About VoltCalcs

Who I am

I'm Dan Dadovic. I work as Commercial Director at Ezoic Inc., leading revenue strategy across digital publishing. I'm also a PhD candidate (in progress) in Information Sciences at the Faculty of Organization and Informatics (FOI), University of Zagreb. I hold a Master's in Informatics and a Master's in Economics from FOI, and a Bachelor's in Informatics.

Besides VoltCalcs, I build and maintain other web tools, including PrinterTools for printer diagnostics and CalculatorCorp for general-purpose calculators.

On the energy side, my hands-on experience comes from building, maintaining and operating my own systems: residential solar panel installation, DIY battery bank construction, off-grid power systems, wind power, and EV ownership and driving.

I am not a licensed electrician or certified solar installer. The content here reflects practical experience and research, not professional engineering credentials. For permitted or critical electrical work, always consult a licensed professional. Read the full disclaimer.

Where the formulas come from

Calculator formulas are based on standard electrical and energy engineering equations. Electrical calculations reference the National Electrical Code (NEC) and IEC standards. Battery data draws on Battery University and manufacturer datasheets. Solar calculations use PVWatts data from the National Laboratory of the Rockies (formerly NREL). The educational content also leans on my hands-on experience.

Every result is a theoretical estimate. Real performance depends on things no calculator fully models: temperature, battery age, component quality and installation conditions.

Who reviews the pages

Each calculator and guide is reviewed by an assistant professor at FERIT Osijek, the Faculty of Electrical Engineering, Computer Science and Information Technology at Josip Juraj Strossmayer University of Osijek. The review covers each page's methodology and educational accuracy, not the code or the editorial decisions.

Damir Topić's teaching and research focus on photovoltaic systems, solar power engineering and battery storage for off-grid and hybrid installations. He reviews pages on battery runtime and capacity, lithium and lead-acid chemistry behavior, solar panel output, panel and battery-bank sizing, and off-grid load planning.

Pages on inverter sizing, motor full-load amperage, wire and cable sizing, voltage drop, and grid-side billing math are reviewed by Danijel Jerković-Štil. His teaching and research focus on power electronics, including inverter design, battery management systems, motor control and grid-tied power conversion.

Every calculator and guide shows its reviewer's name in a byline. I maintain the site; each reviewer checks the pages in their area. Their profiles are on the reviewers page, and the editorial policy covers sourcing and corrections.

How I use AI

AI tools help me draft and research. I review, edit and verify every page before it goes up.

Independence

VoltCalcs is independently owned. No manufacturer, retailer or brand has editorial influence over the calculators or the content. Where a product is named, it is there for practical context, not paid promotion.

Corrections and contact

If you find an error or something out of date, report it through the contact form and I will correct it. I review and update the pages regularly, and every calculator page and guide shows a "Last updated" date, so you can see when it last changed.