expiredhnchen posted Nov 17, 2023 11:06 AM
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expiredhnchen posted Nov 17, 2023 11:06 AM
EcoFlow LiFePO4 Portable Power Stations: RIVER 2 256Wh w/ free solar charging cable $157 or $100 YMMV, RIVER 2 Pro 768Wh w/ free ecoflow waterproof backpack $375 - FS
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$289
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The AC inverter itself uses energy to run. Then you have the inefficiency of converting DC energy of the battery to AC energy for the inverter to output. Then you're converting AC energy back to DC energy with an adapter for your laptop. If you have a cheap adapter that does not have Power Factor Correction (PFC) then a lot of the AC energy is lost to heat in the conversion to DC.
The combined efficiency of using an AC adapter with the portable power station may approach 50% at worst; as opposed to 80-90% or so with USB-C. Even the car socket is limited to 100W so using a 90% efficient DC to DC converter is precarious as a laptop may overload it.
You can also still use your laptop through usb-c and it will simply discharge at a slower rate. I don't have the time to run some numbers, but this Ecoflow unit will either get fully discharged or will be close to it in the time it takes to run down a fully charged laptop at 60w.
The River 2 Pro has a proper 100W USB-C port. I would buy it at Costco for $400 where it can be returned no questions asked. The Amazon listing does not allow returns, say "Non-returnable due to hazmat safety reasons", which is BS.
refurbished river 2 is 119
similar lantern is $20 max
Total = 144 while this bundle is 169
refurbished river 2 is 119
similar lantern is $20 max
Total = 144 while this bundle is 169
u will need larger 375 version
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refurbished river 2 is 119
similar lantern is $20 max
Total = 144 while this bundle is 169
Cart deleted.
River 2 Pro ... slightly cheaper than $400 deal from Costco ... so ... decisions decisions.
Edit: Nevermind. For other people having this issue, just go on the Amazon mobile app. On a desktop on Chrome, the "Add both to cart" option is not available.
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