expired Posted by hnchen • Nov 17, 2023
Nov 17, 2023 11:06 AM
Item 1 of 1
expired Posted by hnchen • Nov 17, 2023
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
$100
$289
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River 2 Pro ... slightly cheaper than $400 deal from Costco ... so ... decisions decisions.
https://slickdeals.net/f/16867871-ef-ecoflow-portable-power-station-river-2-256wh-lifepo4-battery-177-05
With the free solar charging cable, it effectively makes the River 2 only $136 (IYKYK)
73.2W x 8 hours x 1.25 to account for 80% usable capacity x 1.2 to account for the 15% DC/AC power loss = you will roughly need a power generator rated for around 900Ah (rounded up from 878Ah) to safely make it through 8 hours.
If you have a DC/DC power supply [cpap.com], you possibly only need a 73.2W x 8 hours x 1.25 to account for 80% usable capacity = 732Wh then you could use the River 2 Pro with a capacity of 768Wh.
Unfortunately, this means that the 6% off coupon no longer works.
This still makes the river 2 a smoking deal. $169 for the River 2 with free solar charge cable and camping light. It brings the price of the river 2 down to $100 after returning the two free gifts.
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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.
I bought this unit during the last sale. Returned because the 600w surge is total marketing BS. The appliance I'd tried it with is rated at 450w max, but the unit got overloaded and shut down the second I plugged it in. Maybe defective unit? Really itching to give this another shot since it is a better deal than last time.
EDIT: can anyone confirm/deny that this hack actually works? I don't have the need for a cheap light and a solar cable, so this wouldn't be that slick unless it's indeed hackable.
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.
I bought this unit during the last sale. Returned because the 600w surge is total marketing BS. The appliance I'd tried it with is rated at 450w max, but the unit got overloaded and shut down the second I plugged it in. Maybe defective unit? Really itching to give this another shot since it is a better deal than last time.
EDIT: can anyone confirm/deny that this hack actually works? I don't have the need for a cheap light and a solar cable, so this wouldn't be that slick unless it's indeed hackable.
Think of the surge as being helpful for motor start up surges like refrigerators and AC units.
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.
DC power supply is worth considering if you do this regularly.
Unfortunately, this means that the 6% off coupon no longer works.
This still makes the river 2 a smoking deal. $169 for the River 2 with free solar charge cable and camping light. It brings the price of the river 2 down to $100 after returning the two free gifts.
Sign up for a Slickdeals account to remove this ad.
DC power supply is worth considering if you do this regularly.
Looking for ComEd service interruption insurance.
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