5G Technology World: Battery Backup Chemistries for 5G Small-Cell Sites

As the number of cell sites increase and their sizes decrease, engineers have options to consider for battery backup. Differing battery chemistries offer more choices and different performance levels. Selecting the right battery chemistry for each application is critical to ensure reliable, long lasting, and cost-effective power delivery. Green Cubes Engineer JD DiGiacomandrea discusses the attributes that affect battery selection in an article published by 5G world.

Read the full article in 5G Technology World

Green Cubes Technology Announces Membership in CircuBAT Research Program

KOKOMO, INDIANA March 31, 2022 – Green Cubes Technology, a leader in electrification and Lithium power solutions, today announced its participation as a founding member in CircuBAT. CircuBAT is a Swiss research program that aims to create a Swiss circular business model for the production, application, and recycling of Lithium-ion batteries. Seven Swiss research institutions and 24 companies are joining forces to look for ways to boost sustainability in all stages of a battery’s life cycle.  

CircuBAT will focus on finding solutions that boost sustainability in all phases of a Lithium-ion battery’s life cycle. This will include extending the lifespan of batteries during their first application. Researchers hope to achieve this by developing optimal charging and discharging strategies as well as new concepts for battery construction that make repairs easy. The project also aims to put batteries to use as stationary energy storage systems after they are retired from their first mobility-related application. To that end, CircuBAT will look at the best ways of integrating these batteries at a local level and ensuring their safe and efficient operation. Finally, the researchers will look for solutions for remanufacturing batteries and recovering materials that enable large quantities of high-quality secondary raw materials to be used to produce new batteries.

Bern University of Applied Sciences BFH is the Leading House in the CircuBAT project. On the science side, an additional six Swiss research institutions are involved in the project: Empa, the Swiss Center for Electronics and Microtechnology (CSEM), the University of St. Gallen (HSG), the Eastern Switzerland University of Applied Sciences (OST), the Switzerland Innovation Park Biel / Bienne (SIPBB) and the EPFL (Swiss Federal Institute of Technology). These institutions are joined by 24 companies from economy and industry, among them Kyburz, LeClanche, Buhler and Green Cubes Technology.

As a founding member of CircuBAT, Green Cubes Technology has made a multi-year financial investment in the program. The company will also contribute first-use lithium-ion batteries for experimentation and testing within the program, provide engineering design services to develop new more-efficient batteries, and contribute intellectual property to achieve the objectives of CircuBAT.

Green Cubes Technology will participate in two working groups. The “First Use” group will focus on extending the life of first-use batteries through extensive analysis of deployed batteries in the field. Green Cubes Technology will contribute performance data collected from its prolific installed base of Lithium-ion batteries. The “Second Life” group will focus on creating second-use and second-life opportunities to minimize the total CO2 footprint of lithium-ion battery systems during their lifetime.

Since its inception 30 years ago, Green Cubes Technology has gained considerable experience minimizing the environmental impact of its deployed batteries. This positive impact will be amplified with a system of second life batteries, where the installed base of first use batteries is redeployed when they reach a certain age limit. The Lithium-ion cells used in Green Cubes Technology’s batteries are non-toxic, and are currently recycled and reprocessed at their end of life. Going forward, these cells can be repurposed into less demanding second life applications such as backup energy storage.

“We joined the CircuBAT research program because its mission is very well aligned with ours,” said Keith Washington, CEO of Green Cubes Technology. “We all want the same thing and that is a circular economy for Lithium-ion batteries. We are looking forward to sharing our experience, and giving electric mobility batteries a second life with our Swiss partners in the CircuBAT research program, as they strive to make the Swiss economy as sustainable as possible”.

More information on the research program can be found on its website: https://circubat.ch/

About Green Cubes Technology

Green Cubes Technology develops and manufactures safe and reliable electrification solutions that enable its OEM and enterprise customers to transition from Lead Acid and Internal Combustion Engine (ICE) power to Lithium-ion battery power. Green Cubes utilizes proven hardware and software platforms to build the most reliable Lithium power solutions in its industries. With over 300 employees across six countries, Green Cubes has been producing innovative, high-performance and high-quality power solutions since 1986.

