Victron energy Pylontech US2000C User manual

2022-03-05 21:27 1/14 Victron & Pylontech UP2500, US2000, US3000, US2000C, US3000C, UP5000, Phantom-S, Force-L1 & L2
Victron Energy - https://www.victronenergy.com/live/
Victron & Pylontech UP2500, US2000,
US3000, US2000C, US3000C, UP5000,
Phantom-S, Force-L1 & L2
The combination of Victron products with Pylontech lithium batteries has been tested and certified by
the Victron and Pylontech R&D departments.
General information about the battery is found in Pylontech's documentation.
This manual is intended to be used in conjunction with the product manual supplied by Pylontech. It
provides additional and specific information regarding integration with Victron systems.
The Pylontech includes a Battery Management System (BMS) with each battery module. This
interfaces with the Victron GX device and can support multiple battery modules connected in parallel.
1. Product & system compatibility
Battery UP2500* US2000 (Plus/C) US3000(C) UP5000 Force-L1 & L2
Nominal voltage 24V 48V 48V 48V 48V
Module capacity 2.55 kWh 2.4 kWh 3.5 kWh 4.8 kwh 3.55 kWh
* Note that UP2500 came in two versions, UP2500NA01V00101 does not have a CANBUS port, and IS
NOT supported by Victron. UP2500NB01V00101 released April 2020 has the CANBUS port and IS
supported.
1.1 Offgrid, Backup and Energy Storage Systems are possible
Victron + Pylontech can be used for the following system types:
Off-grid (DVCC)
Grid Backup (DVCC or ESS)
Energy Storage Systems (ESS) - Self Consumption (ESS - Start page)

Last
update:
2021-04-19
11:00
battery_compatibility:pylontech_phantom https://www.victronenergy.com/live/battery_compatibility:pylontech_phantom?rev=1618822856
https://www.victronenergy.com/live/ Printed on 2022-03-05 21:27
1.2 A GX-device is required, eg Cerbo GX or Venus GX (VGX)
It is essential to use the CAN-bus connection of the GX device (e.g. Cerbo GX) - this communicates the
keep-alive signal, charge and discharge limits, error codes and state of charge (SOC %) between the
batteries and the system.
For new systems, the minimum required firmware version for the GX Device (e.g. Cerbo GX is v2.42. It
is highly recommended to use the latest firmware version on all connected devices, including the GX
device Inverter/Charger and MPPTs. There are regular updates to improve performance and reliability.
Legacy systems installed with v2.15 can continue to be used without upgrade as long as they do not
present any issues.
1.3 All Multi, MultiPlus, MultiGrid and Quattro are compatible
As long as you are using the appropriate model for the nominal battery voltage, all VE.Bus inverters
and inverter/chargers are compatible.
The minimum firmware version for new installations is 469. Though updating to the latest firmware is
recommended where possible, and a necessary first step when troubleshooting issues.
These inverter/charger units must be connected to the GX device via the VE.Bus connection port.
Legacy systems installed with VE.Bus firmware 422 can continue to be used without upgrade as long
as they do not present any issues.
1.4 All VE.Direct BlueSolar and SmartSolar MPPT Chargers are compatible
For proper operation, the Pylontech battery needs to be able to control the charge current. Therefor it
is recommended to use Victron 48V compatible MPPTs models with VE.Direct port for charging.
MPPTs with a VE.Direct port
MPPTs are controlled via the GX device. Make sure the GX device runs v2.15 or later, and the MPPTs
to 1.37 or the latest available version.
The MPPT requires connection to the GX device to regulate charge currents as the batteries require
(due to temperature, etc) To test operation, try disconnecting the GX device from the MPPT. After a
time-out, the MPPT will stop charging and flash an error code on its LEDs. The error code is error #67:
no BMS.
MPPTs with a VE.Can port
New Model (2019 and later) VE.Can MPPTs are also supported from firmware version 1.06 and above.
Be aware that some GX devices (e.g. CCGX) only have a single CANBus interface, and that is required
for the battery communications. So if you use a new VE.Can MPPT, it must also be with a GX device
that has more than one CANbus interface, e.g. the Cerbo GX.

