0.9kw Lithium-Ion Battery $195 (48v 19.2ah 921w 60A 13s6p lg18650-mh1 3200mAh cells) New, never used.

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SolarSolutions

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Jan 14, 2020
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Full description:

Condition: New, never used
Manufacturer: SCUD
Enclosure and protection: Hard industrial plastic, scratch and impact resistant. Honeycomb cell holders and anti-vibration silicone between cells to reduce damage overtime. Water resistant silicone insulation. Metal screws holding together the cell holders and hard plastic shell)
Length : 9.87 inches ( 9 and 14/16 or 25.08 cm)
Height: 5.62 inches ( 5 and 10/16 or 14.28 cm)
Width: 2.81 inches ( 2 13/16 or 7.13 cm)
Weight: 8.7lbs
Voltage: 48v
Capacity: 19.2aH
BMS: 60a (Low Voltage/Overcharge/Temperature/Current output and Short Circuit protection, power equalization output)
Discharge rate: 60 amps continuous 90 peak (920w continuous or 1500w peak)
Max Charge rate: 2.5a
Limited Charging Voltage: 54.6V
Charging time: 5-6 hours
Cycle life: ~500 full charge and discharge cycles (worst case scenario. Light use will increase cycle life up to ~800 cycles)
Configuration: 13 series 6 parallel
Cell type: lg-18650-mh1 3200mah
Amount of cells: 78
Chemistry: Lithium - Ion
Connectors: xt60 + 2 pin for battery meter

Does not come with a charger
 

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Last edited:

J_Mack58

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Apr 7, 2021
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54.6 volts/13 = 4.2 volts. So you have to charge it to 100% state of charge to get the 19.2 ah? I like my 48 volt batteries at 14S so to get that same 54.6 volts you only charge to 3.9 volts. Six more cells and you have a much better product.
 

SolarSolutions

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Jan 14, 2020
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Thats a complete lie.
LG Themself claim 500 cycles till 70% capacity, the cycle life is usually till 80% so it holds up even less cycles
Um, what you are saying can be said about lead acid batteries, 4-500 full cycles and then a drop to 70%, li-ion does not behave like that and especially modern cells. I don't know where you got that info from and would gladly read up on it, because I got my specifications from their official data sheets and nowhere does it say 500 cycles to 70% capacity.
Nowhere.
Please provide source.
 

SolarSolutions

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Jan 14, 2020
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54.6 volts/13 = 4.2 volts. So you have to charge it to 100% state of charge to get the 19.2 ah? I like my 48 volt batteries at 14S so to get that same 54.6 volts you only charge to 3.9 volts. Six more cells and you have a much better product.
Yeah, that's the maximum capacity.
If you like your 48v batteries at 14s then it means that you like 52v batteries not 48v.
48v batteries are classified by their series number and 13s is equivalent to 48v. 14s is a different battery category which is 52v. 13s and 14s cannot be in the same category, at least for convenience sake.

It's a great product for certain projects, not so great for others just like any, it's like saying 48v batteries are much better than 36v batteries and 36v batteries are much better than 24v batteries.
All have a purpose and use for certain applications. By that logic, the "best" product on the market is the tesla battery module at 450vdc.
 

SolarSolutions

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Jan 14, 2020
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I kinda don't understand the hostility, questions are welcomed but straight up trashing my products without intent to buy or provide feedback is just weird. What's the point.
 

Korishan

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Jan 7, 2017
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6,573
Generally speaking, 48V is 14s because you don't want to run your cells at 4.2V all the time. This gives you low cycle count. By just dropping to 4.1V, this can add 100's of cycles to the life span. Dropping to 4.0V can drastically increase life cycle count into the 1000's (of new cells, of course).

The other thing to note is that capacity between 4.1V to 4.2V is very little. Even from 4.0V to 4.2V is small. There's not a whole lot of advantage of going to 4.2V, to be perfectly honest.

Another to note is that a 48V system is based off of a 12V Lead Acid configuration. A Lead Acid battery is "not" 12V, either. That's the middle voltage, not even really nominal.
Low voltage on LA batteries is usually 11.1V, some are rated as low as 10.8 (though, this is really really low). So 4x 11.1V = 44.4V.
Upper voltage on LA batteries is 13.5V, and usually float to around 14-14.5V. So 4x 14 = 56

This would make the "nominal" voltage of a "48V lead acid" system be 52V. Not 48V.

So this means that a 14s lithium ion configuration would be in the range of 3.2 - 4.0, or 44.8 - 56V with a nominal voltage of 3.8, or 53.2V.

As far as the claims to your 500 cycles, or claims against it, it would be best to just post where you got the information from that states/confirms what you are claiming. Regardless of what others claim.

it's like saying 48v batteries are much better than 36v batteries and 36v batteries are much better than 24v batteries.
I would have to disagree with this statement, because of the reasons earlier in this post. Also, 36V is no where near the same voltage range and/or energy capable as 48V batteries. They aren't even really in the same class.
 

