batteries such as lead acid, nickel-hydrogen and lithium ion, electronic appliances for electric vehicles, and wind energy and solar energy storage batteries. Tianneng Power has successively been rated as one of the top ten enterprises with national industrial benefits, one of the top 5 private enterprises, one of the advanced collectives in the national light industry, one of the top 1 enterprises in Zhejiang manufacturing industry and one of the top 1 enterprises with China potential in Forbes 28.

2. Chaowei

Chaowei Power Supply Co., Ltd. was founded in 1998. It is a national key high-tech enterprise, a national inspection-free enterprise with product quality, a key industrial enterprise in Huzhou, a leading manufacturing enterprise in Huzhou, a member of the National Battery Industry Association, a member of the National Electrical Appliance Industry Association, a vice-president unit of the Provincial Battery Industry Association, and a list of "China Potential 1" in Forbes in 25.

3. Haibao

Haibao brand lead-acid battery products for electric bicycles have the advantages of large capacity, high specific energy, good low-temperature performance, strong deep discharge recovery performance and long cycle life. Its performance index is among the best in the international similar products, and it has been designated and selected by many well-known domestic electric vehicle supporting manufacturers.

4. Shengyang

Shandong Shengyang Power Supply Co., Ltd. is a national high-tech enterprise. The company was founded in January 1991 and listed on the small and medium-sized board of Shenzhen Stock Exchange on May 6, 214. It is one of the earliest enterprises in China to develop and manufacture valve-regulated sealed lead-acid batteries, and the first enterprise in China lead-acid battery industry to pass the export inspection-free audit.

5. New demand energy

Established in 23, New demand energy power supply has been selected (named) as a national inspection-free product, a well-known trademark in China, a winning brand of national home appliances going to the countryside, a favorite battery brand of national consumers, and the executive director unit of China Low-carbon Industry Alliance. It has subsidiaries such as Changxing Tiandu Power Supply, Jiangsu Jinchangxing Power Supply, Xinyi Shenghua Power Supply and Jiangsu Jinjie Electronics, and realizes a complete industrial chain of battery assembly, plate production and pulse charging battery manufacturing. Nissan has 7, batteries for electric vehicles, and its Jiangsu Jinchangxing Power Supply passed the acceptance of the Ministry of Environmental Protection in 214.

Extended information:

1. Deep discharge

The lead storage battery used in automobiles only discharges in one direction when it is ignited, and the generator will automatically charge the battery after ignition without causing deep discharge of the battery. However, electric bicycles can't be charged when riding, and they often discharge more than 6% in depth. During deep discharge, the concentration of lead sulfate increases, and the vulcanization will be quite serious.

2. Heavy current discharge

The 2 km cruising current of electric vehicles is generally 4A, which is already higher than the working current of batteries in other fields, and the working current of speeding and overloading electric vehicles is even greater. Battery manufacturers have conducted the cycle life test of 7% charge at 1C and 6% discharge at 2C. After such a life test, many batteries can reach the life of 35 charge and discharge cycles, but the actual effect in use is far from perfect. This is because the high current operation increases the discharge depth by 5%, and the battery will accelerate the vulcanization.

4. Short-term charging

Because the electric bicycle is a means of transportation, there is not much time for charging. In order to complete 2 ampere-hour charging of 36 volts or 48 volts within 8 hours, it is necessary to increase the charging voltage (generally 2.7~2.9 volts for a single battery). When the charging voltage exceeds the oxygen evolution voltage (2.35 volts) or hydrogen evolution voltage (2.42 volts) of a single battery,

5. It can't be charged in time after discharge

As a means of transportation, the charging and discharging of electric bicycles are completely separated, so it is difficult to charge them in time after discharge. However, if a large amount of lead sulfate formed after discharge is not charged for more than half an hour, it will sulfide into crystals.

6, correctly grasp the charging time

In the process of use, we should accurately grasp the charging time according to the actual situation. Refer to the usual frequency of use and mileage, and also pay attention to the description of capacity provided by the battery manufacturer. As well as the performance of the matching charger, the size of the charging current and other parameters. Generally, batteries are charged at night, and the average charging time is about 8 hours. If it is lightly discharged (the mileage is short after charging), the battery will be full soon, and overcharging will occur if it continues to charge, which will lead to water loss and heat generation of the battery and reduce its life.

7, prevent exposure

electric vehicles are strictly prohibited from exposure in the sun. The high temperature environment will increase the internal pressure of the battery and force the battery pressure limiting valve to open automatically, which will directly lead to the increase of the water loss of the battery. Excessive water loss of the battery will inevitably lead to the decline of battery activity, accelerate the softening of the electrode plate, and cause fatal injuries such as heating, bulging and deformation of the shell during charging.