MEGAWISE RZ 618-3
A small 110 V cool-and-heat unit for a tent or truck cab, sold by Amazon itself.
Amazon $522.89$522.89
The MEGAWISE RZ 618-3 is the better battery-powered portable air conditioner overall, rated 3.5 to 3.0. The MEGAWISE RZ 618-3 costs $87.54 less ($522.89 vs $610.43).
Prices were last checked November 9, 2026. Product prices and availability are accurate as of that date and are subject to change; the price and availability shown on Amazon or the retailer's site at the time of purchase apply. As an Amazon Associate we earn from qualifying purchases.
MEGAWISE RZ 711
A cooling-only 110 V tent unit sold by Amazon itself, for buyers who value an easy return.
Amazon $610.43$610.43
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every 110 V AC for power stations battery-powered portable air conditioner; a clear win is highlighted. How we rank explains each one.
| Factor weight | MEGAWISE RZ 618-3 | MEGAWISE RZ 711 |
|---|---|---|
| Overall rating | 3.5/5 | 3.0/5 |
| Value 30% | 63 $109.46 per 1,000 BTU ($522.89, 4,777 BTU) | 57 $119.27 per 1,000 BTU ($610.43, 5,118 BTU) |
| Efficiency 25% | 100 11.4 BTU per watt (420 W rated) | 50 rated cooling power not published (neutral score used) |
| Noise 15% | 50 noise rating not published (neutral score used) | 50 noise rating not published (neutral score used) |
| Weight 10% | 50 weight not published (neutral score used) | 50 weight not published (neutral score used) |
| Warranty 20% | 0 1-year warranty | 0 1-year warranty |
Specifications
| MEGAWISE RZ 618-3 | MEGAWISE RZ 711 | |
|---|---|---|
| Cooling and power | ||
| Cooling capacity | 4,777 BTU | 5,118 BTU |
| Heating capacity | 2,730 BTU | - |
| Rated cooling power | 420 W | - |
| Power input | 110 V AC | 110 V AC |
| Battery | Not included | Not included |
| Size and noise | ||
| App control | No | No |
| Warranty | ||
| Warranty | 1 year | 1 year |