15 minutes ago, Tinbum said:

 

LV hub US3000C.pdf 260.63 kB · 0 downloads

This is very useful, thank you. In this sequentual setup, will it be possible to swich off some groups or slaves in one group without affecting other groups, to balance individual batteries on cell level? I am asking this because i prefer to rum max. charge voltage below 52V, to save battery life, but it seems to cause internal imbalances.

6 minutes ago, ET.1 said:

This is very useful, thank you. In this sequentual setup, will it be possible to swich off some groups or slaves in one group without affecting other groups, to balance individual batteries on cell level? I am asking this because i prefer to rum max. charge voltage below 52V, to save battery life, but it seems to cause internal imbalances.

I think 52v is too low and hence your problems. Pylontech say 52.5v to 53.2v. Run them as the manufacture recommends, as if you have a fault, they won't be interested and  they will put it down to user error.

On 2021/10/20 at 5:58 AM, SYC said:

Being an installer I have 1x us2000 2x us3000 1x us3000C and 2x UP5000 all in one bank working fine see pic below

From the pylontech manual verbatum:

15) Compatible with the US3000C, US2000C, US3000, and US2000.
*Mixture using master battery priority:
UP5000>US3000C>US2000C>US3000>US2000
For same type of module always use the latest production unit as master.
*Mixture using battery deployment option:
Master battery (1st) UP5000
Slave 2nd ~8th UP5000/US3000C/US2000C/US3000/US2000
Slave 9th ~16th UP5000/US3000C/US2000C

Please take note of order of batteries above if and when stacking.

They all are 15 cells i'm pretty sure

Only down site is the you need to limit your draw to the smallest battery in your bank

Mine the max I can draw is 1.9kw continuously because of US2000 (FYI lithium batteries work well between 95%-35%)

1st ALL Batteries "HAVE TO BE Balanced" or else you will get an alarm on batteries

Inverter MUST communicate with Master batteries BMS

 

 

 

On 2021/10/20 at 5:58 AM, SYC said:

Being an installer I have 1x us2000 2x us3000 1x us3000C and 2x UP5000 all in one bank working fine see pic below

From the pylontech manual verbatum:

15) Compatible with the US3000C, US2000C, US3000, and US2000.
*Mixture using master battery priority:
UP5000>US3000C>US2000C>US3000>US2000
For same type of module always use the latest production unit as master.
*Mixture using battery deployment option:
Master battery (1st) UP5000
Slave 2nd ~8th UP5000/US3000C/US2000C/US3000/US2000
Slave 9th ~16th UP5000/US3000C/US2000C

Please take note of order of batteries above if and when stacking.

They all are 15 cells i'm pretty sure

Only down site is the you need to limit your draw to the smallest battery in your bank

Mine the max I can draw is 1.9kw continuously because of US2000 (FYI lithium batteries work well between 95%-35%)

1st ALL Batteries "HAVE TO BE Balanced" or else you will get an alarm on batteries

Inverter MUST communicate with Master batteries BMS

 

 

 

On 2021/10/20 at 5:58 AM, SYC said:

Being an installer I have 1x us2000 2x us3000 1x us3000C and 2x UP5000 all in one bank working fine see pic below

From the pylontech manual verbatum:

15) Compatible with the US3000C, US2000C, US3000, and US2000.
*Mixture using master battery priority:
UP5000>US3000C>US2000C>US3000>US2000
For same type of module always use the latest production unit as master.
*Mixture using battery deployment option:
Master battery (1st) UP5000
Slave 2nd ~8th UP5000/US3000C/US2000C/US3000/US2000
Slave 9th ~16th UP5000/US3000C/US2000C

Please take note of order of batteries above if and when stacking.

