Match the unit to your outage risk

Sizing the DELTA Pro Ultra starts with a simple math problem: list the appliances you refuse to lose, add their running watts, then multiply by the hours you expect to be off-grid. The 7,200W continuous (12,000W surge) AC output covers fridges, well pumps, and routers with headroom to spare.

For a true 24-hour outage, the 6kWh base, expandable to 90kWh matters more than peak watts. Pair the DPU with a solar panel or an extra battery and you turn a one-night scramble into a multi-day comfort zone.

Budget tiers that make sense

The DELTA Pro Ultra sits in that rare sweet spot: serious capacity without serious complexity. 6kWh base, expandable to 90kWh and 7,200W continuous (12,000W surge) cover the loads most households actually lose sleep over.

Whether you are prepping for storms, building an off-grid corner, or just want a quiet safety net, the DPU delivers 4,000+ cycles to 80% of dependable runtime and a 0% to 100% in about 1.3 hours from wall that respects your time.

Solar and expansion planning

The DELTA Pro Ultra is built to drink sunlight. With up to 5,600W solar input, you can chain panels on the roof, in the yard, or folded beside a tent and watch the DPU refill while the grid stays down.

Self-consumption is the quiet win: run your home on stored solar by day, top up from panels, and lean on the battery at night. The 6kWh base, expandable to 90kWh gives you the buffer to skip peak utility rates.

Dealer support matters more than spec

Backup power is only as good as the day you need it, and the DELTA Pro Ultra is built for that day — not the showroom. 6kWh base, expandable to 90kWh and 7,200W continuous (12,000W surge) translate directly into “the fridge stayed cold” and “the Wi-Fi never blinked.”

The DPU earns its place by being boring in the best way: it sits, it charges, it delivers. No drama, no maintenance theater, just power when the grid forgets its job.

Frequently Asked Questions

How long does the DELTA Pro Ultra last on a full charge?
Runtime depends on load, but with 6kWh base, expandable to 90kWh and 4,000+ cycles to 80%, most households get a full night of essentials (fridge, Wi-Fi, lights, phone charging) from a single charge, and far more when paired with solar.

Can I recharge the DPU with solar?
Yes. The unit accepts up to 5,600W solar input, so you can chain panels and keep it topped up during extended outages or off-grid trips.

Is the DELTA Pro Ultra safe to keep indoors?
It uses stable LiFePO4 chemistry and runs silent with no fumes, so it is safe inside a garage, utility room, or RV — unlike a gas generator, which must stay outdoors.

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