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CYCCLEVOLT 48V 100AH - Currently $900 on Amazon with free shipping

Received today.
Have not had time to tinker to much. Just threw it on the charger. It did arrive pretty quickly.


View attachment 256210View attachment 256212
I hate to disappoint you but:

Your battery did not come equipped with the latest and greatest new technology in server rack batteries, a Bent Ear or Bent Handle. You definitely got more value for your money than I did, unfortunately you do not belong to the "Bent Ear Club"
 
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You’ll be fine. Since the batteries are in parallel, each batteries BMS will handle the SOC of that battery. When fully charged it’s charging FET turns off. The remaining batteries do the same. In the end they’re balanced. Comms is just a way of reporting what’s going on.
Now how the inverter handles a 300A-hr battery bank with only 200A-hr being on Comm, could be an issue. Doubtful it would be a problem, but don’t know. Depends on the inverter.
 
Cell balancing within each battery is handled by that batteries BMS. It may or may not get reported through Comms, though an error faulty likely would.
 
When charging a battery.
If the battery has a "runner" cell, that is a cell (or cells) that charge to the Cell Over Voltage Protection (COVP) setpoint before other cells have charged to at least the cell balance voltage the BMS will stop further charging by opening/turning off the Charging MOSFETS.

If a number of cells have not been charged to the cell balance voltage setpoint before the COVP and the BMS has begun to balance cells then the battery will not be fully charged and the BMS will most likely not reset SOC to 100%. This varies from BMS to BMS.

A battery can be assumed to be fully charged when the BMS is given a chance to start the cell balancing process. Even at this point the battery is not fully charged. You should try to get as many cells charged to 3.50 to 3.55 as you can. You may have to adjust the charge voltage to prevent a COVP to give the battery an opportunity to balance cells without tripping a COVP.

The battery will most likely not be fully charged just because the BMS stops the charge due to a protection fault unless the BMS started to balance a number of then cells.
 
Agreed. I’ve had good success keeping the balancing function active for longer by limiting the maximum charge current to the multi cell battery to around 2x the passive balancing current.
This allows the first cell to reach 3.5 volts to be bypassing 1/2 the charging current thus slowing it down considerably. Meanwhile the remaining cell are getting 100% of the charging current. It sometimes takes a few (very long) cycles to get things back together.
 
Hopefully you’ll be willing to report back with with an evaluation of this battery (pretty please)?

And yes, it looks like Amazon is the best place to buy right now at $899 after coupon. They do have multiple listings on eBay and it looks like they’re testing different price points and playing games with shipping prices as well. All of eBay combinations of price + shipping end up being higher than Amazon’s price.

I offered to purchase at the lower eBay price but with local pickup to avoid the shipping fee and they declined. So they’re offering them as low as $746 on eBay and making up for it by boosting the shipping fees.

Too bad. I'm about 40 miles from El Monte, CA.
 
The CyccleVolt (note the extra "c") is not a bad battery. It is as far as I can tell a direct replacement for the SunGoldPower SG48100P.

I have six SG48100P and I connected the battery to battery jack of my one CyccleVolt to the bottom SG48100P (the SG48100P are address 1 thru 6). Set the CyccleVolt to address 7 and the SG48100P Master (address 1) picked up the new battery and the Inverter showed the additional 100ah capacity (700ah total). Solar Assistant also displays this battery. It has a PACE BMS. I have had no issues with the six SG48100P batteries.

The CyccleVolt is not as well built as the SG48100P but then again it will sit in a rack so I am not sure quality of build is that important. Just don't know how many years I will get out of it.

You may find the SOKTools.exe software downloadable from the Current Connected website to be useful. This software runs on a windows computer. Connect the RS232 to USB cable (provided with the battery) to the RS232 (small RJ12 jack) on the battery.

The software will display all the pack and Cell information as well as all fault/alarm/protection data and all alarm and protection setpoints.