Green Cubes Technology Announces Motive Battery Charger Product Line

KOKOMO, INDIANA March 15, 2022 – Green Cubes Technology (Green Cubes) introduces the Lithium SAFEFlex Chargers to complement its market leading Lithium SAFEFlex Batteries. Green Cubes is the only manufacturer to offer enterprises both Lithium-ion batteries and affiliated chargers to the Material Handling industry, thus simplifying the electrification of Material Handling equipment. These chargers are offered in 15 Kilowatt (kW) and 30 kW models. Each model supports up to three simultaneous charging ports and performs voltage auto-detect for each of the charging ports. Efficient charging of multiple trucks lowers utility costs for enterprise customers.  

Material Handling Charger available in 15kW & 30 kW models
with 1, 2 or 3 outputs

Green Cubes’ state-of-the-art Lithium SAFEFlex chargers employ high-frequency battery charging technology for the most compact and efficient design, as well as the widest voltage range available on the market today. Multiple outputs and automatic voltage detection via CAN communication enable simultaneous charging of multiple trucks with a single utility connection. The chargers have universal AC power input, a touchscreen display and remote management with embedded Internet of Things (IoT) that provides real-time performance information of each charge session with a battery. Local and remote administrative staff can review and manage charger/truck integration and overall fleet performance in real-time.  

3 output model shown here with cables and accessories

“Green Cubes is leading the charge in the electrification of Material Handling equipment,” said Jeffrey VanZwol, Chief Marketing Officer of Green Cubes. “We continue to innovate and offer disruptive products that not only offer superior total cost of ownership, but also minimize the environmental footprint for our enterprise customers.”  

“We are excited to offer a more comprehensive power solution for our customers and partners,” explains Robin Schneider, Director of Marketing. “The modular design allows an entire fleet, from 24V pallet jacks to 80V forklifts, to be serviced with a single charger product that delivers opportunity charging around the clock.” 

Lithium SAFEFlex Chargers are available in 15 and 30 kW models with 1, 2 or 3 outputs to charge 24, 36, 48, 72, 80 and 96 Volt Lithium-ion batteries.  The operating temperature range from -4F to 122F allows for operation in a wide range of environments.   Green Cubes will highlight its complete portfolio of Lithium power solutions for the Material Handling industry, including the Lithium SAFEFlex Chargers and Lithium-ion batteries, at Modex 2022 in booth B7229.  Additionally, Green Cubes will present the future of Lithium power solutions at the event titled, “From the State-of-the-Art to the Future of Lithium-ion Power for Industrial Trucks” on Wednesday, March 30 at 10:30 in Theater H.

To learn more about the chargers visit  https://greencubestech.com/product/lithium-safeflex-chargers-fbc-series/ or watch the video https://www.youtube.com/watch?v=VELZJeX3vNI.

Forklift Action: Opportunity Charging with the State-of-the Art SAFEFlex Chargers

Opportunity charging is a practice applicable to both Lead Acid and Lithium-ion (Li-ion) batteries for motive power systems and especially useful for Material Handling (MH) Equipment. Fast charging is a key differentiator for Lithium- ion batteries. Because the chemistry allows fast charging without damaging cycle life, Green Cubes’ Lithium SAFEFlex Li-ion batteries can be charged opportunistically during breaks and don’t require battery swaps.

Our state-of-the-art Lithium SAFEFlex chargers employ high-frequency technology for the most compact, efficient for the widest voltage range available on the market today. Multiple outputs and automatic voltage detection via CAN communication enable simultaneous charging of multiple trucks with a single utility connection.

Read the complete article at Forklift Action.

IEEE Xplore: Chemistry Options for Lithium-Ion UPS and BBU Ion

Industrial rack-mounted uninterruptible power supplies (UPS) or battery backup units (BBU) are used in data centers or telecom central offices to provide backup power for servers and switching equipment in the event of power failure. Historically, these UPS’s have relied on lead-acid as the predominant battery type. Currently, lithium-ion (Li-ion) batteries are gaining market share over the incumbent lead-acid battery technology. To differentiate UPS from BBU power sources, we define a typical UPS as double-conversion with ac-dc-ac power conversion, while BBU is the embedded battery with dc voltage input and output. While the input/output of a UPS is more universal by providing either single-phase 120–240 VAC or three-phase 208–480 VAC, the BBU dc output voltage is typically matched to the equipment it is powering. DC powered equipment is gaining acceptance in multiple industries for the simplicity, and efficiency. More and more installations are relying on BBU’s and dc plants to power their equipment directly. Figure 1 presents a BBU and a dc plant installed in a telecom rack with space for other equipment that needs a backup power source.

