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forum thread Posted by sr71 • Oct 27, 2024
forum thread Posted by sr71 • Oct 27, 2024

Anker - Anker-SOLIX F3800 Whole-Home Backup Power Station(3.8kWh-58.8kWh) (3840 Wh Capacity) - Dark gray $2549

$2,549

$3,499

27% off
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Model: Anker - Anker-SOLIX F3800 Whole-Home Backup Power Station(3.8kWh-58.8kWh) (3840 Wh Capacity) - Dark gray

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Sort: Lowest to Highest | Last Updated 7/2/2025, 11:12 AM
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Lowe's$2,999

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Pro
Oct 27, 2024
778 Posts
Joined Aug 2005
Oct 27, 2024
dong888
Pro
Oct 27, 2024
778 Posts
I am in the market for a off-grid battery pack to charge an EV. I already have a solar system with backup battery but want to store the excess energy instead of exporting energy back to PGE for less than 3 cents per kwh.

While Anker or Ecoflow have better system, I have found the EG4 system to be the cheapest in terms of $ per kwh (example below). If anyone have better suggestions, please feel free and chime in.

https://signaturesolar.com/eg4-wa...ndl-e0009/
1
Oct 27, 2024
248 Posts
Joined Jan 2017
Oct 27, 2024
RoyGeeBiv
Oct 27, 2024
248 Posts
Getting closer. Waiting for one of these to drop to 2000 or perhaps this + extra battery for 3000 and then count me in.
Oct 28, 2024
72 Posts
Joined Mar 2020
Oct 28, 2024
CoralCorn3547
Oct 28, 2024
72 Posts
This model has a lot of flaws that turn me off:
  • Low Voltage and High Amperage Solar PV Input. Only 60 volts max and 25 Amps. You can't hook both XT60 ports to an external car or server rack battery, they won't accept power from two sources sharing the same electric grounding.
  • High inverter idle power usage. The inverter eats up 70+ watts just idling. That's about 1.68+ KWH right there for a whole day.
  • AC input turns off when you're using the 240-volt output, you can only do solar input to keep it supplied with power.
  • No dual input support, you can't charge using both AC and Solar at the same time (I heard firmware update changed this but can't confirm.)
If you're only this for short duration use, I think it will be just fine, but as a home power backup there is a lot to be desired with this. Its a nice platform but hopefully they come out with an improved mode that fixes these issues.
Oct 28, 2024
88 Posts
Joined Sep 2007
Oct 28, 2024
protomech
Oct 28, 2024
88 Posts
Quote from dong888 :
I am in the market for a off-grid battery pack to charge an EV. I already have a solar system with backup battery but want to store the excess energy instead of exporting energy back to PGE for less than 3 cents per kwh.

While Anker or Ecoflow have better system, I have found the EG4 system to be the cheapest in terms of $ per kwh (example below). If anyone have better suggestions, please feel free and chime in.

https://signaturesolar.com/eg4-wa...ndl-e0009/
Anker is 65 cents per kWh, not great overall. With expansion battery sale price drops down to about 50 cents per kWh

If you want to stick to portable power stations, a fully populated 15.4 kWh E3600LFP + 4x EP3000 costs $4935 or 32 cents per kWh.

"I just want to store more energy" is exactly the use case the EG4 powerpro is aimed at. About 22 cents per kWh and a 10 year warranty, biggest challenge is moving 300 lbs around and installing it…

If you want to do a little assembly, a 4S 48V 280Ah stack of Ecoworthy batteries plus a set of battery cables typically costs around $1600 on sale, about 11 cents per kWh.
Oct 29, 2024
2,856 Posts
Joined Sep 2008
Oct 29, 2024
ChiefAlchemist
Oct 29, 2024
2,856 Posts
Quote from protomech :
Anker is 65 cents per kWh, not great overall. With expansion battery sale price drops down to about 50 cents per kWh

If you want to stick to portable power stations, a fully populated 15.4 kWh E3600LFP + 4x EP3000 costs $4935 or 32 cents per kWh.

"I just want to store more energy" is exactly the use case the EG4 powerpro is aimed at. About 22 cents per kWh and a 10 year warranty, biggest challenge is moving 300 lbs around and installing it…

If you want to do a little assembly, a 4S 48V 280Ah stack of Ecoworthy batteries plus a set of battery cables typically costs around $1600 on sale, about 11 cents per kWh.
Can you elaborate on the last bit? Maybe a link to an article that fleshes it out?
Oct 29, 2024
147 Posts
Joined May 2022
Oct 29, 2024
Jellical
Oct 29, 2024
147 Posts
Quote from protomech :
Anker is 65 cents per kWh, not great overall. With expansion battery sale price drops down to about 50 cents per kWh

If you want to stick to portable power stations, a fully populated 15.4 kWh E3600LFP + 4x EP3000 costs $4935 or 32 cents per kWh.

