About This DC Power Supply Resource

This site is a buyer-focused resource for engineers specifying bidirectional, regenerative and programmable DC power supplies. We translate application requirements, EV, solar, energy storage and beyond, into clear spec guidance, and connect you with the manufacturer when you're ready to quote.

What this resource is for

Choosing high-power DC test equipment is rarely a one-click purchase. The right supply depends on your voltage class, power band, whether you need to sink as well as source, and which standards your results must satisfy. This site exists to make those decisions easier with application-specific buyer's guides, comparison tables and plain-English spec advice, no marketing fog.

We focus on the questions buyers actually ask: which supply do I need for EV pack cycling, for MPPT inverter testing, for BESS validation? Each guide ends with a clear path to a tailored quote.

Powered by Ultra Power Systems

The guidance here is built around the Ultra Power Systems N35500 platform, a bidirectional, regenerative, programmable DC power supply family designed for demanding test and simulation work. Key capabilities include:

Output from 0–2250 V, up to 42 kW in 3U, scalable to the megawatt range via master/master paralleling.
Up to 93% regenerative efficiency and 0.02% F.S. accuracy with ≤5 ms response.
CC/CV/CP/CR modes, plus battery emulation (NS81000) and PV/solar array simulation (NS91000, EN50530 and Sandia MPPT).
LAN, RS232, RS485 and CAN comms with SCPI, Modbus-RTU and CANopen.

Standards alignment spans CE, IEC 61010, EN50530, IEEE 1547 and ISO 17025.

Applications we cover

The platform, and this resource, serve EV and battery pack testing, cell cycling, PV inverter test, fuel cell, energy storage (ESS/PCS/BESS), UPS, motor drive, EV charger and BOBC, and aerospace and ATE programs. If your application cycles, simulates or stress-tests power, there's likely a fit.

Each guide on this site is written to answer a single buying question, which voltage class, how much power, whether you need bidirectional flow, and which standards your results must satisfy, so you can move from requirement to specification without wading through a full datasheet. Where an application benefits from a simulation option, such as battery emulation for charger testing or PV array simulation for inverter MPPT work, we flag it so it lands in your quote the first time.

Ready to talk specifics? Request a quote or email Ultra Power Systems.

Frequently asked questions

Is this an independent guide or a manufacturer site?

It is a buyer's resource powered by manufacturer Ultra Power Systems. The guidance is application-focused and vendor-aligned: we explain how to spec a supply and point you to the Ultra Power Systems N35500 platform and quoting team when you're ready.

How do I get pricing?

Pricing is quote-based because high-power DC systems are configured to your voltage, power and channel needs. Use the request-a-quote link or email Ultra Power Systems with your requirements for a tailored figure.

Which applications does the equipment support?

EV and battery testing, cell cycling, PV inverter test, fuel cell, energy storage (ESS/PCS/BESS), UPS, motor drive, EV chargers and BOBC, and aerospace/ATE, all from the same N35500 platform.

Get a configured quote

Tell us your voltage, power, application and timeline and get a configured quote from Ultra Power Systems.

Get a Quote Contact the team