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David_David 5K Views
Nov 24, 2025 1:39 PM

EcoFlow DELTA 3 Plus Portable Power Station with 800W Alternator Charger $592.49

$592

$790

25% off
Costco Wholesale
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Costco Next has Ecoflow Delta 3 Plus (1kiW) + 800W Alternator Charger on sale promo price down to $592.49 !

Includes:
Delta 3 Plus Portable Power Station (1kWh)
800W Alternator Charger

2x 500w solar input = 1000w Solar input total
10ms UPS switchover
1-5kWh expandable with DELTA 3 Extra Battery, DELTA Pro 3 Extra Battery, DELTA 2 Extra Battery or DELTA 2 Max Extra Battery
1800W AC output, 2200W (surge 3600W) with X-Boost
5 fast recharging methods (AC, Solar, 800W Alternator Charger, Smart Generator 3000 (Dual Fuel), Multicharging)
Charge while you drive, and stay powered up on the road(800W Alternator Charger)

Need to be Costco member. Logged into account, and click thru to Ecoflow Costco Next Portal costco.ecoflow.com

https://costco.ecoflow.com/produc...or-charger
Community Notes
About the Poster
Deal Details
Community Notes
About the Poster
Costco Next has Ecoflow Delta 3 Plus (1kiW) + 800W Alternator Charger on sale promo price down to $592.49 !

Includes:
Delta 3 Plus Portable Power Station (1kWh)
800W Alternator Charger

2x 500w solar input = 1000w Solar input total
10ms UPS switchover
1-5kWh expandable with DELTA 3 Extra Battery, DELTA Pro 3 Extra Battery, DELTA 2 Extra Battery or DELTA 2 Max Extra Battery
1800W AC output, 2200W (surge 3600W) with X-Boost
5 fast recharging methods (AC, Solar, 800W Alternator Charger, Smart Generator 3000 (Dual Fuel), Multicharging)
Charge while you drive, and stay powered up on the road(800W Alternator Charger)

Need to be Costco member. Logged into account, and click thru to Ecoflow Costco Next Portal costco.ecoflow.com

https://costco.ecoflow.com/produc...or-charger

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13 Comments

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Nov 24, 2025 4:49 PM
219 Comments
Joined Dec 2022
EvlhamburglarNov 24, 2025 4:49 PM
219 Comments
All these have really gone down in price
Nov 24, 2025 6:10 PM
687 Comments
Joined Sep 2007
LomicNov 24, 2025 6:10 PM
687 Comments
Note that the 800w alternator charger requires a vehicle with a heavy duty alternator. For most vehicles you'll want to limit yourself to the 500w charger or it can burn up your alternator.
1
Nov 24, 2025 8:40 PM
97 Comments
Joined Nov 2023
TenderRecess483Nov 24, 2025 8:40 PM
97 Comments
Quote from Lomic View quoted comment :
Note that the 800w alternator charger requires a vehicle with a heavy duty alternator. For most vehicles you'll want to limit yourself to the 500w charger or it can burn up your alternator.
You are 100% correct that you need to be careful, but you can limit the power draw with the software. I have the 800 watt alternator charger but it's still unopened in the box. I will open it if we have a multi day power outage or if I am building a camper van
Nov 25, 2025 3:16 AM
299 Comments
Joined Sep 2014
ComcastratedNov 25, 2025 3:16 AM
299 Comments
These work well together with a generic 12v lifepo4 battery. It'll allow for charging at a much faster rate and you won't be limited to using the solar input at only 200 watts.
Nov 25, 2025 6:51 PM
821 Comments
Joined Feb 2011
jenesuispasbavaNov 25, 2025 6:51 PM
821 Comments
Quote from Comcastrated View quoted comment :
These work well together with a generic 12v lifepo4 battery. It'll allow for charging at a much faster rate and you won't be limited to using the solar input at only 200 watts.
Do you mean you connect the Delta 3 Plus and the generic 12V battery with the alternator charger in between? That'll extend my fridge runtime to over a week with a 300Ah external battery lol, nice.
Nov 26, 2025 5:28 PM
401 Comments
Joined May 2013
wwglenNov 26, 2025 5:28 PM
401 Comments
Quote from TenderRecess483 View quoted comment :
You are 100% correct that you need to be careful, but you can limit the power draw with the software. I have the 800 watt alternator charger but it's still unopened in the box. I will open it if we have a multi day power outage or if I am building a camper van
You might want to open it up and hook it to a battery and EcoFlow unit. That way you can upgrade the firmware. Some of the older firmware had problems, especially with 24V systems.
1
Nov 26, 2025 5:29 PM
401 Comments
Joined May 2013
wwglenNov 26, 2025 5:29 PM
401 Comments
Quote from jenesuispasbava View quoted comment :
Do you mean you connect the Delta 3 Plus and the generic 12V battery with the alternator charger in between? That'll extend my fridge runtime to over a week with a 300Ah external battery lol, nice.
Yes, and if you have solar input, you can reverse charge the stand alone battery using the alternator charger.
1

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Nov 28, 2025 4:34 AM
263 Comments
Joined Aug 2021
Stephen77Nov 28, 2025 4:34 AM
263 Comments
Quote from Lomic View quoted comment :
Note that the 800w alternator charger requires a vehicle with a heavy duty alternator. For most vehicles you'll want to limit yourself to the 500w charger or it can burn up your alternator.
How to check your vehicle? Which is big? Which one is small?
Nov 28, 2025 4:44 PM
97 Comments
Joined Nov 2023
TenderRecess483Nov 28, 2025 4:44 PM
97 Comments
Quote from wwglen View quoted comment :
You might want to open it up and hook it to a battery and EcoFlow unit. That way you can upgrade the firmware. Some of the older firmware had problems, especially with 24V systems.
Good point. I probably should do that. I purchased my unit this summer but it could still have an old firmware
Nov 29, 2025 12:01 AM
992 Comments
Joined Feb 2008
SagiNov 29, 2025 12:01 AM
992 Comments
Ordered it with the PayPal 20% Pay Later offer. Good deal!
1
Dec 2, 2025 4:51 PM
20 Comments
Joined May 2009
unyi3ldingDec 2, 2025 4:51 PM
20 Comments
Decided to jump on this. I've been keeping an eye on the Delta 3 Plus... for some reason it has stayed at $699 since August (and EcoFlow seems to only be promoting the new "Delta 3" variants, which has become super confusing nomenclature).
Dec 7, 2025 2:49 AM
20 Comments
Joined Oct 2022
TamadDec 7, 2025 2:49 AM
20 Comments
Quote from Lomic View quoted comment :
Note that the 800w alternator charger requires a vehicle with a heavy duty alternator. For most vehicles you'll want to limit yourself to the 500w charger or it can burn up your alternator.
The app has the ability to throttle down on output.
Dec 19, 2025 3:59 PM
518 Comments
Joined Nov 2019
MaroonPocket778Dec 19, 2025 3:59 PM
518 Comments
The idea of am alternator charger for am wxtra battery bugs me so much vs allowing a generic 3rd part battery of the same lifepo4 chemistry. Should Not be this difficult......

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