A single-number ranking hides what is being optimised. Here there are two axes at a time, and the question «which are the best» is answered by those nobody beats on both measures.
On Cost per kWh, further left is better; on Nominal capacity, higher up. The coloured corner, “best zone”, is where both measures are good.
Filled in are the 3 products that no other beats on both measures. They are not «the best»: they are the ones nobody dominates.
| Product | Cost per kWh · €/kWh | Nominal capacity · kWh | Verified |
|---|---|---|---|
| BLUETTI Apex 300 | 723.02 | 2.76 | Yes |
| BLUETTI AC200PL | 802.95 | 2.30 | Yes |
| EcoFlow DELTA Pro 3 | 805.42 | 4.10 | Yes |
| EcoFlow DELTA Pro Ultra | 829.75 | 6.14 | Yes |
| Anker SOLIX F3800 | 963.28 | 3.84 | Yes |
| BLUETTI AC240 | 1041.02 | 1.54 | Yes |
| BLUETTI AC240P | 1247.42 | 1.84 | Yes |
On Energy density, further right is better; on Continuous output, higher up. The coloured corner, “best zone”, is where both measures are good.
Filled in are the 3 products that no other beats on both measures. They are not «the best»: they are the ones nobody dominates.
Striped, paler points have at least one of the two measures without a verified source.
One sheet is missing, because it does not state both measures.
| Product | Energy density · Wh/kg | Continuous output · W | Verified |
|---|---|---|---|
| BLUETTI AC240 | 46.50 | 2400 | Partly |
| BLUETTI AC240P | 55.80 | 2400 | Partly |
| Anker SOLIX F3800 | 64 | 6000 | Partly |
| BLUETTI Apex 300 | 72.80 | 3840 | Partly |
| EcoFlow DELTA Pro 3 | 79.50 | 4000 | Partly |
| BLUETTI AC200PL | 81.40 | 2400 | Partly |
