Sizing, runtime, chemistry, blackouts, solar, shipping and warranty — the questions Aussies actually ask, with answers that don't waste your time.
Match capacity (Wh) to the appliances you want to run and how long. A weekend camp running a 60W 12V fridge wants 400–700Wh. A laptop-and-phones road trip wants 200–400Wh. A whole-house blackout where you keep the fridge, modem and a few lights running for a day wants 1,500–2,500Wh.
The Voltsen range covers all four bands: Spark 270 (270Wh), Roam 300/700/1200 (236–945Wh), Camp 300 (296Wh), Base 2400 (2,048Wh).
A 12V camping fridge averages 30–60W when running, but cycles on and off, so real draw is around 15–25W. Divide your power station's Wh capacity by that number to get hours:
A 240V household fridge averages 100–150W, so a Base 2400 lasts 14–20 hours on one. Add a solar panel during the day and you extend these indefinitely.
Yes. CPAP machines need pure sine wave AC, which every Voltsen unit delivers. A typical CPAP draws 30–60W, so a Roam 300 will run one for 4–6 nights, a Roam 700 for 8–12 nights, a Roam 1800 for 14–22 nights. The heated humidifier roughly halves those numbers. Tell us your CPAP model in the contact form and we'll confirm exact hours.
LFP stands for Lithium Iron Phosphate — the safest, longest-lived lithium chemistry in mainstream use. LFP cells deliver 3,000–4,000 cycles before they degrade to 80% of original capacity (older NCM cells were 500–800), and they won't thermal-runaway under normal abuse. LMFP is a newer variant that adds manganese for higher energy density while retaining LFP's safety. Every Voltsen power station uses LFP or LMFP cells.
Yes. Unlike petrol generators, Voltsen units produce zero exhaust, zero CO, and run near-silent. They're safe for apartments, caravans, tents and offices. The LFP/LMFP chemistry is the safest commercially available.
The Spark 270 (270Wh / 72,000mAh) exceeds the 100Wh-per-cell IATA limit, so it can't be flown on commercial airlines (carry-on or checked). Smaller power banks under 100Wh per cell are normally permitted carry-on only — always check with your airline first. None of the larger Roam, Camp or Base units can be flown.
Pick the appliances you want to run, set hours per day, and we'll work out which Voltsen covers it.
MPPT (Maximum Power Point Tracking) is a charge controller inside the power station that constantly adjusts how it draws current from a solar panel to harvest the most usable power as light conditions change. Without MPPT you can lose 20–30% of available solar energy. Every Voltsen power station with a solar input includes MPPT — you don't need a separate controller.
Two rules:
Suggested pairings: Spark 270 ↔ Sun 100 · Roam 300/700 ↔ Sun 100 or 200 · Roam 1800 ↔ Sun 200 · Base 2400 ↔ Sun 200 (more units coming Q4 — Sun 400 in production run two).
Yes — particularly the Roam 1800 and Base 2400. Both have UPS-grade switchover (under 20ms), so sensitive appliances like fridges, modems, gas heater controllers and CPAP machines keep running when the grid drops. Base 2400's 2,048Wh will run a typical fridge plus modem and lights for 14–24 hours. Pair with a Sun 200 panel for indefinite-duration outage coverage.
Yes. The Base 2400 accepts B2000 expansion battery packs (2,016Wh each), letting you scale capacity to 4,064Wh with one pack or 6,080Wh with two. The expansion packs share the Base 2400's charging and inverter — they're pure capacity add-ons.
Spec-for-spec equivalent or better at 15–25% lower prices, with a real 3-year Australian warranty handled locally instead of overseas returns. See our full side-by-side comparison for SKU-by-SKU detail.
Every Voltsen power station and solar panel ships with a 3-year warranty covering manufacturing defects and battery degradation. Warranty units are repaired or replaced from our Australian warehouse — you don't ship anything overseas. Cells are warranted to retain at least 80% of rated capacity for the warranty duration.
Free standard shipping Australia-wide. Most orders ship same-day from our Oakleigh VIC warehouse and arrive within 2–5 business days to capital cities, 5–10 business days to regional and remote postcodes. Express upgrades at checkout.
Yes — Afterpay, Zip, Apple Pay, Google Pay, and all major credit cards via Stripe at checkout. Larger units like the Base 2400 are eligible for humm 6- and 12-month plans.
Inside warranty we replace or repair at no cost from our Australian warehouse. Outside warranty we offer paid out-of-warranty repairs — we stock replacement cells, inverters and chargers for every model. Cells in particular can usually be replaced for significantly less than buying a new unit.
Not from the current power station range — these are designed for AC and DC output to appliances, not the high cranking-amp pulse a jump starter needs. We're launching a dedicated Voltsen Rescue 3-in-1 unit (jump starter + air pump + power bank) — register on the contact page to be told first.
Real Australian humans answer the phone. Most enquiries get a reply the same business day.