Anker EverFrost Powered Cooler 30 vs Anker EverFrost Powered Cooler 40

What separates these two

Where both brands give a figure measured the same way, the two are close. None of the gaps is big enough to count (the sizes are listed at the end of this section).

Price isn't compared here yet. That needs a second shop selling each one for about the same price (within 10%), which shows the price is real. Today: price, EverFrost Powered Cooler 30 $799 and EverFrost Powered Cooler 40 $599.

A difference is listed above only when both brands measure a figure the same way and the gap is at least: capacity: 10% or more; price: 10% or more; price per litre: 10% or more; power use: 15% or more; weight: 8% or more; zones: one has it and the other doesn't; coldest setting: 5 °C or more. Every comparison on this site uses the same gaps.

All the specs side by side

Capacity is the total in litres as listed. Power use is compared only when it was measured at 32 °C outside, and the inside setting is shown beside it; a dual-zone figure (fridge and freezer both running) is never set against a single-zone one. Most figures come from the retailers' product pages, because the brands don't allow their own pages to be reused.

Every price

What each shop charges for the fridge on its own, cheapest first. Kits (the fridge sold with extras, like a cover or a battery) are on each product's page and don't count here.

What neither brand tells you

These figures would help answer the questions above, but neither brand gives them:

• Power use at 32 °C outside: the figure that decides how long a battery runs it.
• Weight: what you lift in and out of the car.
• Outside size: whether it fits the space in your car.
• Capacity.
• Power use.
• Weight.
• Zones.
• Coldest setting.