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popularDavid_David posted Nov 24, 2025 01:39 PM
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Item 1 of 2
popularDavid_David posted Nov 24, 2025 01:39 PM

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

$592

$790

25% off
Costco Wholesale
11 Comments 2,535 Views
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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
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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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11 Comments

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Nov 24, 2025 04:49 PM
16 Posts
Joined Dec 2022
EvlhamburglarNov 24, 2025 04:49 PM
16 Posts
All these have really gone down in price
Nov 24, 2025 06:10 PM
650 Posts
Joined Sep 2007
LomicNov 24, 2025 06:10 PM
650 Posts
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 08:40 PM
58 Posts
Joined Nov 2023
TenderRecess483Nov 24, 2025 08:40 PM
58 Posts
Quote from Lomic :
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 03:16 AM
276 Posts
Joined Sep 2014
ComcastratedNov 25, 2025 03:16 AM
276 Posts
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 06:51 PM
719 Posts
Joined Feb 2011
jenesuispasbavaNov 25, 2025 06:51 PM
719 Posts
Quote from Comcastrated :
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 05:28 PM
378 Posts
Joined May 2013
wwglenNov 26, 2025 05:28 PM
378 Posts
Quote from TenderRecess483 :
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 05:29 PM
378 Posts
Joined May 2013
wwglenNov 26, 2025 05:29 PM
378 Posts
Quote from jenesuispasbava :
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 04:34 AM
252 Posts
Joined Aug 2021
Stephen77Nov 28, 2025 04:34 AM
252 Posts
Quote from Lomic :
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 04:44 PM
58 Posts
Joined Nov 2023
TenderRecess483Nov 28, 2025 04:44 PM
58 Posts
Quote from wwglen :
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
Pro
Nov 29, 2025 12:01 AM
921 Posts
Joined Feb 2008
Sagi
Pro
Nov 29, 2025 12:01 AM
921 Posts
Ordered it with the PayPal 20% Pay Later offer. Good deal!
1
Dec 02, 2025 04:51 PM
18 Posts
Joined May 2009
unyi3ldingDec 02, 2025 04:51 PM
18 Posts
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).

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