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  • How to Pick the Best Off Grid Inverter

    The first thing to think about is how much power you need.Fortunately, sizing off-grid inverters is straightforward if you know what appliances you’re going to use.Add up the wattage of all your lights and appliances to calculate the number of watts you’d need if everything was used all at once. (No, you’re not likely going to use everything, but this is an easy way to be safe.)Don’t forget to consider the voltage—although most appliances run on 120Vac, some appliances, such as well pumps, require 240Vac. Example: Let’s say you need 1,000 watts for your fridge, 500 watts for lights, and 200 watts for your phone & TV. That adds up to 1,700 watts. In this case, we’d suggest a minimum inverter size of at least 2,000 watts to give you a little extra headroom. (After all, you may add appliances in the future.) Look at the Technical SpecsHere are some other technical specs to consider:Efficiency. This is a measure of how much power from the batteries your inverter delivers to your home when it’s operating in perfect conditions. A good peak efficiency rating is around 94% to 96%.Self-consumption, or no-load current draw. How much power will your inverter consume just sitting there? Obviously you want this to be as low as possible.Surge capacity. How much short-term overload can the inverter handle before it “trips?” Some appliances, like pumps or fridges, need as much as 2x–3x their running power to start up.Battery charger output. Many off-grid inverters include a battery charger, which is used to recharge your batteries during the winter months with a backup generator. The battery charger will have a rating, usually measured in amps. Most decent off-grid inverters will have a battery charger in the range of 50-100 amps DC.Temperature range. Inverters are sensitive to extreme heat. Pay careful attention to the temperature range if you plan on installing your system in your garage or anywhere it could be exposed to temperature extremes.Warranty. Warranties start at 1 year and typically range from 3-5 years, with a few manufacturers offering a 10 year warranty extension option.

  • Lead Acid battery Replacement LiFePO4 battery

    Hebei Xindongli New Energy Science and Technology Co.,Ltd is a professional manufacturer specializing in the development and production of lithium-ion rechargeable batteries and power supply systems. Its founder has more than decade years of industry experience in the domestic battery industry, focusing on the application and supply of lithium ion, lithium iron phosphate (LiFePO4) batteries along with global technical support. The company's main products are the application of rechargeable lithium batteries and the development of cascade batteries. Mainly provide customized battery packs, power supply, power system and other related value-added services. Established in 2013, our products have passed IEC, CE, BIS certification and are widely used in solar energy storage system, UPS, communication base station energy storage, low-speed electric vehicles (such as electric tricycles, electric motorcycles, electric bicycles, golf carts), yachts, fishing boats, outdoor camping power supply, auxiliary power supply of household car/car, etc. With years of design and development experience, as well as good quality control system, our company provides customers with the best battery energy storage solutions.Xindongli New Energy lithium ion Phosphate (LiFePO4) Battery pack is designed as lighter-weight, longer-lasting replacement for lead acid batteries. Based on high quality LiFePO4 cells, the battery pack delivers higher power, greater energy density and increased safety to deliver superior performance and reduced operating costs as compared to lead acid for commercial applications.Long Life CycleXindongli New Energy LiFePO4 battery delivers more than 10 times longer cycle life and five times longer float/calendar life than lead acid. Which helps to minimize the replacement costs and reduce total cost for the commercial usage.Light WeightThe LiFePO4 battery weighs less than half of comparable lead acid batteries, providing customers with a lighter-weight solution to optimize their product design and avoid unnecessary over-sizing.High PowerLiFePO4 battery is capable to discharge at high current rates, while maintaining high energy capacity to maximize product performance. With the same capacity, LiFePO4 works longer time than lead acid.Stable and SaftyXindongli New Energy LiFePO4 technology offers excellent abuse tolerance, establishing a foundation of safety at the cell level. In addition, multiple system-level of protection are employed to deliver greater durability and reliability.

