diy solar

diy solar

Looking for a 12V 400ah LFP that won't break my wallet

J

JOE KIDD

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Joined
Feb 12, 2024
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Li Time or Power Queen have a decent price and reviews, or should I look at something else?
I would like grade A cells but probably won't get those in these manufacturers. My newest Li Time 200ah tested@204C & 2518WH FYI.
 
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There was a 400ah Kepworth battery on Amazon last week. I bought a 300ah Kepworth battery a couple weeks ago and I don't have any complaints.
 
If you compare the values BSM A of these batteries, peak current A and time, maximum charge, etc. I think the Eco Worthy 280A offers a lot of value for money, if I need more A, buy two and plug in parallel

Eco Worthy 280A, bsm 250A, peak current 850A/10s, standard charger 140A and max conntinous charger/discharger 250A...
 
NBs said:
I think the Eco Worthy 280A offers a lot of value for money
Click to expand...
I first thought that was fake spec, but based on bellow specs, that seem legit.
Is anyone had try eco worthy 280Ah?

Eco worthy:__540$, 280Ah, 64 lbs, 21x9.5x8.8''
Li time:_______530$, 200Ah, 44 lbs, 21x8.2x8.5''
Redodo:______530$, 200Ah, 46 lbs, 21x8.2x8.5''
 
yabert said:
I first thought that was fake spec, but based on bellow specs, that seem legit.
Is anyone had try eco worthy 280Ah?

Eco worthy:__540$, 280Ah, 64 lbs, 21x9.5x8.8''
Li time:_______530$, 200Ah, 44 lbs, 21x8.2x8.5''
Redodo:______530$, 200Ah, 46 lbs, 21x8.2x8.5''
Click to expand...
I just bought two 280A so I haven't had any experience, but I'm looking for information about Eco Worthy and tests in Germany, you tube, amazon etc.

These seem to be mostly good in terms of quality, including of course disappointments (amazon) in tests 100A batteries have done well. It should be noted that these 280A batteries differ in technology from 100A batteries because the cycle forecast is higher +6000 vs +3000.


Test 1 year

techtest.org

6x 100Ah LiFePO4 Akkus im Vergleich, welcher ist am besten? (ECO-Worthy, LiTime, Supervolt,....) - Techtest

LiFePO4 ist die Akku-Technologie der Wahl für Solar-Puffer-Speicher und Bastler, egal ob nun daheim oder im Wohnwagen. Erfreulicherweise sind große 100Ah LiFePO4 in den letzen Monaten und Jahren um einiges günstiger und besser verfügbar geworden. So findest Du bei Amazon und eBay dutzende...
techtest.org techtest.org

Here are some examples..
 
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Thanks for the link. It's interesting. They end with the same conclusion than me:

The same manufacturer?​

I don't have any insider information for this assumption, but I'll put forward the theory that the Power Queen, LiTime and Redodo batteries could come from the same manufacturer. The packaging of the batteries is just suspiciously similar
 
DIY Pack, 200Ah cells, 4s-2P JK or JBD BMS, terminals Class T fuse.
18650 store is in your area of the US, for cells, other options available.
And it's fun.
 
Thanks Gentlemen for all the info. I ended up with the Li Time 400ah. After a few partial discharges/charges, I'm doing a capacity test now.
Update: This one's pretty healthy. Discharged to 11.5V under a +/- 815W load was 5288Wh
 
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