Read the full article in IEEE Xplore

The New Warehouse: EP 252: Battery Talk 2022

A podcast hosted by Kevin Lawton.

On this episode I was joined by not one but five guests! I call this one battery talk Robin Schneider of Green Cubes joins Kevin Lawton, Harold Vanasse of Enersys, John Gelsimino of Arcon Equipment, David Suarez of One Charge and Chris French of PowerBattUSA for a podcast discussion on the current state of batteries in the material handling industry including challenges with lithium-ion and sustainability of lithium-ion.

Listen to the podcast at The New Warehouse.

Material Handling Wholesaler: Lithium-ion Threatens Lead-Acid Batteries Dominance in Material Handling

For decades, lead-acid batteries were one of the only games in town as a source of power for material handling equipment such as forklifts and pallet jacks. But rapid advances in technology are fueling a broader playing field, with options that now include lithium-ion batteries, thin plate pure lead batteries, repurposed lithium-ion products, and an additive that can double the life of lead-acid batteries.

Warehouse managers, meanwhile, simply want a power source that is affordable, maintenance free and requires zero downtime. To be sure, lead acid is still the dominant battery in use in material handling equipment, primarily because of its affordability.

It’s also easier just to keep the status quo, said Maxim Khabur, marketing director at One Charge of Garden Grove, Calif. “The change requires energy and a capacity to embrace risk, so once the first-comers seize the most benefits, the rest have to follow after they realize they are losing on cost and effectiveness of operations,” Khabur said. “The change in charging pattern calls for new small chargers to be installed around the facility instead of getting them all into a ventilated charging room (not needed anymore), and however small the change is, it presents an argument for “not changing anything.”

Read the complete article starting page 6 in Material Handling Wholesaler – Feb 2022

Green Cubes Technology Awarded Patent for Modular Batteries for Medical and Industrial Mobile Workstations

KOKOMO, INDIANA 15 Dec, 2021 – Green Cubes Technology (Green Cubes), the leader in producing Lithium-ion (Li-ion) power systems that facilitate the transition from lead acid batteries and Internal Combustion Engine (ICE) power to green Lithium-ion (Li-ion) battery power, today announced the patent award for modular Lithium-ion batteries for medical and industrial mobile workstations. These battery modules simplify transportation and disposal of Lithium-ion batteries.

The patent specifies a method of utilizing battery modules to build a scalable power system within the base of a mobile workstation. This modular approach enables the workstation operator to 1) select multiple increments of battery power for the workstation, 2) physically ship battery modules using less restrictive Department of Transportation (DoT) regulations, and 3) more easily dispose of the battery modules once they reach their end of life. When a traditional Lithium-ion battery in a mobile workstation reaches its end of life, it cannot be readily recycled because they weigh more than the typical eleven-pound threshold imposed by battery recyclers.

As indicated in USPTO patent # 11,189,875, the individual battery modules each weigh within the allowable limit to permit recycling at the end of their life, which can be conveniently done at many home improvement stores. Should the operator of the mobile workstation need to replace one or more battery modules, those individual battery modules can be easily replaced within the base of the workstation, and the expired battery module can be readily recycled. Battery modules within the workstation base can be connected together, so the power provided by the battery modules can be effectively combined and used to power the workstation for longer run times.

“We have utilized this patent to design integrated Lithium-ion power systems for some of the leading medical and industrial mobile workstation manufacturers,” said Jeffrey VanZwol, Chief Marketing Officer of Green Cubes. “Green Cubes pioneered the migration from Lead Acid to Lithium-ion power for the mobile workstation market, and effectively eliminated Lead for the material footprint of the modern mobile workstation. This patent enables our Lithium-ion power systems to provide even higher levels of convenience through the entire life cycle of our products. As a leader in rechargeable power solutions, this patent demonstrates that Green Cubes is committed to minimal ecological impact by enabling its customers to easily recycle Lithium-ion batteries.”