Download at (use the SOK Tools 2023+ version (Includes monitoring and protocol edit) at the bottom of the page:

 
How is the CyccleVolt, C3V, working out?
Much better than the ECO-Worthy. Works as I expected. Communications to the Inverter is independent from communications to the battery (Solar Assistant or software) which is independent of the battery to battery communications. Three simultaneous and independent communications ports., plus the LCD screen. The way a BMS should work.
The PACE and Pylontech protocols although not completely documented are at least enough to be able to develop software.
I have seen no issues with this battery when connected to the RS232 port, works like a champ.
I like the fact that I can add this battery to my SunGoldPower battery stack and it works with the existing SGP batteries.
 
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Much better than the ECO-Worthy. Works as I expected. Communications to the Inverter is independent from communications to the battery (Solar Assistant or software) which is independent of the battery to battery communications. Three simultaneous and independent communications ports., plus the LCD screen. The way a BMS should work.
The PACE and Pylontech protocols although not completely documented are at least enough to be able to develop software.
SO has no issues with this battery when connected to the RS232 port, works like a champ.
I like the fact that I can add this battery to my SunGoldPower battery stack and it works with the existing SGP batteries.
Everything sounds good. Any identification of the cells? I need one more battery.
 
Everything sounds good. Any identification of the cells? I need one more battery.
I can't get anything on the QR code. The alphanumeric characters do not form a normal LifePo4 Cell QR Code as recognized (or explained by) these websites:

 
does anyone mix/match Cyccle Volt packs with any other packs?
I have some cyccle voltage packs and need more...
 
@BarracudaBob Don't worry Bob, I have 3 that shipped today, will have in a week. You've taken several for the team, I plan to test these out. Couldn't pass up the price, made an offer on e-bay and got just about the Amazon price but no shipping fee.

:cool:
Sounds good. Charge and balance that thing up and put a shunt on it and bring it down to the depths of hell and see what you got out of it. I wonder if the BMS has the ability to learn from top and bottom values. Many are set for 80% DOD so what happens wen you set that value to 100% but still allow the cell under voltage to take it off line.

Since my last test and Will's 2nd video I would love to do a cell only vs with BMS capacity test.

Things have picked up at work so don't have as much time right now. New budget and projects. Time to make that gold pressed latinum :)
 
Sounds good. Charge and balance that thing up and put a shunt on it and bring it down to the depths of hell and see what you got out of it. I wonder if the BMS has the ability to learn from top and bottom values. Many are set for 80% DOD so what happens wen you set that value to 100% but still allow the cell under voltage to take it off line.

Since my last test and Will's 2nd video I would love to do a cell only vs with BMS capacity test.

Things have picked up at work so don't have as much time right now. New budget and projects. Time to make that gold pressed latinum :)
I don't know what rule of acquisition it is to 'let others help capacity test lifepo4', but perhaps that leads to the savings in latinum.
 
Not a bad looking battery. At least they have the positive and negative battery posts on the correct sides of the battery, unlike the ECO-Worthless battery that has the posts on the opposite sides.
Ouch! That hurts my widdle feewings! :ROFLMAO: 17 times!
 
I can't get anything on the QR code. The alphanumeric characters do not form a normal LifePo4 Cell QR Code as recognized (or explained by) these websites:

One of those links included a link to a member which haven't been on the site in a few years: Tim Lee Energy Panda....gleaned this form his site:

Sorry Energie panda
Screenshot 2025-02-06 12.55.05 PM.png
 
The code from the photo here: https://diysolarforum.com/threads/another-799-server-rack-battery-on-amazon-cycclevolt.99153/
is: 08MCBS0124E02AE5B0006792
That is the right format and length, but the 08M manufacturer is unknown.
No dice... kinda sketchy
 
The code from the photo here: https://diysolarforum.com/threads/another-799-server-rack-battery-on-amazon-cycclevolt.99153/
is: 08MCBS0124E02AE5B0006792
That is the right format and length, but the 08M manufacturer is unknown.
No dice... kinda sketchy
I'm looking, I've found some evidence that 08M is CALB. Will post a link if I think it's authoritative. So far, AI has only been able to dig that up for me.
 
After reviewing many pics of the tops of cells, there are consistencies that divulge manufacturer without needing the QR code. Armed with just the manufacturer, it's easier to identify the cell model by researching the website for other parameters (AH, size, etc.). I would post ANY clues, not just authoritative..additional evidence is helpful. Never enough data!
 

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