Unlike most other batteries, the Deka® UltraBattery® offers true multipurpose capabilities. While running 24/7 in a power application it can simultaneously provide energy or standby capabilities.


The Deka UltraBattery can do it all, simultaneously in one application. UPS plus variability management? No problem. It’s the true multipurpose battery.

Three types of application

  • Power applications provide fast transfers of energy (e.g. to smooth a noisy signal), such as in PV or wind turbine outputs.
  • Energy applications provide sustained release of stored energy. The perfect example is maximum self-consumption of domestic PV. All day you want to store up the sun’s energy; at night you want to release it at a fairly constant rate.
  • Standby applications provide backup power to give critical machinery time to shut down safely or ride through a grid outage.

Deka UltraBattery sees only one application

The Deka UltraBattery is unique as a lead-acid platform that excels at all these applications, combining them into a single multipurpose application.

Multipurpose applications are desirable because multiple saving and revenue streams can be applied to the one installation. Traditionally, lead-acid batteries have ruled the standby power market, lead-acid and various other chemistries have performed best in energy applications, and cycling batteries have performed best in power applications.

The Deka UltraBattery, as a single product, can do everything standard lead-acid batteries can do as well as everything cycling batteries (including lithium-based chemistries) can do.

Doing it all

The Deka UltraBattery offers the same trusted, safe and sustainable lead-acid backup that is built into virtually every data center, substation, hospital and other large building in the world.

It also cycles like nothing else, outperforming most cycling-based batteries including those based on lithium.

One technology brings multipurpose applications together

Power applications

We’ve applied our experience in delivering MW-scale frequency regulation and renewable smoothing to develop Deka UltraBattery products for kW-scale users. At this scale, a load partially powered by PV panels or diesel generation can be greatly assisted by rapid movements of power in and out of batteries.

Energy applications

Energy applications are those that require a sustained release of energy over a long period. For this purpose, the Deka UltraBattery has all the benefits of traditional lead-acid batteries, the current go-to technology for energy applications such as domestic off-grid.

Traditional lead-acid batteries do well when the application is well defined and when it is possible to determine in advance the likely periods of charge and discharge. Generally, different types of lead-acid batteries are used depending on whether the energy is needed infrequently, such as in data-center and critical-load standby, or daily, such as in maximum self-consumption of PV.

Covering all applications

The Deka UltraBattery opens the floodgates for lead-acid chemistry to excel in power applications, while retaining its traditional prowess in energy applications.

This means that, unlike almost any other chemistry, the Deka UltraBattery is both a power battery and an energy battery. It’s also a fast-release or slow-release energy battery.

It does all these jobs effortlessly and, moreover, simultaneously.

Multiple applications in one installation

Because the Deka UltraBattery technology operates over a wide range of charge and provides high-power charge and discharge, this two-in-one dual purposing may be supported by an Deka UltraBattery installation that is similarly sized to a traditional lead-acid stand-by battery bank.