About Green Cubes Technology
Green Cubes Technology develops and manufactures a complete portfolio of lithium power systems that enable its OEM and enterprise customers to transition from Lead Acid and Internal Combustion Engine (ICE) power to Lithium-ion battery power.  Green Cubes utilizes proven hardware and software platforms to build the most reliable lithium battery systems in its industries.  With over 300 employees across six countries, Green Cubes has been producing innovative, high-performance and high-quality products since 1986.

What Does the Future Hold for Your Rube Goldberg Battery Power System?

Rube Goldberg  adjective

accomplishing by complex means what seemingly could be done simply
a kind of Rube Goldberg contraption … with five hundred moving parts
— L. T. Grant
Source: Miriam Webster Dictionary

Did you know that Rube Goldberg is the only person to be listed as an adjective in the Miriam Webster Dictionary? The most celebrated cartoonist of his day, Mr. Goldberg often drew overly complicated machines used to achieve simple tasks to satirize industrialization and the self-destructive embrace of “progress.”

Comics such as “The Self Opening Umbrella” (shown above) show how a gentleman may rid himself of the inconvenience of opening an umbrella through the use of technology. Goldberg, who drew more than 50,000 comics in his lifetime and won a Pulitzer Prize for his work, often used these machines as a way to show how the “cure” of industrialization was much worse than the “disease” it aims to remedy.

If Mr. Goldberg were alive today, I wonder what he might make of the lead-acid battery (LAB) industry in general, and Exide Technologies in particular. If ever there was a Rube Goldberg Machine that required so much input for such little return, it would certainly be the LAB industry. The overly-complicated and destructive way they go about providing stored power would be comical if it weren’t so tragic. 

Take, for instance, Exide Technologies. One of the largest manufactures and recyclers of LAB in the world, Exide would have you believe that their Total Battery Management — which they claim recovers 99% of lead — is a safe and sustainable form of energy. And if you look at the industrial battery market today, where LAB has a dominant 96% share, you’d think they still had a lot of people convinced.

But look a little closer and you’ll see that Exide’s contraption is just as ridiculous as the self-opening umbrella. In 2013, Exide was forced to close a LAB recycling facility in Vernon, CA after admitting to illegally storing, disposing, and transporting hazardous waste for more than two decades. Exide originally agreed to pay $50M to clean up the site, but it soon became evident that was not nearly enough. Cleanup estimates for that site alone were ballooning into the hundreds of millions of dollars — and that didn’t include medical costs for the tens of thousands of people potentially affected. There were also other sites in Florida, Georgia, Illinois, Indiana, Louisiana, Mississippi, South Carolina, Tennessee, Pennsylvania and Texas that had to be shut down because of environmental, leaving more than 50 derelict sites around the country.

Exide, by necessity, had to spend more and more of its resources fighting lawsuits and paying damages instead of operating their business and doing the necessary R&D work to drive innovation. And with no way to push those additional costs to consumers or partners, they were forced into bankruptcy in 2020. Now, everyone who has been negatively impacted by LAB over the last 150 years will want their day in court. And whether it be Exide Technologies or another LAB manufacturer, whether they are currently operating, or their derelict sites have been shuttered for years, the damage caused by lead pollution never goes away and a day of reckoning is coming.    

The “Self Opening Umbrella” begins its chain-reaction series of events when:

Raindrops (A) fall on dried prune (B) causing it to swell and push against stick (C) which forces iron hand (D) to rub wheel against flint (E) in empty cigar lighter.

As a postscript, Mr. Goldberg adds “If you are hard up and can’t afford a new prune for each successive rainstorm, stay in the house and wait for the original prune to get old and wrinkled again.” With LAB manufacturers and recyclers faced with existential environmental and safety threats, maybe it’s time to ask how many prunes they have in reserve. 

The moral of the story is this: now there is a way to punish for the past damages LAB manufacturers have caused. Anyone in the lead acid business will be increasingly hampered by these pressures until LAB is either outlawed or becomes financially untenable. Moreover, it is not only the lead acid manufacturers and recyclers at risk. Any company that uses LAB as part of their business — to power their forklifts or 5G networks — will become increasingly susceptible to disruption because of these factors. In other words – LAB’s Rube Goldberg Machine could soon become your problem. And that was Mr. Goldberg’s warning all along.

