Now there are many types of batteries that two-wheelers can choose from, including traditional lead-acid batteries, graphene batteries with upgraded technology, ternary lithium batteries, lithium iron phosphate batteries, sodium batteries that have just been listed, and solid-state batteries that are preparing to be listed. But no matter what kind of battery, durability and reliability are the last word!
However, from the perspective of actual use effect, the price of lithium batteries of large brands sold on the market is not cheap, but the quality is too poor, too unused, and there will be problems in less than a year, and the performance is really not as good as lead-acid batteries. And cheap lithium batteries are too unsafe, so buy an electric car or a lead-acid battery, which is cheap and can be replaced every year!
Here's my story!
Story 1:
The Yadea DE2 electric car purchased in 2021 has a price of 3699 yuan, and it is equipped with a 48V20AH Xingheng lithium manganese oxide battery. The new car has a range of about 65 kilometers, and the time I bought the car was in April 2021. In less than half a year, the car began to lose power suddenly, and by the winter of December, the range was only 30 kilometers. In April of the second year, I went to the after-sales warranty, and the after-sales service said that it was a two-year warranty anyway, so let's use it first.
In October of the following year, the battery life was only 20 kilometers, and there was no way to go to after-sales again. The battery and the car were put there, tested for a week, and the result I got was that there was no problem with the battery! Isn't this a fool? Can be one is one, only the customer spends money, the staff has a commission.
Finally, after my difficult complaints, Yadea finally contacted Xingheng manufacturers and replaced me with a battery. It's not an after-sales replacement, it's a battery replaced by the manufacturer.
From this we should understand:
Whether it's a two-year warranty or a five-year warranty, you can really do it, no! If you don't work hard, you won't be able to !!
Story 2:
The Luyuan INNO7 electric car I bought in 2022 was about 4,200 yuan when I bought it, and it was equipped with Nandu's 48V26AH lithium iron phosphate battery. The battery is really durable, and you can run 100 kilometers on a single charge without problems. But the battery was not used, it was only charged 106 times, and now it has begun to lose power suddenly. As soon as the power drops to 30%, there is no power all at once. When used in normal use, it is generally charged at 40%-50%, and 0% is rarely used.
When I went out the day before yesterday, I saw that there was still 45% of the electricity, thinking that this was SOC metering, and there was a range of more than 40 kilometers, so I went out. Unexpectedly, on the way back, the power suddenly went off at 33%, and I could only push the car back. Whether you pull the plug or pull the switch, there is none, there is no electricity at all. This power-down is not the same as lead-acid, after the lead-acid power is off, you unplug the plug and plug it in again, and the power will be displayed.
Now it is certain that there is a problem with this lithium iron phosphate battery, although it was bought with a five-year warranty! It's only been two years and it's broken!
Whether it is ternary lithium, lithium iron phosphate, or lithium manganese oxide battery, the most important thing is matching, the internal resistance of the battery cells in a group of batteries should be as consistent as possible, and the smaller the difference, the longer the service life of the battery. I wondered, Xingheng and Nandu are also well-known manufacturers, why can't even a lithium battery be made? Do you have to cut corners and fool users?
It's not that lithium batteries are bad, but that the life of lithium batteries is too short, and there will be problems in less than a year, too much, Xingheng's lithium manganese oxide is the king of bulging, and now Nandu's lithium iron phosphate is the king of power-off, which lithium battery can be trusted? It's no wonder that lithium batteries have been launched for more than ten years, but users can't accept it!
If the durability of lithium batteries does not improve, there is no advantage at all over lead-acid batteries!
1. Price
A 48V26AH Xingheng manganese acid battery is about 900 yuan, a 48V26AH Nandu lithium iron phosphate battery is about 1700 yuan, and a 48V20AH group of lead batteries is less than 300 yuan for trade-in. In this comparison, the price advantage comes out.
A set of lead-acid batteries can be used for two years, that is, once every two years, five times in ten years, and only 1,500 yuan. After the lithium battery has a problem, it is a chicken rib, looking for after-sales warranty, and you also need to move out of the relevant national laws and regulations; No warranty, the value is so high, it's a pity to throw it away. Then make do with it, I don't know when the power will go out. It's hard!
2. Safety
The safety of lithium batteries is a big problem, but the safety of lithium batteries of big brands can be proven. I'd rather make it unusable than let the battery burst once. When we look at the lithium battery explosion in the news, they are all lithium batteries produced by small workshops. The lithium batteries produced by these small workshops are either used to eliminate second-hand lithium cells, or they are purchased from defective lithium cells (good cells are taken away by large factories first). The protection board is the protection board purchased online, and the security level is not enough.
3. Portability
Portability is one of the advantages of lithium batteries, which can be removed and charged indoors. Now that lithium batteries are prohibited from being charged indoors, the only advantage is gone.
Judging from the above points, at this stage, two-wheeled electric vehicles are still the most suitable to buy lead-acid, and the whole vehicle is only 2000 yuan, and a group of 48V26AH lithium iron phosphate batteries will cost 2000 yuan, and the actual charging 100 times will not work. If it is lead-acid, it is not a pity to throw it away directly and replace it with another set. But lithium batteries are not good, they are too expensive!
Therefore, it is highly recommended: when you buy an electric car, you should still lead acid! The price of lithium battery cars is expensive, the battery is not durable, it is difficult to complain, and the cycle is long!
This is a real car buying experience, a lesson in tears!