The Kynix Blog - Battery

As of the model year 2017, BMZ GmbH offers a warranty of four years on e-bike batteries to the customers of the bicycle purchasing cooperative. For this purpose, BMZ and ZEG have signed a service agreement. According to the agreement, BMZ offers a warranty to the buyers of ZEG e-bikes that their batteries will have a residual capacity of more than 60% after a period of 48 months.This means, if a customer rides his e-bike for a distance of 100 kilometres today, he can still ride it for 60 kilometres under the same conditions after four years. BMZ offers a warranty of 24 months to commercial dealers.The date of purchase by the end customer is key when it comes to asserting warranty claims. Proper handling of the batteries and chargers, for which there is a 24-month warranty, is a prerequisite for granting the warranty. A comprehensive warranty agreement, which will be sent to the dealers separately, specifies all the details.BMZ and ZEG are linked by a long-standing partnership. ZEG, the Zweirad-Einkaufs-Genossenschaft eG is an association of 960 independent bicycle dealers. It offers uniquely favourable sales and purchasing opportunities and maintains business relations with all renowned brands of bicycle manufacturers. For half a century, ZEG has been synonymous with quality and reliability.Process-oriented quality management and product quality have been taking centre stage at BMZ since the company was established in 1994. It is the foundation for outstanding products and business excellence. With innovative and high-quality products, BMZ is known for maximum sustainability.Reference:1215F101215F2X21215F2X4 

Scientists have spent decades searching for a safe alternative to the flammable liquid electrolytes used in lithium-ion batteries.Now Stanford University researchers have identified nearly two-dozen solid electrolytes that could someday replace the volatile liquids used in smartphones, laptops and other electronic devices. The results, based on techniques adapted from artificial intelligence (AI) and machine learning, are published in the journal Energy & Environmental Science."Electrolytes shuttle lithium ions back and forth between the battery's positive and negative electrodes," said study lead author Austin Sendek, a doctoral candidate in applied physics and first author on the paper. "Liquid electrolytes are cheap and conduct ions really well, but they can catch fire if the battery overheats or is short-circuited by puncturing."Battery fires led to the recent recall of nearly 2 million Samsung Galaxy Note7 smartphones, the latest in a series of highly publicized lithium-ion battery failures."The main advantage of solid electrolytes is stability," Sendek said. "Solids are far less likely to blow up or vaporize than organic solvents. They're also much more rigid and would make the battery structurally stronger."Searching for solidsDespite years of laboratory trial and error, researchers have yet to find an inexpensive solid material that performs as well as liquid electrolytes at room temperature.Instead of randomly testing individual compounds, the team turned to AI and machine learning to build predictive models from experimental data. They trained a computer algorithm to learn how to identify good and bad compounds based on existing data, much like a facial-recognition algorithm learns to identify faces after seeing several examples."The number of known lithium-containing compounds is in the tens of thousands, the vast majority of which are untested," Sendek said. "Some of them may be excellent conductors. We developed a computational model that learns from the limited data we already have, and then allows us to screen potential candidates from a massive database of materials about a million times faster than current screening methods."To build the model, Sendek spent more than two years gathering all known scientific data about solid compounds containing lithium."Austin collected all of humanity's wisdom about these materials, and many of the measurements and experimental data going back decades," said Evan Reed, an assistant professor of materials science and engineering and a senior author on the paper. "He used that knowledge to create a model that can predict whether a material will be a good electrolyte. This approach enables screening of the full spectrum of candidate materials to identify the most promising materials for further study."Screening criteriaThe model used several criteria to screen promising materials, including stability, cost, abundance and their ability to conduct lithium ions and re-route electrons through the battery's circuit.Candidates were selected from The Materials Project, a database that allows scientists to explore the physical and chemical properties of thousands of materials."We screened more than 12,000 lithium-containing compounds and ended up with 21 promising solid electrolytes," Sendek said. "It only took a few minutes to do the screening. The vast majority of my time was actually spent gathering and curating all the data, and developing metrics to define the confidence of model predictions."The researchers eventually plan to test the 21 materials in the laboratory to determine which are best suited for real-world conditions."Our approach has the potential to address many kinds of materials problems and increase the effectiveness of research investments in these areas," Reed said. "As the amount of data in the world increases and as computers improve, our ability to innovate is going to increase exponentially. Whether it's batteries, fuel cells or anything else, it's a really exciting time to be in this field."Reference:1215F101215F2X31215F6 

