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Are these good LiFePo4 batteries - Lossigy?

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Anjisan63

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Feb 3, 2021
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Has anyone used the Lossigy LiFePO4 12V200Ah (2560Wh) battery?

It comes with a built in 100A BMS, and looks solidly built.

Amazon has them for sale in a singular, dual, or a groupings of 4 for these batteries. At $3,499.99 for the 4 pack, it seems far more economical than it should (4 batteries combined = 10,240Wh). About 10KWh of LiFePo4 storage @ $3.5k = 1000Wh @ $350.

For comparison - a 12V100Ah Battleborn battery [1/8 of this solution] on Amazon costs $949, or the purchase of 8 Battle Borns to build a similar storage would be $7,592.00

My problems right now? Zero reviews. Sold by the Junson Bty Store through Amazon which appears to be a Chinese company, and I worry about buying essentially Chinese junk.

713z3lG6FrL._AC_SL1500_.jpg
 
Still looking for anyone's experience with these specific batteries. They're available at Amazon, and they seem right for the money, but.... Who knows...?
 
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I just saw and almost bought one that's 12V @ 300 Ah





With taxes and shipping, it is about $1,500 for me.
 
Some have had experience buying this 12v 300 Ah battery. the price looks great but there is a doubt if they will be good. I would appreciate knowing.
 
I have a 300 Ah version of this battery arriving tonight! I will charge it up and let everyone know how that goes.
 
yak18 said:
Haha I have not forgotten. I am not putting it to any use at least for a week or two. Do you have any questions you want answered?
Click to expand...
Yeah I want to know how they work - do you actually get 300AH? Do they give you enough info to program a Victron Multiplus?
 
Hi, I'm new here and just joined to give you folks my input on my Lossigy 300Ah battery that I bought for my RV.
I ordered it off Amazon as it had a 10% discount and was a lower $/Ah (for a complete replacement battery) that had good reviews on their site.
It took 8 days to get to my house in PA (from CA) from the time I ordered it using the std. "free" shipping. With 6% state sales tax, the bill was $1288. The battery was packed in styrofoam top & bottom (but not on the sides), and was in excellent shape. The voltage read 13.2V.
It weighs 69 lbs. - exactly 50% more than the little group 24 LA it replaced, but it is approx. 3x the size and 10x the capacity. I installed a Xantrex
XC2000 inverter charger and also a Victron 500A smart shunt on the ground (-) leg of the battery. I "programmed" the charger for LiFePO4 batteries w/ a 50A charging rate. After I got my cables, breakers, etc., etc., etc. installed and let it set on shore power charging for a few days, I ran a capacity test this AM. I plugged a space heater into the back of the inverter just after taking it off shore power. The Xantrex read 880-890W ac output, while the Victron read 1015-1025Wdc (that included an extra 40-50W running the RV's 12V refer. - not seen by the Xantrex), so I guess the inverter's eff. is around 90%. The battery started out @ 13.55V, and the BMS uncoupled the battery @ 10.25V, 297Ah later.
So yes, it is a 300Ah battery and I'm very satisfied w/ it's performance (so far :)).
 
vermar70 said:
Hi, I'm new here and just joined to give you folks my input on my Lossigy 300Ah battery that I bought for my RV.
I ordered it off Amazon as it had a 10% discount and was a lower $/Ah (for a complete replacement battery) that had good reviews on their site.
It took 8 days to get to my house in PA (from CA) from the time I ordered it using the std. "free" shipping. With 6% state sales tax, the bill was $1288. The battery was packed in styrofoam top & bottom (but not on the sides), and was in excellent shape. The voltage read 13.2V.
It weighs 69 lbs. - exactly 50% more than the little group 24 LA it replaced, but it is approx. 3x the size and 10x the capacity. I installed a Xantrex
XC2000 inverter charger and also a Victron 500A smart shunt on the ground (-) leg of the battery. I "programmed" the charger for LiFePO4 batteries w/ a 50A charging rate. After I got my cables, breakers, etc., etc., etc. installed and let it set on shore power charging for a few days, I ran a capacity test this AM. I plugged a space heater into the back of the inverter just after taking it off shore power. The Xantrex read 880-890W ac output, while the Victron read 1015-1025Wdc (that included an extra 40-50W running the RV's 12V refer. - not seen by the Xantrex), so I guess the inverter's eff. is around 90%. The battery started out @ 13.55V, and the BMS uncoupled the battery @ 10.25V, 297Ah later.
So yes, it is a 300Ah battery and I'm very satisfied w/ it's performance (so far :)).
Click to expand...
Excellent - Thank you
 
Found this site looking for info on these batteries.

