In the photovoltaic energy storage system, the role of the battery is to store the electric energy, because the capacity of a single battery is limited, usually the system to multiple batteries through a series of combination, in order to achieve the design of voltage level and capacity requirements, so it is also known as the battery group. In the photovoltaic energy storage system, the initial cost of the battery bank and the photovoltaic module is similar, but the life of the storage group is lower. The technical parameters of the battery are very important to the system design. In the selection and design, attention should be paid to the key parameters of the battery, such as battery capacity, rated voltage, charge and discharge current, discharge depth, cycle times and so on.
MoreLet me start by saying the product isn't bad the replacement batteries have been in a few weeks and seem like they're holding up. However I ordered a 6 pack and was delivered a letter saying they're back ordered, not unusual. However delivery of the letter marked the order complete... But the batteries that made it seem to be doing ok
Mike
Very good product, I trust the range of products from the PLB battery manufacturer and I feel it is worth the money.
John M
Partial state of charge, known as PSOC, which is a killer of lead-acid batteries, does not affect performance or battery life of a lithium battery. Sometimes batteries don’t get fully charged, or they regularly operate in a partial state of charge. Either way, you can count on RELiON lithium batteries living a long and productive life.
Partial state of charge, known as PSOC, which is a killer of lead-acid batteries, does not affect performance or battery life of a lithium battery. Sometimes batteries don’t get fully charged, or they regularly operate in a partial state of charge. Either way, you can count on RELiON lithium batteries living a long and productive life.
Lead-acid batteries are typically sized up to two times your energy needs to account for extended periods without sun and less usable energy with higher rates of discharge. Plus, you are typically cautioned to limit your use to 50% of the rated capacity, as using more can significantly reduce performance. Lithium batteries provide 100% of their rated capacity, regardless of the rate of discharge. And, you can use it all and still get substantially longer cycle life.
PLB lithium batteries have super low resistance, allowing you to charge much faster. And lithium batteries are 99% efficient, minimizing the losses during charge. Compare that to traditional lead-acid batteries at 75-80% efficiency, which results in significant loss when recharging.
PLB lithium batteries provide up to 10 times longer life than lead-acid batteries, and they still provide 80% of rated capacity after 2,000 cycles. Spend more time powering your applications and less time replacing your batteries.
PLB lithium batteries are maintenance-free – no watering, no corrosion. Low self-discharge means the batteries don’t lose capacity when they’re idle, assuring that you have the energy you need, every time you need it.
PLB lithium batteries are the ultimate clean energy. No gassing, no fumes and no pollution. Enjoy reliable power while protecting the environment, using these non-hazardous batteries.
1. The lithium battery is small in size, light in weight, and easy to transport. Compared with the lithium battery energy storage system and lead-acid colloidal battery used in solar street lights, the weight is about one-third and the volume is about one-third. In this way, transportation is easier, and transportation costs naturally drop.
2. Lithium battery has high energy density and longer service life. Energy density refers to the amount of energy stored in a certain unit of space or mass. The greater the energy density of a battery, the more electricity can be stored per unit weight or volume. There are many factors that affect the service life of lithium batteries, and energy density is one of the most important internal factors.
3. Solar street lights using lithium batteries are easy to install. When installing traditional solar street lights, you need to reserve a battery pit, and use a buried box to put the battery in and seal it. The installation of lithium battery solar street lights is much more convenient, and the lithium battery can be directly installed on the bracket, using a suspended or built-in type.
4. Lithium battery solar street lights are easy to maintain. Lithium-ion solar street lights only need to take out the battery from the lamp pole or panel during maintenance, while traditional solar street lights need to dig out the batteries buried in the ground during maintenance, which is much more troublesome than lithium-ion solar street lights.
The main differences between ternary lithium batteries and lithium iron phosphate batteries in use are three aspects: life, safety and low temperature performance. If you want to say which ternary lithium battery or lithium iron phosphate battery is better for solar street lights, it depends on which battery is more advantageous in the application scenario.
1. Which scenarios are suitable for solar street light ternary lithium batteries
Compared with lithium iron phosphate, ternary lithium has the advantage of good low temperature performance, so solar street lights with ternary lithium batteries are more suitable for installation in low temperature areas.
At the same time, the consistency of ternary lithium is also very good, 12V, 24V solar light system can also use ternary lithium battery. Of course, whether it is ternary or iron-lithium, when making 12V 24V, not only good batteries, but also good technology and strict quality inspection are required.
2. Which scenarios are suitable for solar lithium iron phosphate batteries
Contrary to ternary, lithium iron can have better safety in relatively high temperature environments, so solar street lights with lithium iron phosphate batteries are more suitable for high temperature areas.
In areas with high safety requirements, such as near gas stations, industrial areas with flammable and explosive materials, etc., it is recommended to use lithium iron phosphate batteries.