Keith Washington – CEO

Ramp Equipment News: Lead-Acid vs Lithium-ion Batteries

Jerry Crump, Director of Business Development, GSE for Green Cubes, compares the merits of using Lithium-ion batteries to Lead-Acid batteries in electric GSE.

With the emergence of more and more electric Ground Support Equipment (eGSE), there is potential for great savings in Total Cost of Ownership (TCO) versus Internal Combustion engines (ICE) and Lithium-ion (Li-ion) batteries are rapidly replacing Flooded Lead Acid (FLA) as the preferred technology for similar reasons. In comparing Lead-Acid batteries versus Li-ion it is important to understand the hidden infrastructure costs for Lead.

For FLA, maintenance costs need to be accounted for along with battery watering and equalisation cycles that need to be tracked in order to ensure that warranties were complied with. FLA can also emit hydrogen when charging due to heating, so it needs to be charged in a properly ventilated space for safety. On the ramp, this is not usually an issue because there is typically enough air flow to allow for any off-gassing to dissipate; however, this can be an issue in
enclosed spaces, such as baggage rooms or battery rooms for equipment charging. In these areas, costly ventilation systems need to be utilised to ensure that the off-gassing during charging does not cause hydrogen buildups.

Read the complete article in Ramp Equipment News

Blog Post: Exide Lead Acid Batteries – Making Rube Goldberg Proud

On December 16, 1894, W.W. Gibbs, President of the Electric Storage Battery Company (ESBC) made a stunning announcement. Gibbs, who founded ESBC in 1888, asserted that he had just purchased all the patents and rights necessary to make ESBC the sole supplier of electric storage batteries in the United States. These patents were purchased from the General Electric Company, the Edison company, the Thomson-Houston, the Brush, the Accumulator company, the Consolidated Electric Storage Company and the General Electric Launch Company. Whether or not he actually had a monopoly is beside the point. Over the next hundred years, ESBC continued a relentless series of mergers and acquisitions to remain one of the largest manufacturers and recyclers of lead acid batteries in the world. Known today as Exide Technologies, the company would have you believe that their “closed loop recycling process” (cleverly dubbed Total Battery Management by their marketing department) recovers 99% of lead and is a safe and sustainable form of energy storage and motive power.

If he were alive today, I imagine Rube Goldberg would find Exide ripe for satire. Goldberg, who was five years old when W.W. Gibbs started ESBC, was an American cartoonist best known for depicting gadgets that performed simple tasks in overly complicated ways. For instance, in his classic 1931 comic entitled Professor Butts and the Self-Operating Napkin, Goldberg shows a gentleman eating soup with an outlandish contraption strapped to his head and arms. When he lifts the spoon to his mouth, a string tied to his elbow jerks a ladle which flings a cracker past a toucan perched above the professor’s head. When the toucan jumps for the cracker, seeds are dumped into a pail, pulling a cord which ignites a lighter, setting off a rocket attached to a sickle, which cuts a string allowing a pendulum to swing back and forth thus wiping the professor’s chin. Rube Goldberg’s machines skewered our proclivity for the blind use of technology. Why do we expend such vast resources and cause such great damage in exchange for such paltry returns? 

Why indeed?

Lead is a heavy metal, and exposure to even small amounts of it poses significant health risks. Lead poisoning is irreversible and there is no cure. Children are most susceptible, and even low levels of exposure can cause reduced IQs, learning disabilities and developmental problems. High levels of exposure can cause mental retardation, comas, convulsions, and death. Once we became aware of the real and serious hazards of lead, we took concrete steps to remove it from our surroundings. Since 1977, lead has been banned in paint used in all residential and public properties. We’ve also reduced or removed lead from gasoline, electronics, and construction materials. But one very significant source of lead remains: lead acid batteries. According to the World Health Organization (WHO), today around 85% of the world’s lead consumption is for the production of lead acid batteries. 

The fact is, lead acid battery power is neither safe nor sustainable, and when you begin to look at how complicated and dangerous the Total Battery Management system really is, the Rube Goldberg Machine begins to build itself. Even taken at face value – that 99% of lead is recovered in the recycling process – you’re still left with 1%. And after all, how bad could 1% really be? Just ask the residents of Vernon California.