Instead of ordering batteries by the pack, we might get them by the ream in the future. Researchers at Binghamton University, State University of New York have created a bacteria-powered battery on a single sheet of paper that can power disposable electronics. The manufacturing technique reduces fabrication time and cost, and the design could revolutionize the use of bio-batteries as a power source in remote, dangerous and resource-limited areas."Papertronics have recently emerged as a simple and low-cost way to power disposable point-of-care diagnostic sensors," said Assistant Professor Seokheun "Sean" Choi, who is in the Electrical and Computer Engineering Department within the Thomas J. Watson School of Engineering and Applied Science. He is also the director of the Bioelectronics and Microsystems Lab at Binghamton."Stand-alone and self-sustained, paper-based, point-of-care devices are essential to providing effective and life-saving treatments in resource-limited settings," said Choi.On one half of a piece of chromatography paper, Choi and PhD candidate Yang Gao, who is a co-author of the paper, placed a ribbon of silver nitrate underneath a thin layer of wax to create a cathode. The pair then made a reservoir out of a conductive polymer on the other half of the paper, which acted as the anode. Once properly folded and a few drops of bacteria-filled liquid are added, the microbes' cellular respiration powers the battery. "The device requires layers to include components, such as the anode, cathode and PEM (proton exchange membrane)," said Choi. "[The final battery] demands manual assembly, and there are potential issues such as misalignment of paper layers and vertical discontinuity between layers, which ultimately decrease power generation."Different folding and stacking methods can significantly improve power and current outputs. Scientists were able to generate 31.51 microwatts at 125.53 microamps with six batteries in three parallel series and 44.85 microwatts at 105.89 microamps in a 6x6 configuration.It would take millions of paper batteries to power a common 40-watt light bulb, but on the battlefield or in a disaster situation, usability and portability is paramount. Plus, there is enough power to run biosensors that monitor glucose levels in diabetes patients, detect pathogens in a body or perform other life-saving functions. "Among many flexible and integrative paper-based batteries with a large upside, paper-based microbial fuel cell technology is arguably the most underdeveloped," said Choi. "We are excited about this because microorganisms can harvest electrical power from any type of biodegradable source, like wastewater, that is readily available. I believe this type of paper biobattery can be a future power source for papertronics."The innovation is the latest step in paper battery development by Choi. His team developed its first paper prototype in 2015, which was a foldable battery that looked much like a matchbook. Earlier this year they unveiled a design that was inspired by a ninja throwing star.Reference:AFPG804TL-5276/WAFPX-BATT 

An infographic has been published by Accutronics, offering guidelines for Original Equipment Manufacturers on what should be considered when specifying a rechargeable smart battery to power their next product. The infographic highlights the importance of considering batteries at the earliest possible stage in the development process. Accutronics believes the most common and most costly mistake a design engineer can make when choosing a power source is leaving specification until it's too late.With smart batteries becoming increasingly common in industries such as medical and military, the demands placed on them are also becoming increasingly challenging. The infographic highlights the key features a design engineer or purchasing team should look for in a smart battery, including fuel gauging which can provide accurate state of charge prediction regardless of temperature, load and age. An accurate fuel gauge provides confidence whilst an inaccurate gauge can result in ‘runtime anxiety’ with the user constantly in fear that their device will run out of power. If the device is being used in a medical or mission-critical military application then the premature depletion of battery power could have severe implications.Other essential features include protection circuitry which prevents the battery cells from being over-charged, over-discharged, or operated at extreme temperatures. Smart power management ensures the battery only receives charge when it is required - this enhances both the life and safety of the battery. The ability for the battery to operate under differing power modes also allows it to hibernate when it is stored, maximising the shelf-life of batteries which may be in the supply chain for prolonged periods.“As the complexity of battery powered applications increases, OEM buyers need to ask themselves how fit for purpose their current design methodology is," explained Michele Windsor, Global Marketing Manager for Accutronics and Ultralife. “By choosing a smart battery, OEMs can rest assured that their device will continue to deliver optimum performance in a variety of applications. Whether it's the reliability and security demanded in the medical industry, or the extreme temperatures and harsh conditions faced in military and defence use, smart batteries can step up to any environment.“Because smart batteries are used in many life-critical situations, we’re also concerned about the rise of counterfeiting in the battery industry. Counterfeit batteries may be built using inferior battery cells and often lack the critical protection electronics which are required to make them operate safely. Also, a lack of quality control during manufacture, or forged regulatory certification means that fake batteries could prove costly for many OEMs."The infographic also highlights the importance of selecting a battery with built in digital algorithmic security, which can be used by a host device or charger to ensure that that the installed battery is the genuine article.”Reference:BHSD-2032-COVERBI-UM-3-4BC2/3AC