Actually I was looking at a different version of the Lossigy 200Ah battery:
1619582359355.png
Both versions state BMS has high and low temp auto cut off with the following parameters:
Charging state: Low Temp cut-off is 32F, High Temp at 113F
Discharge cut-offs at: -4F Low and140F High

I doubt I'll be charging below freezing, but it's a nice protection feature (if it works).
I could not find any key differences between the different versions other than battery case color and cost.

I like that the 200Ah battery isn't packaged in the same case as a 300Ah battery and takes up less volume than most competitors.
 
Interesting side note on the Yellow vs Black versions.
Expedited shipping on the Yellow version was $54 vs $9 for the Black version and the Black version was $30 cheaper to start with.
 
I looked at them initially due to their unique form/dimensions. Two of those 200Ah batteries would have fit in the RVs' battery space (5th wheel basement). That would've given 400Ah of reserve power (well, 5120W of reserve power)! Anyway, since I'm new at this and understand that 2 Li batts. in parallel should be brought up to the same level each before connecting (I might get it wrong :-(), add another $40 for 2/0 parallel jumpers, and a little extra work/parts for hold-down clamps, I thought it would be best (for me) to go w/ a single battery. The Lossigy 300Ah battery form is the same size and weight as others' 200Ah, has a higher power density (+10%) than their 200Ah above, and is a bit lower cost (per Ah) w/ the 10% discount.
Bottom line, if I wanted a 200Ah single battery, that black Lossigy would be my pick based on the specs.
I noticed that difference in expedited shipping cost too. When ordering the blue 300Ah, I chose std. "free" shipping because of the quick shipping comments in the reviews. So it was delivered in 8 days instead of 3 (maybe).
 
The nice thing about the 300Ah battery is the BMS system can handle a higher charge/discharge rate. The Lossigy 200Ah batteries only have 100A max discharge, while the 300Ah battery is 200A.
I believe Chins and Ampere time offer 200Ah batteries with 200A max discharge, but those are in a 300Ah case.
I'm looking to put 350W of solar to a new travel trailer so I can work from home, somewhere other than home. I'd like to go with a 300Ah, but I'd like to move the battery to a compartment rather than leaving it out in a box on the tongue. Since my compartment space is at a premium, I'm sticking with a smaller 200Ah size... for now.
Since I'm using this as a learning lesson, the nice thing is I have two other 200W solar systems, with lead acid batteries, that I could repurpose this battery with if I decide I need more power in the trailer.
 
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I would think keeping it out on the tongue w/ an appropriate locked box would be a great place (if you don't need that space for anything else). I was thinking about a different location for my battery (like under the bed or in the very back) to free up some more basement space, but w/ fat cables and such, it got too complicated (for me). I just put it where the OE L/A battery was. I removed the OE battery box w/ venting hose, and now have more space for storing longer items (laying in front of the new LiFePO4). I also installed the inverter/charger directly above the battery on the wall of the basement.
 
The info on Amazon indicates a 0C charge cut-off and a -20C discharge cut-off. But nothing regarding Low Voltage.

Interestingly enough, I just received the black shell version of the Lossigy 12V 200Ah battery a few minutes ago.
Per the product manual included...
Over Volt Disconnect 15V / Reconnect 14.2V
Low Volt Disconnect 10.8V / Reconnect 12.4V
Discharge Limit Disconnect 10.4V / Reconnect 11.6V
Charge Temp Range 0C to 50C
Discharge Temp -20C to 60C

Whether or not any of this is accurate is hard to say. I'm not really set up to test low temp BMS cut-off and since I'm new to this, not sure the best way to test.

Any suggested links to safely testing a LiFePo4 battery?
 
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