A suburb of Los Angeles, Vernon was home to one of Exide’s lead acid battery recycling centers. Built in 1922, Exide took over operations in 2000. When it was operating, the lead acid smelter at the facility processed an average of 120,000 tons of lead – or approximately 11 million batteries – each year. Residents around the facility complained about the industrial pollution and the negative health impacts it had on the community. Over its last two decades of operation, regulators issued nearly 90 hazardous waste violations and sought to close the facility down, but Exide prevailed in the courts and continued to operate. 

In 2013, Exide was forced to close the facility after admitting to illegally storing, disposing, and transporting hazardous waste for more than two decades. The California standard for lead in residential soil is 80 parts per million. Soil with lead above 1000 parts per million is considered hazardous waste. In 2008 lead levels in the soil around Exide were found to be 50 times the hazardous waste limit. In 2015, California’s Department of Toxic Substance Control announced that as many as 10,000 residential properties and as many as 100,000 residents may be have been affected. Now in the midst of the largest cleanup of its kind in California history, officials estimate costs could be in the hundreds of millions of dollars.

In 2020, Exide and four of its subsidiaries filed for Chapter 11 bankruptcy protection and sold substantially all its operating assets. Later that same year, a federal bankruptcy court allowed Exide to divest itself of responsibilities for multiple waste sites including Exide’s battery recycling plant in Vernon, CA. So far, Exide has avoided paying for any of the healthcare costs associated with their activities, and as long as they comply with the Federal agreement, they avoid criminal charges. But the residents of Vernon, as well as their lawyers, have not given up the fight to recover the damages Exide has caused to them, and their children, and their children’s children.

I imagine Mr. Goldberg would find great irony in a “Total Battery Management” system that was so outlandishly complicated and dangerous and provided such little value. Instead of toucans and rockets, he might depict battery change rooms and watering stations. Leaking acid might eat through strings and toxic fumes might turn large fans. Spent batteries might be flung into a smelter and “recycled” in order to perpetuate the machine, but the air, water, and soil would be damaged beyond repair. Maybe he could find humor in this “closed loop recycling system” whose very existence is predicated not on providing stored energy but rather in maintaining the status quo of a would-be monopoly hanging on to an outdated technology. And then perhaps Mr. Goldberg would be able to do what so many scientific studies, white papers, and peer-reviewed journals have failed to do: convince society that the time for lead acid batteries has passed. After all, how long will we continue to eat soup with toucans strapped to our heads before we realize there’s an easier way to wipe our chins?

Battcon ’21 Attendees Impressed with Green Cube’s (formerly branded as UNIPOWER) Guardian and Aspiro DC Power Systems

battcon 2021

At this year’s Battcon conference, we were pleased to present our highly trusted and reliable Guardian and Aspiro DC power families. Conversations were a plenty about the reliability and technology of power systems and how lithium-ion batteries are becoming favored for utility and telecom applications compared to lead-acid batteries. Lithium-ion chemistry has a distinct advantage over lead-acid as it offers batteries with higher energy densities and longer lifetimes that are smaller and significantly lighter in weight.

Our Guardian and Aspiro product lines can operate with a variety of battery chemistries — including lithium-ion, like the new Guardian Lithium batteries from Green Cubes — to provide clean, reliable, safe DC power when AC grid power is lost. Each Guardian battery contains an integrated Battery Management System (BMS), charging electronics, and proprietary Energy Balancing Technology (EBT) that enables active current control, load sharing and State of Charge balancing across connected units. This is a significant advantage for users as lead-acid battery monitoring systems typically must be purchased from a third party and integrated into their battery installation.

All Guardian batteries have active thermal management and feature Lithium Nickel Manganese Cobalt (NMC) or Lithium Iron Phosphate (LFP) chemistries to accommodate multiple utility and telecom applications. Having the BMS built into the batteries allows considerable cost saving for operators. Also, with increasingly strict requirements from the North American Electric Reliability Corporation (NERC), the integrated battery monitoring system can reduce battery maintenance and testing that technicians have to perform, lowering labor and maintenance costs. In addition, Green Cube’s GCC controller with PowCom™ software provides immediate access to performance and alarm information. This provides the operator with a single point where they can access and control their DC power plant remotely from anywhere and monitor the rectification and energy storage performance.

Battcon was a great validation of our high-efficiency DC power systems with lithium batteries that provide the highest efficiency level with a wide operating temperature and input voltage range for mission-critical applications.