Portable power stations have become the default mobile-electricity solution for camping, caravanning, off-grid living, and home backup in Australia. They've also become a confusing category, with seven serious brands, four common cell chemistries, and prices that range from $200 to $5,000.
This guide cuts through that. By the end you'll know what size you need, what specs actually matter, and which trade-offs you can ignore.
Every other decision flows from this one. Be honest about the actual appliances and the actual duration. Wishful thinking sells you a unit that's too big and burns $500 you didn't need to spend.
Four typical buyer profiles:
Capacity is measured in watt-hours. One watt-hour will run a one-watt load for one hour. So a 1,000Wh power station will run a 100W appliance for 10 hours (in theory; real-world efficiency drops it to about 8.5 hours).
The simple way to size yourself: write down everything you want to power, the watts it draws, and how many hours per day you'll use it. Sum the result, multiply by 1.2 for inverter losses, multiply by the number of days you need to go between recharges.
Worked example: 60W fridge running 30% of the time + 10W of LED lights for 4 hours + 5W of phone charging for 2 hours = (60×0.3×24) + (10×4) + (5×2) = 432+40+10 = 482Wh per day. Add 20% = 580Wh per day. For a 3-day trip, you want 1,740Wh — a Roam 1800 plus solar, or a Base 2400.
Three options in 2026: NCM (legacy), LFP (modern standard), LMFP (newest). Skip NCM. Both LFP and LMFP are safe, but LMFP packs more capacity per kilogram. See our detailed breakdown: LFP vs LMFP vs NCM.
If you're running anything with a heating element (kettle, induction cooktop, hairdryer), you need at least 1,500W of AC output. If it's just laptops and lights, 300W is fine.
Also check: pure sine wave, not modified sine wave. Modified-sine output can damage sensitive electronics (medical devices, some chargers, audio gear). Every Voltsen unit is pure sine wave.
If you plan to go off-grid for more than a couple of days, the solar input rating is more important than the capacity. A 350W MPPT input can recharge a 1,000Wh power station in 4 hours of clear sun. A 100W input takes 14 hours — you'll never catch up.
Don't oversize the panel beyond the unit's max input — the excess wattage is wasted.
How fast does it recharge from a wall socket? "1-hour" charging is now standard on premium units (Roam 1800, Base 2400). Slower units (500W AC input) take 3-4 hours. Matters more than you'd think — at a caravan park you want to top up quick during happy hour.
This is where the imported brands fall over. EcoFlow, Jackery, BLUETTI and Anker all advertise 5-year warranties, but a warranty claim means shipping the unit back to a depot in Asia or the US. That's weeks, often months, and you cover the international freight.
Voltsen's 3-year warranty is handled in Oakleigh VIC. You ship the unit on a pre-paid label, we repair or replace, you have it back inside 7-10 days.
We've done the side-by-side: see our competitor comparison. The short version: spec-for-spec Voltsen is 15-25% cheaper than EcoFlow / Jackery / BLUETTI / Anker, with local warranty and same chemistry.
| What you're doing | Capacity | AC output | Recommended SKU |
|---|---|---|---|
| Pocket charging | 200-300Wh | 250-300W | Spark 270 or Roam 300 |
| Camping weekend | 400-700Wh | 500-700W | Roam 700 |
| Caravan touring | 900-1,000Wh | 1,200-2,000W | Roam 1800 |
| Home blackouts | 1,500-2,500Wh | 2,000-2,400W | Base 2400 |
| Off-grid living | 4,000Wh+ | 2,400W+ | Base 2400 + B2000 |
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