Of course, because the consistency of iron-lithium batteries is slightly lower than that of ternary batteries, when making strings, high-quality batteries, better technology and quality inspection procedures are needed.
The life of lithium batteries is generally 300 to 500 charging cycles. Assuming that the power provided by a complete discharge is Q, if the reduction of power after each charging cycle is not considered, the lithium battery can provide or supplement a total of 300Q-500Q of power during its life. From this, we know that if you charge 1/2 every time, you can charge 600-1000 times; if you charge 1/3 every time, you can charge 900-1500 times. And so on, if charging randomly, the number of times is not fixed. In short, no matter how you charge it, a total of 300Q to 500Q of power is added to the battery. Therefore, we can also understand this: the life of lithium batteries is related to the total charging capacity of the battery, and has nothing to do with the number of charging times. Deep discharge and deep charge and shallow discharge and shallow charge have little difference in the impact of lithium battery life.
In fact, shallow discharge and shallow charge are more beneficial for lithium batteries. Only when the power module of the product is calibrated for lithium batteries, is it necessary to deep discharge and charge deeply. Therefore, products powered by lithium batteries do not have to stick to the process, everything is convenient, and they can be charged at any time without worrying about affecting their lifespan.
If the lithium battery is used in an environment higher than the specified operating temperature, that is, above 35°C, the power of the battery will continue to decrease, that is, the battery will not last as long as usual. If the device is charged at such a temperature, the damage to the battery will be even greater. Even if the battery is stored in a hot environment, it will inevitably cause corresponding damage to the quality of the battery. Therefore, trying to maintain a suitable operating temperature is a good way to extend the life of lithium batteries.
If the lithium battery is used in a low temperature environment, that is, below 4°C, the battery life will also be reduced, and the original lithium battery of some mobile phones cannot even be charged in a low temperature environment. But don't worry too much, this is only a temporary situation, different from the use in a high temperature environment, once the temperature rises, the molecules in the battery are heated and immediately return to the previous power level.
To get the most out of a lithium-ion battery, you need to use it frequently so that the electrons in the lithium-ion battery are always in a state of flow. If you do not use the lithium battery often, please remember to complete a charging cycle for the lithium battery every month and do a power calibration, that is, deep discharge and deep charging.
The formal name is "charge-discharge cycle", which is not equal to "charge times". The cycle refers to the time when the battery is fully charged to run out. This is a cycle. If your battery is fully charged, one tenth is used. This is a tenth of a cycle, so 10 times of charging is basically a cycle. Similarly, from fully charged, half used and then fully charged, and then half used and then fully charged, this is also a cycle. At this time, you have charged twice. So, the cycle only depends on "how much power is discharged from the battery", and has no direct relationship with "number of charges".
Moreover, the nominal number of charge and discharge cycles does not mean that it cannot be used after it is used up, but after so many cycles, the ability of the battery to store electricity will drop to a certain extent, such as a lithium battery, the nominal charge and discharge The cycle is "not less than 60% of the nominal capacity after 500 cycles", that is, after 500 cycles, the battery can only store as much power as 60% of the new battery at most, and the performance has dropped to a certain extent. This means that there is no fixed charge limit for lithium batteries. The batteries from regular manufacturers can generally be charged and discharged at least 500 times, and the capacity is maintained at more than 80% of the initial capacity. One charge a day can be used for 2 years. Usually, the mobile phone battery is charged 1000 times, which will cause the battery to be seriously insufferable.
1, or replace the lead-acid battery, dig out the battery, open the waterproof box, and replace the lead-acid battery. About the cost of replacing a street lamp: labor 80 yuan / light, lead-acid battery is 8 yuan per AH, 80AH is about 640 yuan.
2. Replace the original battery with lithium battery, and don't need the original controller and lead-acid battery. The lithium battery is directly fixed under the solar panel with a stainless steel waterproof box. Just connect the solar panel cable, the lamp and the lithium battery cable. The cost of replacing a solar street light is about 80 yuan per lamp, and the lithium battery is about 600 yuan with 40AH/12V. The stainless steel box is 120 yuan, which is a little higher than the cost of lead-acid batteries. But the use effect is good, the lifespan is 5-6 years.
3. Replace it with an integrated lithium-ion lamp, and directly connect the waterproof connector of the integrated lithium-ion lamp to the solar panel. Do not have the previous lamps, batteries, controllers. The replacement cost of such a lamp is 80 yuan for labor and 500 yuan for integrated lithium-ion lamps. At present, Mingdian Electronics mostly adopts this method.
Solar lithium battery Buying Guide
Solar lithium battery Buying Guide
Solar lithium battery Buying Guide
Solar lithium battery Buying Guide
Investing in solar is smart; pairing solar with a lithium battery storage unit is even smarter. While lithium batteries tend to be a higher initial investment than lead-acid batteries, their superior performance and longevity make them an ideal choice for off-grid and grid-tie applications.