  • Opportunities and Challenges for Li ion Batteries

    The demand among 5G base stations for energy storage batteries provides the entire energy storage industry an excellent opportunity for development.  At a recent CNESA salon on 5G, Zhang Xin of East Group Co. expressed that establishing a 5G network requires many changes to the energy system. Aside from peak shaving strategies, efforts must also be made to prepare for increased system stability requirements.  Whether using a UPS to keep important devices powered on, or supporting energy intensive equipment during peak periods, energy storage can help to increase stability and increase the quality of the power supply.  In remote areas where the supply of grid electricity can be unreliable, energy storage is also a valuable supporting tool.Of course, for the energy storage industry, 5G presents both challenges and opportunities. One example is battery safety.  As Li Gang of Svolt expressed, 5G telecom stations have an electricity use rate 2-3 times that of 4G stations, and backup power requirements at least double that of 4G. High quality-to-price ratio second-life batteries are an obvious choice as a backup power supply source for 5G stations, yet in recent years safety concerns regarding battery energy storage have become more apparent.  Second-life batteries must place safety as priority.  Narada Power Assistant Chief Engineer Li Bingwen expressed that the industry must emphasize the safety of 5G energy storage, noting that all safety issues will be preceded by indicators which the BMS must be able to detect and react to by immediately isolating any problematic batteries before the possibility of fires or thermal runaway.During the forum, China Mobile Communications Design Institute Co. Research Consulting Director Li Yusheng commented on the problems facing energy storage batteries, stating that four requirements must be met when designing power sources for 5G stations.  First, multiple energy sources should be used, thereby strengthening the ability to provide stable electricity. Second, intelligent operations and maintenance, thereby increasing operations efficiency.  Third, digitalization of power for high density and efficiency.  Fourth, “intelligentization” of batteries to derive maximum value from the full battery life cycle.  Guo Qiming of Sacred Sun Co. also provided suggestions for 5G power sources, stating that what is first needed is LiFePo batteries that are highly safe, have high specific energy, small size, light weight, long lifespan, and a “smart” design.  Second is the introduction of “blade power supplies” to save space and provide low-cost, reliable operations.

  • Recharageable lithium ion battery pack for AGV vehicle Automated Guided Vehicle battery

    Recharageable lithium ion battery pack for AGV vehicle Automated Guided Vehicle batteryAGV vehicle refers to the transport vehicle equipped with electromagnetic or optical guidance devices, which can travel along the prescribed guidance path, has safety protection and various load shifting functions, and does not need a driver in industrial applications. Generally through the computer to control the route and behavior, or using the electromagnetic rail (electromagnetic path - following system) to set up the path, electromagnetic rail taped to the floor, AGV is rely on information brought by the electromagnetic rail for mobile and action, with the development of the society, AGV is more and more widely used, warehousing, manufacturing, and the post office, chemicals, dangerous situations, have been widely used.Especially in the field of automobiles. The main function of this product is to provide power energy for AGV vehicle. The power battery has the advantages of more cyclic charge and discharge times, low self-discharge rate, long service life, strong deep discharge capacity, high charging efficiency, strong power, strong earthquake resistance, little maintenance or no maintenance, etc. Advantages: small size, light weight, long life, high efficiency, deep charge and discharge, intelligent management, for your system to provide reliable, high-quality power.

  • How a lithium ion battery charges and discharges?

    As their name suggests, lithium ion batteries are all about the movement of lithium ions: the ions move one way when the battery charges (when it's absorbing power); they move the opposite way when the battery discharges (when it's supplying power):1. During charging, lithium ions (yellow circles) flow from the positive electrode (red) to the negative electrode (blue) through the electrolyte (gray). Electrons also flow from the positive electrode to the negative electrode, but take the longer path around the outer circuit. The electrons and ions combine at the negative electrode and deposit lithium there.2. When no more ions will flow, the battery is fully charged and ready to use.3. During discharging, the ions flow back through the electrolyte from the negative electrode to the positive electrode. Electrons flow from the negative electrode to the positive electrode through the outer circuit, powering your laptop. When the ions and electrons combine at the positive electrode, lithium is deposited there.4. When all the ions have moved back, the battery is fully discharged and needs charging up again.

  • What are the basic precautions for lithium battery charging?

    1. Avoid charging at too high a temperature If lithium is used above the required operating temperature of 35°C, the battery's power will be continuously reduced, which means the battery will not last as long as usual.If you have to charge the device at this temperature, the damage to the battery will be even greater.Even if the battery is stored in a hot environment, the battery quality will inevitably be damaged.Therefore, keeping the operating temperature at the optimum temperature is a good way to prolong the life of lithium. 2. Avoid charging at too low temperature If lithium battery is used in low temperature environment, that is, below 4°C, the battery life will also be found to be reduced, and the original lithium battery of some mobile phones can not even be charged in low temperature environment.But don't worry too much. This is just a temporary condition, unlike using it at high temperatures. Once the temperature rises, the molecules in the battery are heated, and the battery immediately returns to its previous charge. 3. Use it often Life is movement.To get the most out of lithium-ion batteries, you need to use them regularly, keeping the electrons flowing.If you do not often use lithium battery, please remember to complete a charging cycle for lithium battery every month, do a power calibration, that is, deep discharge deep charge.

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