They all are 15 cells i'm pretty sure

Only down site is the you need to limit your draw to the smallest battery in your bank

Mine the max I can draw is 1.9kw continuously because of US2000 (FYI lithium batteries work well between 95%-35%)

1st ALL Batteries "HAVE TO BE Balanced" or else you will get an alarm on batteries

Inverter MUST communicate with Master batteries BMS

 

 

Hi, what’s the maximum hunger of UP5000 batteries you can connect without a LV Hub. I’ve got 5, my installer says the maximum i can connect without a LV Hub is 4. I see you’ve connected about 6 batteries.

please advise on how you did your installation. 

thanks 

3 minutes ago, MahanoMahano said:

 

Hi, what’s the maximum hunger of UP5000 batteries you can connect without a LV Hub. I’ve got 5, my installer says the maximum i can connect without a LV Hub is 4. I see you’ve connected about 6 batteries.

please advise on how you did your installation. 

thanks 

No, older batteries were 8, newer US 'C' type are 16. It's all in the manuals.

On 2023/01/31 at 12:16 PM, MahanoMahano said:

what’s the maximum hunger of UP5000 batteries

 Hi, 16 and when you reach 4, it must have 2 cable packs on every set of 4 going to a common  dc bus bar that must match the discharge/charge amperage

Edited February 1, 20233 yr by SYC

This looks like the correct thread to add my issue to. I too also have mixed Pylontech's in a single group but having issues when I recently added 2 more batteries to my existing pack of 8. 

I may have stumbled across a new issue. I had eight(batteries 3 - 10) in the pack but recently I have added two more batteries to my bank, totaling 10 modules now. Battery 1 and 2 are the latest additions. Below is a pic of them. Numbered from newest to oldest.

 

Batteries 1 - 5 are the US3000C running the newer chipset and all have v1.8 firmware loaded. Battery 6 is a US3000C running the older chipset with v2.8 firmware. Battery 7 is a US2000C running v2.8 firmware. Batteries 8-10 are the US2000B's running v3.4 firmware. 

The manual always says that your newest battery should be the master which is how I have configured it but when you start the master(1) battery up(SW), it starts up each battery but when battery 9 is reached, it seems the BMS is not capable of dealing with more than 8 batteries in a single group even though the manual says that the C model battery can handle 16 batteries in a single group. All LED's on Battery 1 - 9 flashes and it attempts to restart each battery again. Battery 10 does not even start up. Unfortunately the battery pack does not start up and I can't even connect using BatteryView. 

I attempted to use Battery 6 as the master as it's using the older chipset, slaves starting then from 1 - 5 and continuing with 7 - 10. The same issue when reaching battery 9 as my previous point. 

I also then tried using Battery 6 again as the master but the order of the slaves are starting from 7 - 10 and continuing with 1 - 5. This seemed to have worked but can't connect to BatteryView for some reason still. Also this goes against having the newest battery higher up in the pack. At the moment I have disconnected Battery 1 and 2 like I had before so that I can continue to use my pack.

This seems to be a firmware issue as I have double checked cabling and all is in order there. I even tried running Batteries 1 - 8 and there were no issues starting them up. This makes me believe that the firmware on the newer chipsets of the US3000C does not accommodate more than 8 batteries in a single group. 

I have emailed Pylontech and awaiting their response. Has anyone else experienced a similar issue?

 

 

 

Isn't there a max number of batteries in a tower for pylon before you need to use some comms hub? You might need to split the tower into 2 banks of 5 

But let's hears what the pylon experienced users say 

1 hour ago, PurePower said:

This looks like the correct thread to add my issue to. I too also have mixed Pylontech's in a single group but having issues when I recently added 2 more batteries to my existing pack of 8. 

I may have stumbled across a new issue. I had eight(batteries 3 - 10) in the pack but recently I have added two more batteries to my bank, totaling 10 modules now. Battery 1 and 2 are the latest additions. Below is a pic of them. Numbered from newest to oldest.

 

Batteries 1 - 5 are the US3000C running the newer chipset and all have v1.8 firmware loaded. Battery 6 is a US3000C running the older chipset with v2.8 firmware. Battery 7 is a US2000C running v2.8 firmware. Batteries 8-10 are the US2000B's running v3.4 firmware. 

The manual always says that your newest battery should be the master which is how I have configured it but when you start the master(1) battery up(SW), it starts up each battery but when battery 9 is reached, it seems the BMS is not capable of dealing with more than 8 batteries in a single group even though the manual says that the C model battery can handle 16 batteries in a single group. All LED's on Battery 1 - 9 flashes and it attempts to restart each battery again. Battery 10 does not even start up. Unfortunately the battery pack does not start up and I can't even connect using BatteryView. 

