LIFEPO4 Battery discussion thread

cavedog said:
Battery 2 is not improving... :X3:

View attachment 1911358
Click to expand...

Managed to get Bat 2 down to about 120mV deviation. That is after 1 hour of discharging and charging individual cells. Its sitting at 56.4v now but the bms is not balancing 🤷‍♂️ :cautious:

I'm so done with PaceBMS honestly.
 

Attachments

  • 20260602_165000 (1).jpg
    20260602_165000 (1).jpg
    313.6 KB · Views: 11
cavedog said:
Managed to get Bat 2 down to about 120mV deviation. That is after 1 hour of discharging and charging individual cells. Its sitting at 56.4v now but the bms is not balancing 🤷‍♂️ :cautious:

I'm so done with PaceBMS honestly.
Click to expand...
good enough at 56.4v you will never run it close it that now you can let it just keep it like that
 
cavedog said:
Managed to get Bat 2 down to about 120mV deviation. That is after 1 hour of discharging and charging individual cells. Its sitting at 56.4v now but the bms is not balancing 🤷‍♂️ :cautious:

I'm so done with PaceBMS honestly.
Click to expand...
How did bat 1 pacebms manage to balance itself?
Why you voiding bat 2 warranty by opening it? Wasnt that the reason for buying the powersupply? Its reaching 56V already. You have years for it to balance itself like bat 1 did. Why you using powersupply to charge 5A @ cell voltage and not 5A at 58V and use lightbulb to bleed peaking cells?
I thought you were supposed to be doing bat 3 as that only gets to 54V using the strategy I layed out yesterday?
 
wingnut771 said:
How did bat 1 pacebms manage to balance itself?
Why you voiding bat 2 warranty by opening it? Wasnt that the reason for buying the powersupply? Its reaching 56V already. You have years for it to balance itself like bat 1 did. Why you using powersupply to charge 5A @ cell voltage and not 5A at 58V and use lightbulb to bleed peaking cells?
I thought you were supposed to be doing bat 3 as that only gets to 54V using the strategy I layed out yesterday?
Click to expand...

The warranty was never really going to mean much anyways unless I get an installer to do it for me and give me a new coc and even then the dates won't match so yeah. It is what it is.
 
cavedog said:
The warranty was never really going to mean much anyways unless I get an installer to do it for me and give me a new coc and even then the dates won't match so yeah. It is what it is.
Click to expand...
did it have a do not open sticker?
 
DTBA said:
did it have a do not open sticker?
Click to expand...
They want to see that the battery was installed by qualified electrician and COC issues before accepting returns for warranty. Most places like Solar warehouse operate like that. You may get lucky going straight to the manufacturer.

My whole solar install has no warranty. I voided it the moment I did DIY. I think only my Geyser controller as I did most of that with the help of the guys that side. Very helpful. They knew I was an Engineer, but it matters nothing as I am not a qualified installer. But i do think if I message them, they will assist based on my experience with them.
 
denmendez65 said:
They want to see that the battery was installed by qualified electrician and COC issues before accepting returns for warranty. Most places like Solar warehouse operate like that. You may get lucky going straight to the manufacturer.

My whole solar install has no warranty. I voided it the moment I did DIY. I think only my Geyser controller as I did most of that with the help of the guys that side. Very helpful. They knew I was an Engineer, but it matters nothing as I am not a qualified installer. But i do think if I message them, they will assist based on my experience with them.
Click to expand...
I personally am a buy and replace and don't care about warranty. I am off grid. So, every time an inverter packs up I must call my installer, go through the whole process of warranty which can take weeks. All the while sitting without power?

Warranty isn't worth the paper printed on for someone like me. Better off being like the Andy guy Wingnut follows or the Old Jarhead I follow on YT. DIY, take the sole responsibility for any mess-up you make.

My inverter was also 3.3k. I can replace that every 6 months if needed. Not worth the hassle fighting warranty and using installers for this. Maybe a 30k inverter i would consider getting an installer.
 
denmendez65 said:
They want to see that the battery was installed by qualified electrician and COC issues before accepting returns for warranty. Most places like Solar warehouse operate like that. You may get lucky going straight to the manufacturer.

My whole solar install has no warranty. I voided it the moment I did DIY. I think only my Geyser controller as I did most of that with the help of the guys that side. Very helpful. They knew I was an Engineer, but it matters nothing as I am not a qualified installer. But i do think if I message them, they will assist based on my experience with them.
Click to expand...
I was just wondering places like makro etc? same?
 
DTBA said:
I was just wondering places like makro etc? same?
Click to expand...
Looks like the offer a 6 month warranty. After that you are at the mercy of the manufacturer. Its 50/50 it looks like. My Omnivolt from builders has a 6 month warranty from builders ONLY if i used an installer.

Screenshot 2026-06-02 202842.png
 
denmendez65 said:
I personally am a buy and replace and don't care about warranty. I am off grid. So, every time an inverter packs up I must call my installer, go through the whole process of warranty which can take weeks. All the while sitting without power?

Warranty isn't worth the paper printed on for someone like me. Better off being like the Andy guy Wingnut follows or the Old Jarhead I follow on YT. DIY, take the sole responsibility for any mess-up you make.

My inverter was also 3.3k. I can replace that every 6 months if needed. Not worth the hassle fighting warranty and using installers for this. Maybe a 30k inverter i would consider getting an installer.
Click to expand...
What if you paid R80k like sunsynk 16kWh was a couple of years ago?
 
wingnut771 said:
What if you paid R80k for your battery?
Click to expand...
That's why I said the 30k part about the inverter. If paying that much I would consider it. Battery, not possible. I would be doing DIY LFP. The local guys actually offer warranties on the cells. So, if one packs up i just get it replaced.

You won't find me buying a Freedom Won battery. Even if I was a millionaire or something in dollars. DIY batteries, Cheap inverters for 15k under. That's how I roll 🤣. More fun anyway.

My price playground is here lol.

Screenshot 2026-06-02 203757.png
 
denmendez65 said:
That's why I said the 30k part about the inverter. If paying that much I would consider it. Battery, not possible. I would be doing DIY LFP. The local guys actually offer warranties on the cells. So, if one packs up i just get it replaced.

You won't find me buying a Freedom Won battery. Even if I was a millionaire or something in dollars. DIY batteries, Cheap inverters for 15k under. That's how I roll 🤣. More fun anyway.

My price playground is here lol.

View attachment 1912390
Click to expand...
I just buy the cheapest battery for around 8-9k call it day. If the bms kaks Ill slap a jk in

To much BS rules

I will do it safe.
 
denmendez65 said:
That's why I said the 30k part about the inverter. If paying that much I would consider it. Battery, not possible. I would be doing DIY LFP. The local guys actually offer warranties on the cells. So, if one packs up i just get it replaced.

You won't find me buying a Freedom Won battery. Even if I was a millionaire or something in dollars. DIY batteries, Cheap inverters for 15k under. That's how I roll 🤣. More fun anyway.

My price playground is here lol.

View attachment 1912390
Click to expand...
1780425893340.png
Seems like a bargain to me
 
You must log in or register to reply here.
Back
Top
Sign up to the MyBroadband newsletter
X