How to choose a good lead-acid battery for electric vehicles only need to remember one trick to avoid being pitted. The batteries used in electric vehicles are lead-acid batteries and lithium batteries. The advantages of lithium batteries are light weight, high energy density, long mileage, fast charging, long service life, etc. However, its fatal disadvantage is that it is easy to ignite and burn, and the harm is huge.
As an ordinary consumer, lead-acid batteries must be the first choice from a safety point of view. After more than 100 years of development, lead-acid batteries have mature technology, reliable quality, high market share, and will not deflagrate and catch fire after being widely used by consumers. However, there are also many consumers who report that the current lead-acid battery is not as good as before, mainly because the service life is not as good as before.
When we go to the electric vehicle repair department to replace the battery, the boss will usually ask you whether you will replace the battery with a better battery or if you will replace it with a normal one. At this time, we don't pay attention to the brand of the battery, as long as we look at the net weight on the outer packaging of the battery, we can choose a good battery.
There are three kinds of lead-acid batteries on the market now, taking the common 12 volts 20 amps as an example, a single weight of 6 kg is an ordinary lead-acid battery, a single weight of 6.5 kg is a mid-range battery, and a single weight of more than 7 kg is the best graphene battery.
How to judge the net weight of the battery? Generally, there will be the gross weight and net weight of the battery on the outer packaging of the battery, the gross weight refers to the weight of the battery including the carton, and the net weight refers to the weight of several batteries minus the carton. Taking the common 60 volts 20 amps as an example, if it is an ordinary lead-acid battery, the gross weight on the outer packaging is about 31 kg, the carton, manual, and packaging foam board are about 1 kg, and the net weight of 5 batteries is 30 kg, divided by 5 to get the weight of each battery is about 6 kg.
For a single lead-acid battery weighing 6.5 kg, the gross weight on the 60 volt 20 amp outer package is 33.5 kg, and the net weight of the battery is 32.5 kg. The gross weight of a single graphene battery weighing 7 kg on the 60 volt 20 amp package is 36 kg, and the net weight of the battery is about 35 kg.
Why choose a heavy lead-acid battery? Because now the battery plays tricks, the lightweight battery plate is thin, and the use of recycled lead. Re-determination lead is the old battery that is exchanged for the new, which is taken away by a person with professional recycling qualifications for dismantling and refining, and the lead produced is called recycled lead. Batteries made from recycled lead sheets will break down after about one to one and a half years of use due to impurities in lead. It is because the impurities and plates contained in recycled lead are too thin, which affects the chemical properties and service life of the battery.
The battery with a positive component generally uses primary lead, which is a new lead produced by smelting lead ore, with high purity, and the battery made of this lead has good electrochemical performance, and the thickness of the battery plate with a positive component can store more power, and the battery mileage is long, and the service life is more than three years. In a word, weight is king when buying lead-acid batteries, and the heavier the weight, the better the quality of the battery, and of course, the long service life.