Lithium Battery for Solar Street Lamp
With the increasing scarcity of global resources, the protection of non-renewable energy has become the top priority. The development and utilization of renewable energy has finally been put on the agenda. At present, China strongly supports the development and utilization of solar energy, and has issued some relevant policies. Now there are more and more solar products on the market, solar street lamp is one of them. Speaking of solar street lamp, many people will think that its price is very expensive. Indeed, in terms of purchase price, it is much more expensive than ordinary street lamp, but in terms of comprehensive later maintenance and energy saving, the comprehensive price of solar street lamp is much lower than ordinary street lamp.
we don't know when it start that many people always think that the higher the capacity of lithium batteries, the better. But is there really such a large capacity of lithium batteries? 18650 lithium batteries, imported large brands only 18650 product capacity up to the present mass production can reach * capacity of 4100 mAh, domestic generally hovering around 2600 mAh. According to the currently generally labeled total capacity, for example, 20,000 mAh, even using imported products also requires five parallel processes. Small, light and portable, 30,000 mAh, 50,000 mAh at any moment, at first glance, we know that it is fraudulent, and even more offensive to mislead consumers with product models, such as 50,000 M, only to know that the original 50,000 M is the product model, not the capacity.
The series-parallel combination of 18650 lithium batteries has a high requirement for the consistency of lithium battery itself. If a single lithium battery has internal problems, such as low voltage of one of the lithium batteries in the lithium battery pack, it will inevitably pull down the voltage value of the whole lithium battery pack and increase the internal resistance. If the original current/ voltage is still used for charging, it will probably cause the thermal explosion. This is also the case for lithium-polymer lithium batteries, except that lithium-polymer lithium batteries will not explode compared with 18650 lithium batteries encapsulated in steel shells, but will inevitably burn. So the lithium battery capacity labeled on the product is not the bigger the better.
In addition, even if it meets the capacity label, how much power can actually be provided? In order to more intuitively explain the illegal deal, we take emergency power supply - talking. The capacity of lithium batteries represents the amount of electricity that lithium batteries can provide. Just like water pools, the larger the storage capacity of water pools, the process of charging and discharging is just like the process of water storage and discharging of water pools. There must be a pressure difference to form water flow. To charge 3.7V lithium batteries, 3.7V voltage will not be able to charge them, and higher voltage will be required. The standard voltage lithium batteries labeled 10,000 mAh are all 3.7V lithium batteries. When charging the same 3.7V lithium batteries (most lithium batteries currently use lithium batteries with the same 3.7V voltage), the conversion rate of lithium batteries with "booster plate" is 91% (except for USB-C). This is still a good lithium battery. In fact, the output can provide the following formula:
(where C represents 5V effective output capacity and C1 represents lithium battery capacity)
That is to say, the output power of lithium battery with capacity of 10,000 mAh can only be 6,700 mAh calculated according to * in actual use. Don't be fooled any more. Conscientious merchants will mark the capacity of lithium battery and the effective output capacity (actual available capacity) at the same time.
Today, the use of lithium batteries has developed into the solar street lamp industry, replacing lead-acid and colloidal storage batteries. How to use lithium batteries is very important for prolonging the life of solar street lamp. What is the correct way to use lithium batteries for solar street lamps?
The principle of recharging lithium-ion batteries for solar street lamps after using out of the rest power is not to lead you go to extremes. One of the most popular phrases, like long charging, is "to run out of lithium batteries as much as possible". It's actually just a nickel battery approach to avoid memory effects. Unfortunately, it's also popular on lithium batteries today.
Lithium batteries are easy to activate. They can be activated and their normal capacity can be restored after 3-5 normal charging and discharging cycles. Because of the characteristics of lithium battery itself, it has almost no memory effect. Therefore, in the activation process of lithium batteries, there is no need for special methods and equipment. From the beginning, the "natural activation" of lithium batteries is charged by standard methods.
LED lighting is an absolute trend, there is no turning back. At first, many people jumped into this industry, but many people died. Because the threshold of LED lighting system assembly is not very high, everyone is grabbing this market. By contrast, the position of billions of light in the upstream and upstream of LED is more important. LED road lamp is energy-saving, long life, small size and mercury-free. The essence of the LED road for the next generation is an indispensable and important step in the global environment.
The principle of recharging after the battery has run out is not to go to extremes. One of the most popular phrases, like long charging, is "to run out of lithium batteries as much as possible". It's actually just a nickel battery approach to avoid memory effects. Unfortunately, it's also popular on lithium batteries today.
Solar cell components generally choose single crystal silicon or polycrystalline silicon solar cell components; LED lamp holders generally choose high-power LED light sources; controllers are generally placed in the lamp pole, with light control, time control, overcharge and overdischarge protection and reverse connection protection, and more advanced controllers are equipped with four seasons to adjust the lighting time function, half-power function, intelligent charging and discharging function, etc. If placed underground, there will be a special storage battery incubator. Valve-regulated lead-acid batteries, colloidal batteries, iron-aluminium batteries or lithium batteries can be used.
In conclusion, the important hints for the charging and discharging of lithium-ion batteries for solar street lamps are as follows:
1. Charge according to standard time and procedure, even the first three times.
2. When there is a hint of low power, charging should be started as soon as possible.
3.The activation of lithium-ion batteries does not need special methods. In the normal use of mobile phones, the lithium-ion batteries will activate naturally. If you insist on using the popular "first three 12 hours long charge activation" method, it will not actually work.
If you can't find a battery that meets your requirements on this page, please contact us for more information about our custom battery packs.
18650 12V 12500mAh
Product Description：Geilienergy energy storage battery 18650*15 12V 12500mAh. It consists of 15 18650 3.7V 2500mAh cores. The core has high energy density. Core configuration requires a voltage difference of 0.006V, a capacity difference of 20mAh and an internal resistance difference of 5mΩ.The cell size is high: <70.5mm wide: <148mm thick: <36.5mm. The products are widely used in solar lamp, stage lamp, lighting equipment, spare power supply and other fields.
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