"I just want to store more energy" is exactly the use case the EG4 powerpro is aimed at. About 22 cents per kWh and a 10 year warranty, biggest challenge is moving 300 lbs around and installing it…

If you want to do a little assembly, a 4S 48V 280Ah stack of Ecoworthy batteries plus a set of battery cables typically costs around $1600 on sale, about 11 cents per kWh.
ecowothy is not listed AFAIK tho. E.g. - "illegal" to use in most cases =/
Oct 29, 2024
1,339 Posts
Joined Dec 2005
Oct 29, 2024
alphawave
Oct 29, 2024
1,339 Posts
Quote from Jellical :
ecowothy is not listed AFAIK tho. E.g. - "illegal" to use in most cases =/
You meant UL listed, I think. Wink

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Oct 29, 2024
147 Posts
Joined May 2022
Oct 29, 2024
Jellical
Oct 29, 2024
147 Posts
Quote from alphawave :
You meant UL listed, I think.
I meant any appropriate listing, CSA, ETL, and mostly UL - yes. (whatever is accepted) I'm currently thinking about just building a small "legal" power storage with wall-mounted eg4 and a shed with eco-worthy batteries over there. In the worst case - even if they burn down with the shed - no one would care.
Oct 29, 2024
68 Posts
Joined Apr 2017
Oct 29, 2024
MatthewSerta
Oct 29, 2024
68 Posts
Looks like its dead now. Best Buy showing it as $2,999 again
Oct 29, 2024
100 Posts
Joined Aug 2012
Oct 29, 2024
michaelkittrell
Oct 29, 2024
100 Posts
Quote from protomech :
Anker is 65 cents per kWh, not great overall. With expansion battery sale price drops down to about 50 cents per kWhIf you want to stick to portable power stations, a fully populated 15.4 kWh E3600LFP + 4x EP3000 costs $4935 or 32 cents per kWh."I just want to store more energy" is exactly the use case the EG4 powerpro is aimed at. About 22 cents per kWh and a 10 year warranty, biggest challenge is moving 300 lbs around and installing it…If you want to do a little assembly, a 4S 48V 280Ah stack of Ecoworthy batteries plus a set of battery cables typically costs around $1600 on sale, about 11 cents per kWh.
I did the eco-worthy 4s 48v 280ah for about $1600. They seem to offer a 20% off sale about every month since at least august. I also bought their 5000w all in one inverter (but am not using solar yet).
Everything is working fine so 15kw and 5k 120v output for like $2050 over the past 2 months. I used it for the last 7 weeks while camping, run the generator every other day for 4 hours or so to keep the battery between 20% and 80% (not a full charge). I plan to hook it up as backup power for the house and get some solar panels next year. The connections were not difficult and there is plenty of youtube if you don't know how. I spent another 300 or so on wire/terminals/crimper/breakerbox/fuses etc...

What I don't like is mostly about the inverter. can only charge shore/grid/generator power at around 2400 watts (120v 20 amps) as the battery charging setting can only go up to 40 amps (at ~60v to charge 48v battery). I found this annoying as I was running off generator for the last 2 months... If I could charge the batteries at a higher amps I wouldn't have to run the generator as long but even if that was fixed, I'd run into problems with input power being limited to 120v only. For $500 (on sale) for the inverter, I couldn't find anything remotely comparable and peace of mind not having to worry about finger pointing between eco-worthy and some other inverter company.
The "wireless" feature they give you seems to be worthless and the ios app/website are not functional or are too complicated for me to figure out and seems to be designed for reporting usage data rather than configuring / monitoring the system. I do regret not buying the bluetooth batteries which are more expensive because I want to know if the inverter is telling me the truth about its state of charge etc.
The US based support was fine. The manuals are bad as they refer to 3 or 4 different models and none of those models matched anything on my actual product.
Oct 30, 2024
258 Posts
Joined Oct 2008
Oct 30, 2024
ck90211
Oct 30, 2024
258 Posts
Solid deal at $2549 but I like Delta Pro 3 better because it can be charged by a small generator (AC input) while outputting (AC output).
Oct 30, 2024
486 Posts
Joined Jan 2013
Oct 30, 2024
AnsonL6358
Oct 30, 2024
486 Posts
Will something like this power your AC for a few days?
1
Oct 31, 2024
239 Posts
Joined Nov 2011
Oct 31, 2024
ianf
Oct 31, 2024
239 Posts
Quote from AnsonL6358 :
Will something like this power your AC for a few days?
Whole home AC? No. Window shaker AC? Also no. Depending on how big the window shaker is, you "could" get through a night...maybe.

I have the F3800 with an additional battery (about 7.6kWh total). That'll get me through the night powering my fridge and Window AC (which was my use case, since I'm in hurricane country).

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