It's a summer night in 2025, and suddenly a power cut strikes. Naturally, you expect your ceiling fan to keep spinning, but instead, it slows to a halt. When you check your power backup system, you find the inverter body is excessively hot to the touch. Worse yet, the battery itself feels dangerously warm. This overheating issue is a common challenge in modern households with increasing energy demands. However, there is no need to panic; with the right maintenance strategies, you can resolve this heating problem and extend your system's lifespan.Here are some professional solutions for the inverter battery overheating problem:1. Monitor the maximum load capacity:Overloading is a primary cause of battery overheating. If your power draw exceeds the inverter's rated capacity, internal resistance spikes, generating excess heat. Read your instruction manual to note the optimum load capacity. In 2025, many "Smart Inverters" feature LCD displays or mobile apps that show real-time load percentage—use these tools to ensure your connected devices never exceed the maximum limit.2. Inspect your connections for resistance:Faulty wiring is a silent fire hazard. Loose connections between the inverter, the mains, and the battery terminals create electrical resistance, which manifests as heat. You must check these connections frequently. Ensure nuts and bolts are tightened securely and that current is flowing without obstruction to prevent unnecessary thermal buildup.3. Optimize charging cycles (Avoid Deep Discharge):Older advice suggested fully discharging batteries, but for modern Lead-Acid and Tubular batteries, frequent deep discharging significantly shortens their lifespan and increases heat during recharge. Instead, aim for shallow cycles. Ensure your battery is fully recharged after use. If you anticipate a long period of inactivity, reliable charging habits prevent the hardening of electrolytes (sulfation), which is a leading cause of overheating.4. Eliminate corrosion on battery terminals:Carbon buildup and rust on battery terminals act as insulators, forcing the system to work harder and generate heat. regularly inspect your terminals for white or greenish deposits. Clean any corrosion using a solution of hot water and baking soda with an old toothbrush. Once clean and dry, apply a thin layer of petroleum jelly (Vaseline) to the terminals to seal them against future oxidation.5. Maintain electrolyte levels with distilled water:For Flooded Lead-Acid or Tubular batteries, electrolyte loss is natural over time. Low water levels expose the lead plates, causing rapid overheating and permanent damage. Check the water level indicators once a month. Top up *only* with distilled water to the specified mark. Note: Never use tap water, as impurities will damage the cells. If you use Sealed Maintenance Free (SMF) or Lithium batteries, this step does not apply.6. Ensure proper ventilation:Placement is critical. Batteries emit heat during charging and discharging. If they are stored in a closed cabinet or a room with poor airflow, that heat accumulates. The ideal operating temperature for most inverter batteries is around 25°C (77°F). Ensure there is at least 6 inches of clearance around the unit for air circulation to dissipate heat effectively.Leading manufacturers like Microtek have updated their technology for [Current Year] to include smart thermal management and high-efficiency designs. investing in these modern, sustainable power sources can provide a pocket-friendly solution that minimizes maintenance faults. 

Today, more and more people prefer lead crystal batteries over lead acid batteries. This is because of the unparalleled advantage that they offer in comparison. Some of them are – Longer Battery Life Acid batteries come in varied designs suitable for different applications. Some come as Cyclic Batteries which are designed to cycle, but others are so designed that that can give out high currents for short duration of time. The applications make the designs differ. A typical acid battery can charge and discharge for an average of about 300-350 cycles. In contrast, if they are replaced by lead-crystal batteries and keep the other conditions same, the output would be about 700-800 cycles. Thus lead- to crystal batteries show almost double performance and have a longer life of about 7 to 10 years which is highly cost effective and better alternative. Shelf Life Compared to acid ones, lead-crystal batteries discharge much slower when fully charged and are either stored or transported. These batteries can be immediately put to use even after as long in storage conditions as two years. They need not be charged like the acid ones require. The 2V series retains 99.9% of the capacity even though they have not been used for over 2 months. This makes the logistics much simpler as one is freed from the responsibility of cycling the batteries in stock to be charged every couple of months. The High Rate Discharge Lead crystal batteries have special technology which facilitates high-rate discharge characteristics. Compared to the acid varieties which work optimally at discharge rates of only 3C, the lead crystal battery discharge can work optimally even at discharge rates of 10C. Excellent Performance in Terms of Charge The time taken by a lead crystal battery is only 20% of the time required by the old normal lad batteries. This improves the battery efficiency and maintenance dramatically. Depth of Discharge The lead crystal battery can be easily restored to a full rated capacity with ease even after it has been discharged to 0 Volt which may not be possible with the acid ones. There is a high probability that the acid ones may die and not recover under the circumstances. Thus the usable battery capacity of a lead crystal battery is much higher. Low Temperature Resistance The crystal ones lead batteries can function to satisfaction in a temperature range of -40 to +50 degrees Celsius. They exhibit more 85 % of its rated capacity even at minus 40 degrees Celsius where the acid ones have shown a sharp decline in ability to discharge. Green Manufactured from new materials, new processes and new formulations, lead crystal batteries are more environmentally friendly and pollution free. They do not ooze mist or emit harmful gases, unlike the acid batteries.