I attempted to use Battery 6 as the master as it's using the older chipset, slaves starting then from 1 - 5 and continuing with 7 - 10. The same issue when reaching battery 9 as my previous point. 

I also then tried using Battery 6 again as the master but the order of the slaves are starting from 7 - 10 and continuing with 1 - 5. This seemed to have worked but can't connect to BatteryView for some reason still. Also this goes against having the newest battery higher up in the pack. At the moment I have disconnected Battery 1 and 2 like I had before so that I can continue to use my pack.

This seems to be a firmware issue as I have double checked cabling and all is in order there. I even tried running Batteries 1 - 8 and there were no issues starting them up. This makes me believe that the firmware on the newer chipsets of the US3000C does not accommodate more than 8 batteries in a single group. 

I have emailed Pylontech and awaiting their response. Has anyone else experienced a similar issue?

 

You have the batteries in the wrong order. Look in the manual for where the us2000b's should go.

Edited April 24, 20233 yr by Tinbum

48 minutes ago, mzezman said:

Isn't there a max number of batteries in a tower for pylon before you need to use some comms hub? You might need to split the tower into 2 banks of 5 

But let's hears what the pylon experienced users say 

Yes, 16 with the C types (including the new US5000). The batteries are in the wrong order in the case above.

Batteries 8, 9 & 10 are the US2000B models and are at end of the pack...but after reading the manual again... you may be onto something. 

The below is from a US3000C manual:

@Tinbum, you reckon if I shift the US2000B's into position 6, 7, & 8 then i should be good to go?

Basically invert the order of batteries in the left cabinet and make the US3000C battery 9 and the US2000C battery 10... 

This actually makes sense now as the US2000B's only ever accommodated 8 in a single group... 

Lemme try this. 

PS: Note to self, don't commission new batteries into a pack at midnight! 

Edited April 24, 20233 yr by PurePower

Yes, old batteries have to go in 2 to 8.

3 hours ago, Tinbum said:

Yes, old batteries have to go in 2 to 8.

Thank you @Tinbum, your guidance has worked. 

On 2021/10/12 at 5:01 PM, Jazzy said:

Guys merely asking can we mix pylontech Us3000b with UP 5000s?

Merely asking...

Sorry guys was busy with lots of stuff... So it works, I did come up with a battery alarm fault, quick fix, I merely dropped my volts from say 53.3 to 52.9, and it did not have an issue since then, running 3000 x4, 3000c x1 and UP5000....so it works and thank you all for your input, greatly appreciated...always make certain the new battery is the "MASTER"

To revive an old Threat, Just wanted to find out everyone's opinion...

I currently have 4 Pylontech batteries. 2 UP5000's and 2 Us2000C's.

should I have another Battery cable going from the Batteries to the Inverter or is the single Positive and Negative cables enough?

Also if the above is fine, if another UP5000 or US3000C or Even 2000C will be added should I then add another pair of battery cables to the inverter?

Any advise would be appreciated...

It will depend on the size of your inverter but it is always better to double up on the cables.

13 minutes ago, Jacques Ester said:

It will depend on the size of your inverter but it is always better to double up on the cables.

Thanks, I have an 8KW inverter.

If it is always better, maybe I should just go ahead and do it :)

For an 8kw inverter it is a must.

That is what I am running.

3x us3000

2 x up5000

8kw Sunsynk

Edited November 13, 2025Nov 13 by Jacques Ester

3 hours ago, Jacques Ester said:

For an 8kw inverter it is a must.

That is what I am running.

3x us3000

2 x up5000

8kw Sunsynk

Thanks!

How is the 2nd cabled wired? to a bus bar or directly from batteries?

Do you perhaps have a photo to share?

Cable from top batt Positive and negative.

Bottom battery Positive and negative.

Both Positive connected to Fuse Isolator and both negative to fuse isolator

2 hours ago, Jacques Ester said:

Cable from top batt Positive and negative.

Bottom battery Positive and negative.

Both Positive connected to Fuse Isolator and both negative to fuse isolator

Thank you!

Really appreciate it!