EnerSys Brand Guidelines: The Reading Battery Group Built From Yuasa’s Americas Business

A battery group formed in Reading in late 2000.

EnerSys is an industrial battery maker headquartered in Reading, Pennsylvania. The company says its present form dates from late 2000, when it acquired the reserve-power and motive-power battery businesses of Japan’s Yuasa Corporation in North and South America. English Wikipedia gives its founding year as 1999, and German Wikipedia files it among companies founded in 2000. EnerSys also says that it and its predecessor companies have made industrial batteries for more than a hundred years, a heritage it traces through the businesses it has bought rather than through one founding workshop.

Growth came largely by acquisition. The company says that in 2002 it bought the reserve and motive power business of the Energy Storage Group of Invensys plc, and in 2005 the motive power battery business of the Italian maker FIAMM; English Wikipedia adds that the Hawker Group merged with EnerSys in 2002. Wikipedia then lists a long run of smaller purchases: ABSL Power Solutions in the United Kingdom, Ergon Batteries in Greece and GAIA Akkumulatorenwerke in Germany in 2011; Energy Leader Batteries in India in 2012; Purcell Systems, a Washington State maker of equipment enclosures and battery cabinets, in 2013; UTS Holdings of Malaysia in 2014; ICS Industries of Australia in 2015; and ENSER, a Tampa maker of thermal batteries for defence electronics, in 2016.

The move into power equipment came on 10 December 2018, when EnerSys completed its purchase of the Alpha Technologies group. English Wikipedia says the deal turned EnerSys into an integrated provider of DC power and energy storage for broadband, telecom and energy storage customers. EnerSys trades on the New York Stock Exchange under the symbol ENS, and Wikipedia records that it joined the S&P MidCap 400 index in 2016.

Motive power and reserve power.

EnerSys sorts much of its range into two families. Motive power batteries run electric forklift trucks and other commercial and industrial electric vehicles; reserve power batteries stand ready in telecom networks, utilities, uninterruptible power supplies and other systems that need stored energy on call. English Wikipedia names reserve brands including PowerSafe, DataSafe, Genesis and CYCLON, and motive brands including Hawker, NexSys and IRONCLAD. Alongside the batteries the company sells chargers, DC power equipment, battery accessories and outdoor enclosures for telecom, cable, utility and transport customers, as well as government and defence buyers. The battery menu on its website also carries older names such as Oerlikon and GAZ next to the newer lines.

Its website organises the business by where the products end up: communications networks, logistics and warehousing, transportation, data centres, industrial power and utilities, and aerospace and defence among them. Under aerospace and defence it lists submarines and underwater vehicles, military aircraft, military vehicles and space. In September 2026 the company said that its ABSL lithium-ion space batteries form part of the power system of NASA’s Nancy Grace Roman Space Telescope, through a collaboration with the European Space Agency.

Recent launches put lithium alongside lead. In June 2026 EnerSys introduced DataSafe Noir, a lithium system for data-centre power, and in July 2026 a new generation of NexSys iON lithium-ion batteries for heavy-duty forklift work. The same month it said it was refining plans, with support from the US Department of Energy, for a lithium cell manufacturing facility focused on defence. Those are the company’s own announcements, as listed on its news page, and the details of each sit on its investor site.

How industrial battery makers present themselves.

Industrial batteries are rarely seen by the people who depend on them. They sit under the seat of a forklift truck, in a locked room behind a telephone exchange or in the cabinets that keep a data centre running when the mains fail, so the makers in this guide have to show their products in places most readers will never visit.

Their pictures tend to come from a small set of scenes. There are rows of cells on a factory floor, forklift batteries packed into steel trays, standby racks lined up in data centres and telecom rooms, and cutaway diagrams that open a cell to show its plates, separators and chemistry. Newer lithium makers add architects’ renderings of large cell factories, and the oldest firms reach back to photographs of early lead and nickel works and to the railway, telephone and submarine customers they first supplied.

The trade is also a story of ownership. Many of these names have passed through electrical groups, private equity funds, stock markets and energy companies, and several survive mainly as brands inside larger groups. Regulators have looked at the trade too: in 2017 Germany’s competition authority fined two makers of industrial batteries over a shared lead surcharge, and a French heritage inventory has recorded one maker’s Bordeaux factory buildings as industrial architecture.

This guide sets out what can be checked about each brand — who founded it, who owns it, where it says its batteries are made and which product names it uses — and marks clearly what rests only on the company’s own word. The colours and typefaces shown are our own interpretation, not official brand assets.

Many product names under one corporate mark.

The group’s German business has also been before a regulator. On 27 June 2017 Germany’s competition authority, the Bundeskartellamt, announced fines on two industrial battery makers, Hawker GmbH of Hagen and Hoppecke Batterien of Brilon, for agreeing between them to apply a “lead surcharge” as a price component of lead batteries. The authority said the case began with a sector-wide dawn raid in April 2014 after a leniency application by Exide Technologies, which was not fined, and that the two companies settled. It also found that from 11 September 2012 to 18 March 2014 Exide, Hawker and Hoppecke had agreed to pass on higher lead and lead-alloy costs in the German sale of motive power batteries, such as those used in forklift trucks. German Wikipedia places Hawker in the EnerSys group, and says production at the Hawker works in Hagen ended on 30 June 2021, with about 180 staff staying on in sales, administration, customer service and a small assembly area.

The group keeps adding businesses. On 27 October 2026 EnerSys announced that it was to acquire Ultralife, in a release it headlined as expanding its battery technologies and accelerating its growth in the defence market; earlier, in May 2026, it announced a realignment of its business segments. Its website still gives acquired names such as Alpha, Odyssey Battery and Purcell Systems their own background pages, and keeps a regional headquarters for Europe, the Middle East and Africa in Zug, Switzerland.

For a design guide, EnerSys shows how a company assembled from acquisitions can carry a long list of product names under one corporate mark. Compare VARTA, the German battery name, and East Penn, another Pennsylvania battery maker. For this guide we use a deep green, copper and a lead grey with a sans, an unofficial interpretation; no product or logo is reproduced.

Keep EnerSys’s identity on hand — save it to a board in the Made Good inspiration library.