2022-03-05 21:27 3/14 Victron & Pylontech UP2500, US2000, US3000, US2000C, US3000C, UP5000, Phantom-S, Force-L1 & L2
Victron Energy - https://www.victronenergy.com/live/
Old model VE.Can MPPTs (pre 2019) are not supported.
2. Minimum Battery Sizing Recommendations
Once DVCC is enabled on the GX device, the charge and discharge rates are managed by the
Pylontech battery.
Using very large solar arrays with battery banks that are too small can exceed the limits of the
batteries ability to charge and possibly lead to the BMS triggering over-current alarms.
You must have the minimum number of battery modules to supply the inverters startup inrush surge
currents that charge the capacitors when the inverter is first connected, this occurs prior to any loads
being connected. There is also the subsequent potential current demands of the loads connected to
the inverter. It is much more desirable to have the inverter/charger overload than the battery, as the
inverter will automatically recover, whereas the battery may require intervention once in a fault state.
Some suggested battery sizings for common Victron inverter/chargers are listed below. These are
suggestions for reliable operation for single phase off grid and are not specified by Pylontech.
Using the above formula, an example of minimum system sizing based on the US2000 battery module
is below. Each battery module is approximately 50Ah at 48V, can provide 25A continuous charge and
discharge and 100A peak for 1 minute.
Inverter / Charger Model
Inv
continuous
watts @ 25
degrees
Inverter
peak
watts
surge
rating
Number of
Pylontech
modules
Battery
continuous
discharge
watt rating
Battery
peak
discharge
watt rating
Multiplus 48/500/6 430 900 1 1200 4800
Multiplus 48/800/9 700 1600 1 1200 4800
Multiplus 48/1200/13 1000 2400 1 1200 4800
Multiplus 48/3000/35 2400 6000 2 2400 9600
Multiplus 48/5000/70 4000 10000 4 4800 19200
Quattro 48/8000/110-100/100 6500 16000 6 7200 28800
Quattro
48/10000/140-100/100 8000 20000 7 8400 33600
Quattro
48/15000/200-100/100 12000 25000 10 12000 48000
3. CAN-bus Wiring

Last
update:
2021-04-19
11:00
battery_compatibility:pylontech_phantom https://www.victronenergy.com/live/battery_compatibility:pylontech_phantom?rev=1618822856
https://www.victronenergy.com/live/ Printed on 2022-03-05 21:27
You can connect multiple battery modules together to form a single large battery by connecting the
RJ-45 cable supplied by Pylontech using the link ports on the battery. This is shown in more detail in
the example wiring diagram and Pylontech manual.
The communications for UP2500 can be paralleled up to 20 modules per string (and cannot use the
LV-HUB). Other models can connect up to 8 battery modules (see Pylontech data sheets), in those
models when using more than 8 parallel units, some limitations, additional configuration or equipment
(e.g. Pylontech LV-Hub) may apply. See your Pylontech dealer, and Pylontech documentation for more
details.
The batteries will automatically detect and link to each other, no adjustment of dip switches on the
battery module are necessary.
The battery with the empty link port 0 is the master battery. You must use the VE.Can to CAN-bus
BMS type B Cable, part number ASS030720018 for connection with US2000/US3000/UP2500; and
VE.Can to CAN-bus BMS type A Cable, part number ASS030710018 for connection with
US2000C/US3000C/UP5000/Force-L, you cannot use the cable supplied by Pylontech.
Plug the communication cable with the side which is labeled Battery BMS into the Pylontech CAN port
of the master battery.
Some GX devices (such as the Cerbo GX), have multiple CAN ports. If your GX device has a BMS-Can
port, this should be used. If your GX device ONLY has VE.Can ports, you will need to this for the
battery (and then it cannot be used for other VE.Can devices).
Plug the side labeled Victron VE.Can into the GX device.
Then, plug a VE.Can terminator in the other VE.Can socket on the GX device. Two VE.Can terminators

2022-03-05 21:27 5/14 Victron & Pylontech UP2500, US2000, US3000, US2000C, US3000C, UP5000, Phantom-S, Force-L1 & L2
Victron Energy - https://www.victronenergy.com/live/
are included with the package of the GX device as an accessory, only one is used. Keep the other one
as a spare.
More information about the cable can be found in its manual.
Without properly connecting this cable, the battery will not show up on the display of the GX device.
The battery will also turn itself off.
It is important to ensure this connection and display of the battery on the GX device display before
attempting firmware updates or settings changes on other devices if they depend on the power
supply from the battery. Without this connection, the battery may turn off unexpectedly.
4. GX Device Settings
On the GX device,
If your GX device has a BMS-Can port, the battery should be connected to this.
If you connect the BMS to the VE.Can port you will need to adjust the port speed. Select the
CAN-bus BMS (500 kbit/s) CAN-profile in the GX device. Menu path: Settings → Services →
VE.CAN port.
After properly wiring and setting the correct CAN-bus speed, the Pylontech will be visible as a battery
in the device list. If you have multiple batteries a single entry will show up, which represents all
batteries:
Next, go to Settings, DVCC, and configure as follows:
Venus Settings → System Setup Parameter Value
DVCC ON
Shared Voltage Sense OFF
Shared Temperature Sense OFF
For more information about the behaviour of DVCC, please see the GX device manual.
Note: The “Limit managed battery charge voltage” feature should be left OFF, unless you are
experiencing “High Voltage” or “Internal Error” alarms. These alarms can indicate that there is an
internal cell imbalance in the battery. It may be useful in this situation to enable this feature, and
then adjust the voltage limit down so that the batteries are able to balance charge without reaching

Last
update:
2021-04-19
11:00
battery_compatibility:pylontech_phantom https://www.victronenergy.com/live/battery_compatibility:pylontech_phantom?rev=1618822856
https://www.victronenergy.com/live/ Printed on 2022-03-05 21:27
over voltage internally. This imbalance is at a cell level, so might not be reflected as a high overall
battery voltage if measured with a Multimeter. This can then be turned off once the battery has
balanced itself properly.
The 'limit charge current' value that you set manually in the DVCC menu of the GX device will allow
you to set a value less than the ceiling Charge Current Limit (CCL) set by the BMS, if you want to
further restrict system wide charge current for some reason. You can enter a larger number than the
CCL, but the system will then stop at the CCL number (and not your manually entered figure).
For example if you only wired in 80A capacity wire / fuses through the system, and didn't want the
potential combined power delivery of a generator charging as well as a solar charge, you could limit
the total system charging (MPPT + MultiPlus) to that lower level, even though the batteries could
potentially absorb more.
The parameters option within the battery page shows the battery charge and discharge limits
as communicated to the DVCC system by the BMS.
The 'charge current limit' (CCL) as shown in the parameters screen (and received from the BMS, by
the GX device, via DVCC) will be the ceiling, and the system will try its best not to exceed that (as
much as it can - it may spike under momentary peaking conditions).
This parameters page is also a good place to check that all batteries are connected and working
properly. In see the individual battery data sheet for the normal working conditions, e.g. the current
limit per cell. For example, If each battery is rated to 25A charge current, and the menu shows a 75A
charge current limit ( 75 / 25 = 3 ) means there are 3 Pylontech battery modules connected.
Note that 'details' menu of the battery (e.g. Lowest and Highest cell voltages etc) is not currently
supported by Pylontech.
In off-grid systems, the inverter will prioritise running the load, and potentially exceed this Discharge
Current Limit. This could lead to the battery shutting down, and why it is important to follow the
minimum battery sizing guide.
In grid connected ESS systems, the inverter will do its best to respect the Discharge Current Limit and
use the grid to supplement the load if required.

2022-03-05 21:27 7/14 Victron & Pylontech UP2500, US2000, US3000, US2000C, US3000C, UP5000, Phantom-S, Force-L1 & L2
Victron Energy - https://www.victronenergy.com/live/
5. VEConfigure Settings
When using the latest firmware on all compatible connected devices, and once the battery module
has been detected by the GX device, battery charging parameters (e.g. Maximum Charge Current,
Target Battery Voltage, etc) are automatically configured by the Pylontech BMU, and communicated
to the rest of the Victron components in the system via DVCC.
It is possible to override some of these automatic settings to provide additional limitations (e.g.
reduce the total charge current that would be provided but the MultiPlus). The following information is
provided for that purpose, though is not required for the safe operation of the system.
This section presumes familiarity with VEConfigure software.
Voltages shown are for the 48V model, and should be scaled for the 24V model. The 24V model is an
8-series configuration while the 48V model is a 15-series configuration. Voltages should therefore be
scaled by 8/15.
5.1 General tab
Check the “Enable battery monitor” function
Set the battery capacity to the total capacity of the battery: eg 50Ah times the number of
battery modules for the US2000 model.
The other parameters (“State of charge when bulk finished” and “Charge efficiency”) can be left
to their default setting: They are ignored for a Pylontech installation.
5.2 Charge Settings
Charger tab
Parameter Setting
Battery type Lithium
Charge curve Fixed
Absorption voltage 52.0 V
Float voltage 51.0 V
Absorption time 1 Hr
Note: make sure to double check the float voltage after completing Assistants, and if necessary set it
back to 51.0 V.
Note For off-grid use: ignore the 'bms assistant required' warning.
5.3 Inverter Settings
In the Inverter tab of VEConfigure

Last
update:
2021-04-19
11:00
battery_compatibility:pylontech_phantom https://www.victronenergy.com/live/battery_compatibility:pylontech_phantom?rev=1618822856
https://www.victronenergy.com/live/ Printed on 2022-03-05 21:27
VEConfigure Inverter Parameter Setting
DC input low shut-down 44V
DC input low restart 48V
DC input low pre-alarm* 48V
* The pre-alarm setting is dependant on your preference and on site specific requirements. You may
wish for this to be activated earlier in an off grid situation to allow time to start a backup generator.
ESS System Settings
If you are using the battery as part of a grid connected ESS system, please review the ESS Quickstart
guide and Design and Installation Manual.
The settings that are specific to the Pylontech battery in the VEConfigure ESS Assistant are below:
Select the externally managed Lithium battery option
ESS Parameter Settings
Sustain voltage. 48V
Dynamic cut-off values set all values to 46V.
Restart offset: 1.2V (Default)
Due to the reliability of the grid supply and the behaviour of the sustain voltage threshold in ESS; you
may wish to suppress the low voltage pre-alarm warning so that it does not trigger every day on its
regular deep cycle. See ESS FAQ Q5 - about suppressing the low-voltage alarm.
Hardware Protection Points
In normal operation, the charge parameter limits are set by the Pylontech battery and communicated
through the system by the GX device to the inverter/charger and MPPT.

2022-03-05 21:27 9/14 Victron & Pylontech UP2500, US2000, US3000, US2000C, US3000C, UP5000, Phantom-S, Force-L1 & L2
Victron Energy - https://www.victronenergy.com/live/
Low Voltage: When the battery discharges to 44.5V or less, battery protection will turn on.
High Voltage: If charging voltage above 54V, battery protection will turn on.
Working discharge temperature range is from -10 to 50 degrees celsius.
Charging temperature range is from 0 to 50 degrees celsius.
Discharge Current Limit set to 0A at 47V, inverter will turn off.
Over-charge and Over-discharge Current Limit 102A for 15 seconds, 200A for 0.1 seconds and
400A short circuit current.
If operation is attempted outside the operating range, the battery will disconnect to protect itself.
6. VE.Direct MPPT Settings
In normal operation the MPPT charge characteristics are governed by the GX device via DVCC, with
instructions from the connected Pylontech battery.
This section presumes familiarity with VictronConnect
The settings below can be set as a precautionary measure.
MPPT Parameter Setting
Battery voltage. 48V
Absorption voltage 52V
7. Example Wiring Diagram

Last
update:
2021-04-19
11:00
battery_compatibility:pylontech_phantom https://www.victronenergy.com/live/battery_compatibility:pylontech_phantom?rev=1618822856
https://www.victronenergy.com/live/ Printed on 2022-03-05 21:27
8. Troubleshooting
If the system is not operating correctly, go through these steps.
Step 0. If the Inverter/Charger or GX device does not switch on
As a safety precaution, the inverter/charger will not switch on if the GX device is not on. If you are
unable to start the system due to a total system blackout / battery shutdown due to low voltage, you
may need to disconnect the VE.BUS connection cable between the inverter/charger and GX device.

2022-03-05 21:27 11/14 Victron & Pylontech UP2500, US2000, US3000, US2000C, US3000C, UP5000, Phantom-S, Force-L1 & L2
Victron Energy - https://www.victronenergy.com/live/
You can then start the inverter/charger from an external charge source such as a generator or grid
connection. Once the inverter/charger has started, it should supply power to the DC terminals and this
should start the GX device and Pylontech battery again. You will need to then reconnect the VE.Bus
Communications cable back to the inverter/charger and GX device.
Step 1. Check that the Pylontech battery is visible on the GX device list
If its not visible, check:
GX device firmware version (update to latest version, v2.15 or later)
CAN-bus communication cabling between Pylontech and Victron system. Make sure that it is in
the right way around.
Pylontech system is up and running (LEDs are on)
Step 2. Check that the Pylontech battery is ready for use
Check the Max Charge Voltage parameter. This voltage parameter is sent, together with the other
three parameters, by the Pylontech system via the CAN-bus cable. They are visible on the GX device:
Device List → Pylontech battery → Parameters menu.
Step 3. Check the Pylontech manual
The Pylontech manual contains additional diagnostic and troubleshooting information, specifically
around decoding any indicator LEDs.
9. FAQ and Known Issues
The maximum charge and discharge current is limited to 25A, but the data
sheet tells me the maximum is 100A.
The maximum current is limited to keep the battery healthy and reach the 10 year guarantee. In off-

Last
update:
2021-04-19
11:00
battery_compatibility:pylontech_phantom https://www.victronenergy.com/live/battery_compatibility:pylontech_phantom?rev=1618822856
https://www.victronenergy.com/live/ Printed on 2022-03-05 21:27
grid, the inverter can draw more than the 25A limit to run the loads, make sure you have sufficient
batteries installed to keep the load per battery around this limit.
After charging the battery the charge current often changes between 0A and
25A.
This is caused by cell balancing inside the battery. This happens with new batteries and after a deep
discharge.
My system isn't charging at the rated capacity, or my PV is shutting down
Pylontech's BMS will restrict the Charge Current Limit of the battery in cold weather. The precise
temperatures and limits are not published by Pylontech, but anecdotally from reports on Victron
Community it would appear that batteries begin to be limited below 18 degree C, severely limited
below 10 degrees C, and completely restricted from charging below 2 degrees C.
You can confirm if this is affecting your installation be entering the Pylontech Battery menu on your
GX device, and then the Parameters Menu. This will report the Charge Current Limit (CCL) and
Discharge Current Limit (DCL). This information is also logged in the advanced section of the VRM
monitoring portal.
My system only charges the battery to 52.4V
When DVCC is enabled, the battery (via the CAN-bms) is responsible for the charge voltage. The
Pylontech battery requests a charge voltage of 53.2V. We have however found that in practice this is
too high.
The Pylontech battery has 15 cells in series, so 53.2V equates to 3.55V per cell. This is very highly
charged and makes the system prone to go overvoltage.
It should also be noted that a LiFePO4 cell stores very little additional energy above 3.45V.
For this reason we opted to override the BMS and cap the voltage at 52.4V. This sacrifices almost
none of the capacity and greatly improves the stability of the system.
The battery won't charge to 100%
Also see the question above. The state of charge of the battery is estimated based on the overall
voltage and on how well balanced the internal cells are. Because we cap the battery voltage at 52.4V,
the state of charge will sometimes rise very slowly once it reaches the mid-90s. This is normal and
usually resolves over time.

2022-03-05 21:27 13/14 Victron & Pylontech UP2500, US2000, US3000, US2000C, US3000C, UP5000, Phantom-S, Force-L1 & L2
Victron Energy - https://www.victronenergy.com/live/
'Internal Error' shown on battery status
The 'Internal Error' shown in battery status is not a critical error. This only defines that within a
battery system, some of the slave batteries are offline(which is due to these modules have been
discharged to an extremely low SOC or being in idle mode for more than 72hrs), once the system is
available for a charging activity such an error will be automatically eliminated.
'High voltage' warning or alarm shown on battery status
The 'high voltage' warning or alarm is not unusual on new batteries that are not yet balanced. To help
the batteries balance quickly, keep the batteries fully charged until the errors go away. In an ESS
system, set it to 'keep batteries charged', in an off-grid system the fastest way is to either charge /
balance the battery before installation, or to fully charge with a generator if not enough solar is
available to keep the batteries fully charged.
If you are unable to maintain the target voltage to balance the batteries without the 'high voltage'
alarm occurring, you may need to enable and set the “Limit managed battery charge voltage” setting
in the DVCC menu of the GX device. Reduce this voltage as necessary until the alarm stops. After
sufficient time to balance the batteries, try increasing this value until it can be disabled again for
normal operation.
If it is not possible to raise the voltage over time, and eventually disable this manual override:
1: If you have 2 or more batteries in your system, you can try shutting down the system once it is as
close to fully charged as possible, and then physically connecting the batteries in smaller groups (or
even individually) so that balancing can occur on each individual battery without it being masked by
the others connected in parallel. It may help you to see the indicator lights on the battery (if available
on that model) to find which battery might be out of balance with the others.
2: Contact your Pylontech dealer for further assistance (they can provide additional software to see
individual cell level data), or assist with other potential solutions.
10. Further Information
For information about where to buy or find suitably qualified installers, visit the Where to Buy Page.

Last
update:
2021-04-19
11:00
battery_compatibility:pylontech_phantom https://www.victronenergy.com/live/battery_compatibility:pylontech_phantom?rev=1618822856
https://www.victronenergy.com/live/ Printed on 2022-03-05 21:27
Further community discussion about installing and using Pylontech and Victron can found at Victron
Community, use the topic label 'Pylontech'.
DISQUS
View the discussion thread.
From:
https://www.victronenergy.com/live/ - Victron Energy
Permanent link:
https://www.victronenergy.com/live/battery_compatibility:pylontech_phantom?rev=1618822856
Last update: 2021-04-19 11:00