US Battery Evaluates Expanding Market Reach Based on Gridtential Energy Silicon Joule™ Technology

US Battery Evaluates Expanding Market Reach Based on Gridtential Energy Silicon Joule™ Technology

SANTA CLARA and CORONA, Calif., July 28, 2020 /PRNewswire/ — Gridtential Energy, the inventor of Silicon Joule™ bipolar battery technology and US Battery, a global leader of FLA (flooded lead acid) deep cycle batteries, announce that they have entered into a formal agreement to collaborate on Silicon Joule™ bipolar battery technology.

Under the terms of the agreement, US Battery and Gridtential Energy will industrialize bipolar plate pasting and curing processes. Additionally, Silicon Joule™ bipolar AGM (absorptive glass mat) batteries will be assembled and tested, using US Battery active material to drive further improvements in cycle life, energy density, battery efficiency, charging rates, and manufacturability. As US Battery achieves new performance milestones, the company will be well-positioned to manufacture and distribute industry-leading bipolar AGM products to the market.

Silicon Joule™ bipolar technology enables an innovative class of advanced lead batteries with silicon at its core. It is a design-driven, low-cost, high-performance, patented energy storage solution that provides improved power density, cycle life, dynamic charge acceptance and wider temperature range, with up to 40% lower weight, while retaining full lead-battery recyclability. This is all accomplished while leveraging existing technologies from mature industry supply chains – allowing rapid scaling through existing lead-battery infrastructure.

US Battery provides FLA and AGM deep cycle batteries for golf cars, NEV (neighborhood EV) & LSEV (low-speed EV), industrial electric vehicles, as well as renewable energy & energy storage battery markets. US Battery products provide premium deep cycle battery life with the advantages of high initial capacity, fast cycle up to full rated capacity, high total energy throughput, ultimate charger compatibility, and high charge efficiency to meet new regulatory requirements at low cost per watt-hour.

Terry Agrelius, CEO of US Battery commented, “US Battery hopes to combine the current advantages of premium deep cycle, lead-acid battery cycle life that provides low cost per watt-hour over the life of the battery with the advantages of high power density and increased cycle life offered by the Gridtential Energy Silicon Joule™ bipolar battery technology. This combination could provide the improvements necessary for US Battery to better compete with the advanced battery technologies currently on the market and proposed for future market development while maintaining the safety and recyclability of lead-based battery technologies.

John Barton, CEO, Gridtential Energy said, “US Battery is an ideal partner for Gridtential. Leapfrog product innovation often starts with fresh thinking on how to best utilize core company strengths to make a disruptive move. Gridtential offers a better way to build a battery with modern materials from the solar industry. The leadership at US Battery is taking a smart approach, leveraging Silicon Joule™ technology with their organizational expertise in electrochemistry and battery manufacturing to create a new class of high-performance products. Gridtential is proud to work with partners taking bold steps to accelerate advancements in the industry.”


About Gridtential Energy

Gridtential’s cutting-edge Silicon Joule™ battery architecture combines the traditional benefits of lead batteries – low cost, near 100% recyclability, and safety – with the performance and life cycle usually associated with lithium batteries. Industries from motive power to grid energy storage are searching for lower-cost, sustainable solutions to meet diverse energy needs.

Gridtential Energy provides Silicon Joule™ reference batteries, development kits, bipolar materials, and non-exclusive licenses, enabling manufacturing partners to easily adapt their factories to provide high performing, higher voltage 24V & 48V batteries to their customers for the hybrid-automotive, Low-Speed EV (LSEV), energy storage system (ESS) & Telecom back-up markets – all without giga-scale capital investments. To learn more visit:

battery pack capacity infograph

Battery Pack’s Size Impacts Capacity And Run-Time

Having to buy a new set of batteries for your golf car is not something people always look forward to. A 48-volt golf car can take anywhere from four or even eight batteries, depending on the compartment space and vehicle model. This can be a big investment, so if you could get away with only buying four 12v batteries, would that be better? It might seem so upfront, but depending on how often you use your golf car and the amount of runtime you expect, fewer batteries with the same voltage may not always be the best choice.

Depending on the make and model of your golf car, it may seem less expensive to buy four 12-volt batteries connected in series to power a 48-volt system. Choosing higher voltage deep-cycle batteries, however,  often means sacrificing amp-hour capacity. Under constant use, a four-battery pack will have a shorter life cycle than a pack producing the same 48-volts but made up of more batteries. The reason is that the larger battery pack provides a substantial increase in amp-hour capacity, leading to more runtime and cycle life than a smaller battery pack.

More batteries connected in series can produce the same amount of voltage, but because there are more batteries to share the load, it lowers the discharge rate per battery. The driving range is also extended because more batteries increase the overall capacity. Think of it like adding a larger fuel tank to your car. With a larger battery bank, you can drive your golf car farther between charges. If you keep your depth of discharge (DOD) on the battery pack less than 50 percent, it will ultimately add to making the pack last much longer than a pack with fewer batteries.

For example, on a 48-volt golf car, you can typically get a longer driving range and increased battery life with six 8V batteries, and even more capacity with eight 6V batteries. There are still other variables to consider, as there are various 6V and 8V batteries with different amp-hour ratings, but when you replace the batteries with the same amp-hour rating required by the golf car manufacturer and provide proper maintenance procedures, the battery bank with more batteries will last longer. Additional information on explaining the effects of wiring batteries in series and parallel can be found here: