Head to head · updated 5 September 2026

Rainman Portable 12VDC 34L vs LEDI Scout SW20

Scout SW20 costs 1.3× less energy per litre (10.0 against 12.7 Wh/L). Portable 12VDC 34L makes 1.6× the water per hour (31.5 against 20 L/hr).

One side of this comparison rests on a reported figure. LEDI Scout SW20 is published by the manufacturer and corroborated across independent lookups, but we have not yet read the figures page-in-hand the way we have for the rest of the table. The comparison is shown because it is still the best available, not because it is settled. The manufacturer states a draw of 180–220 W; the midpoint is used, matching how we treat published output ranges. How we source figures.

SpecPortable 12VDC 34LScout SW20
BrandRainmanLEDI
Output26–37 L/hr20 L/hr
Power draw400 W200 W
Energy per litre12.7 Wh/L10.0 Wh/L
Run time for 100 L3.2 h5.0 h
Energy for 100 L1,270 Wh1,000 Wh
Power source12V DC12V DC
ConfigurationPortablePortable
Membranes1 × 40in1 × 2521
Indicative price$4,898on request
Efficiency rank23 of 3017 of 30

Highlighted cells mark the better figure on that row alone. Lower is better for energy, run time and price; higher is better for output.

Buy the Portable 12VDC 34L if…

You want tanks full in the shortest possible run, or you have a genset that is going to run anyway.

Get a quote on the Portable 12VDC 34L

Buy the Scout SW20 if…

Your boat runs on solar and every watt-hour is spoken for, because this is the cheaper litre to make.

Get a quote on the Scout SW20

Common questions

Which is more efficient, the Portable 12VDC 34L or the Scout SW20?
The Scout SW20, at 10.0 watt-hours per litre against 12.7. Over 100 litres a day that is a difference of about 270 Wh.
Which makes more water, the Portable 12VDC 34L or the Scout SW20?
The Portable 12VDC 34L, at 31.5 L/hr against 20. That is 1.6 times the output per hour running.
Which is cheaper?
We do not have indicative pricing for both of these. Ask a stockist for a landed AUD quote on each.
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