SolarSolutions

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1. That review is not made by the company itself but by some random korean dude.

2. It's a review was made in 2014. Almost 8 years ago. These cells are from 2019.

3. No indication on how the tests were performed, their technologies or equipment.

4. Just read how the sentences are formed, the language they use. Would you trust a review that misspells every other word?

5. 500 cycles to 70% is unheard of anywhere in the high end 18650 cell categories, and these cells are high end. Maybe 500 cycles back to back with no pauses in between with a high drain application, but otherwise 500 is a very low estimate. I tested batteries after 700 cycles that were at 87-90% capacity, after fair use.

And it's pointless to discuss if one more cell would create a better product, I am not the maker of this battery I just got a good deal on those and sharing it with the community. You don't go to other people's posts and say naaaah this 200 watt panel that you're selling would be a lot better if it was 320 watt. Like, yeah, I get it it would be better if you'd modify it to your current needs but it's not, it's a made product and shitting on it with if's and then's is pointless. Maybe you're trying to bring the price down? I don't understand. I've seen this kinda behavior on some other forums for some reason, people who won't buy anything just tearing the ad apart with their "expertise".
 

Korishan

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The biggest issue here is that in the original post you stated 800+ cycles on full charge/discharge. This is the part that is inaccurate. I just did a search for LG MH1 datasheet, and every one that I looked at states the 500 cycle life.
If you have one that states 800+, please share the link.

Also, that "random Korean dude" is the guy who works/worked for LG at the time. And the other guy, he's the Vice President of LG Chem
1633076250322.png

Quote taken from: https://www.lgcorp.com/media/release/22111
"This ceremony was attended by LG Chem Automobile Energy Solutions Vice President Dong Myung Kim, GS Caltex Strategic Planning Office Executive Director Jung Soo Kim, Signet EV CEO Chul Ho Hwang, Soft Berry CEO Yong Hee Park, KST Mobility CEO Haeng Yeol Lee, and Green Car CEO Sang Won Kim, as well as other industry figures"

And the strange language is because the document was probably originally written in Korean and then translated into English. Or they used an automated translation service. We still see this problem even today with Googles advanced translation services. It's not fool proof.
 

SolarSolutions

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Jan 14, 2020
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Their estimated cycle life is for cells that are being fully charged and discharged at near maximum currents, not the typical usage of said batteries. Especially not this one where the load is being shared by many parallels.

Aka 500 cycles in the worst case scenario. It is well known that limiting the charge and discharge voltage of the battery increases the cycle life enormously, as you stated yourself with your suggestion that I add another cell to the series.

If you want to be that pedantic then sure, I'll edit the original listing.
 

J_Mack58

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Apr 7, 2021
Messages
92
I kinda don't understand the hostility, questions are welcomed but straight up trashing my products without intent to buy or provide feedback is just weird. What's the point.
This group take cells and build batteries. We test cells with a tight window for performance. Rated battery capacity verses what is measured using the best measuring devices we can get our hands on. We trash the inconsistent, incorrect and unreliable measuring devices too. There are e-Bike people here and your product MAY be suited for them but for the people building powerwalls to power their homes we all know that the inverter to convert the 48 volts DC to 120/220 VAC will have no problem with 55 volts DC. To get 55 volts with all cells balanced that would be 3.93 volts/cell. We try to stay away from the 100% charge to extend cycle life. We running our homes off these batteries charging with solar all day and living through the night on Lithium. We would like to do this as long as we can without having to change cells. 14S is proven for 48 volts. My home runs on a 14S80P and there are many here with larger batteries that will swear by 14S. Now with LiFePO4 I have to do 16S. We know what we know here through experience. You say 800+ cycles and If I only get 500 cycles. Then that's 300 days I hope to have power but don't. Much more serious then a kid can't ride his e_bike today. Maybe you advertising your product in the wrong spot.
 

Oberfail

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Jun 22, 2021
Messages
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Their estimated cycle life is for cells that are being fully charged and discharged at near maximum currents,
4.2.3 "Cells shall be charged and discharged per 4.1.3"
4.1.3 "Fast Charge / discharge condition"
charged at constant current of 0.5C to 4.20V
discharged at constant current of 0.5C to 2.50V

Thats nowhere near its 1C charge and 10A discharge limits by specification.

Maybe you're trying to bring the price down? I don't understand. I've seen this kinda behavior on some other forums for some reason, people who won't buy anything just tearing the ad apart with their "expertise".
You're promoting a product thats more expensive than building it yourself, with a BMS with no changeable settings in a DIY community forum. Don't get me wrong, I defenitly like that you give as much information about your product, as possible. For example the cell type and cell configuration. Thats something just a few people do.

I only pointed out the 2 flaws i see in the product you're advertising.
 
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