As the “energy source” of various electronic smart devices that we are most familiar with, lithium solar cells are widely used in applications, not only in mobile phones, computers and other smart hardware. Nowadays, more and more electric bicycles remove lead acid. In addition, lithium solar cells are generally used as the main power source. Therefore, it is not an exaggeration to say that lithium solar cells are the existence of “high quality and low price” in the battery industry. But here comes the question: Are lithium solar cells really irreplaceable?
In fact, in terms of cost or price, lead-acid batteries are cheaper than the high cost of lithium batteries, aren’t they? At the price of 2-300 yuan, you can replace the lead-acid battery for your electric car at any time, which is quite cost-effective. But everyone knows that lead-acid batteries also have some shortcomings. For example, lead-acid batteries have a relatively short battery life due to their low energy density, and their lifespan is not long enough. The battery is cycled 300-500 times and needs to be replaced after 2-3 years of use. New, so if you want to provide more powerful power for electric vehicles, lead acid is obviously not the first choice.
Let’s talk about the nickel-hydrogen battery that is also mentioned by people. Indeed, compared with the low energy density and short battery life of lead-acid batteries, nickel-hydrogen batteries have stronger energy density and battery performance. For example, the power of a nickel-metal hydride battery of the same volume is almost double that of a lead-acid battery, and the battery life is longer, it is lighter to carry, and the battery can be cycled for thousands of times, which is quite powerful. But in the same way, the shortcomings of nickel-metal hydride batteries – memory effect, overcharge and over-discharge will make the battery capacity deteriorate repeatedly, so if you want to be the ideal battery power for electric vehicles, nickel-metal hydride batteries are also not the first choice.