Cybertake S2 Pro
A tent or van air conditioner that takes DC power directly, for buyers who want to skip the inverter.
Amazon $779$779
The Cybertake S2 Pro is the better battery-powered portable air conditioner overall, rated 3.1 to 2.7. The Cybertake S2 Pro leads on value and noise. The Zero Breeze Mark 3 wins on weight. The Cybertake S2 Pro costs $619 less ($779 vs $1,398).
Prices were last checked November 4, 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.
Zero Breeze Mark 3
The established battery-air-conditioner brand, best bought with its own battery for a multi-hour night.
Amazon $1,398$1,398
Which should you buy?
- Choose the Cybertake S2 Pro for value ($152.75 per 1,000 BTU ($779, 5,100 BTU) vs $264.77 per 1,000 BTU ($1,398, 5,280 BTU)) and noise (40 dB rated vs 46 dB rated).
- Choose the Zero Breeze Mark 3 for weight (22 lb vs 25.6 lb).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every runs on DC or a battery battery-powered portable air conditioner; a clear win is highlighted. How we rank explains each one.
| Factor weight | Cybertake S2 Pro | Zero Breeze Mark 3 |
|---|---|---|
| Overall rating | 3.1/5 | 2.7/5 |
| Value 30% | 42 $152.75 per 1,000 BTU ($779, 5,100 BTU) | 8 $264.77 per 1,000 BTU ($1,398, 5,280 BTU) |
| Efficiency 25% | 50 rated cooling power not published (neutral score used) | 50 rated cooling power not published (neutral score used) |
| Noise 15% | 100 40 dB rated | 70 46 dB rated |
| Weight 10% | 70 25.6 lb | 80 22 lb |
| Warranty 20% | 0 1-year warranty | 0 1-year warranty |
Specifications
| Cybertake S2 Pro | Zero Breeze Mark 3 | |
|---|---|---|
| Cooling and power | ||
| Cooling capacity | 5,100 BTU | 5,280 BTU |
| Heating capacity | 6,100 BTU | - |
| Power input | DC or AC | DC or AC |
| Battery | Not included | Not included |
| Size and noise | ||
| Weight | 25.6 lb | 22 lb |
| Noise | 40 dB | 46 dB |
| Warranty | ||
| Warranty | 1 year | 1 year |