Victron Pylontech US5000C User manual

2023-06-30 16:58 1/15 Victron & Pylontech UP2500, US2000, US3000, US2000C, US3000C, US5000, US5000B, US5000C, Pelio-L, UP5000,
Phantom-S, Force-L1 & L2
Victron Energy - https://www.victronenergy.com/live/
Victron & Pylontech UP2500, US2000,
US3000, US2000C, US3000C, US5000,
US5000B, US5000C, Pelio-L, 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 & US5000(B)
US5000C &
Pelio-L
Force-L1 &
L2
Nominal voltage 24V 48V 48V 48V 48V 48V
Module capacity 2.55 kWh 2.4 kWh 3.5 kWh 4.8 kwh 5.12kWh 3.55 kWh
Minimum Venus
firmware v2.40 v2.20 v2.20 v2.20 imminent v2.20
* 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:

Last update:
2023-06-30 16:32 battery_compatibility:pylontech_phantom https://www.victronenergy.com/live/battery_compatibility:pylontech_phantom
https://www.victronenergy.com/live/ Printed on 2023-06-30 16:58
Off-grid (DVCC)
Grid Backup (DVCC or ESS)
Energy Storage Systems (ESS) - Self Consumption (ESS - Start page)
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.

2023-06-30 16:58 3/15 Victron & Pylontech UP2500, US2000, US3000, US2000C, US3000C, US5000, US5000B, US5000C, Pelio-L, UP5000,
Phantom-S, Force-L1 & L2
Victron Energy - https://www.victronenergy.com/live/
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.
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:
2023-06-30 16:32 battery_compatibility:pylontech_phantom https://www.victronenergy.com/live/battery_compatibility:pylontech_phantom
https://www.victronenergy.com/live/ Printed on 2023-06-30 16:58
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.
Important note on DIP switches
No adjustment to the DIP switches is necessary, unless you are using a LV-Hub to connect a large
number of modules. The address DIP-switches must be set to 000 for correct operation, and the GX
device will not detect the battery if you use any other setting. Larger batteries using an LV-Hub is
discussed later in this document.
Type A cable
The Victron VE.Can to CAN-bus BMS type A Cable, part number ASS030710018 is used for connection
with US2000C / US3000C / UP5000 / US5000 / US5000B / Force-L.
Type B cable
The Victron VE.Can to CAN-bus BMS type B Cable, part number ASS030720018 is used for connection

2023-06-30 16:58 5/15 Victron & Pylontech UP2500, US2000, US3000, US2000C, US3000C, US5000, US5000B, US5000C, Pelio-L, UP5000,
Phantom-S, Force-L1 & L2
Victron Energy - https://www.victronenergy.com/live/
with US2000 / US3000 / UP2500;
Note you cannot use the comms cable supplied by Pylontech for this connection between the master
battery and the GX device.
Connections
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 change the
VE.Can port profile to CAN-bus BMS (500 kbit/s) 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
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
When the Pylontech battery is connected to the BMS-Can port of a GX device (running v2.80 and
later) the following DVCC settings will be set and enforced automatically.
If you are running a GX firmware version prior to this, these will need to be manually configured.
Manual Configuration
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:

Last update:
2023-06-30 16:32 battery_compatibility:pylontech_phantom https://www.victronenergy.com/live/battery_compatibility:pylontech_phantom
https://www.victronenergy.com/live/ Printed on 2023-06-30 16:58
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.
Additional optional controls
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
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.
Other information
The parameters option within the battery page shows the battery charge and discharge limits as
communicated to the DVCC system by the BMS.

2023-06-30 16:58 7/15 Victron & Pylontech UP2500, US2000, US3000, US2000C, US3000C, US5000, US5000B, US5000C, Pelio-L, UP5000,
Phantom-S, Force-L1 & L2
Victron Energy - https://www.victronenergy.com/live/
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. The battery data sheet specifies 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.
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.
Note that 'details' menu of the battery (e.g. Lowest and Highest cell voltages etc) is only supported
with recent Pylontech firmware.
The firmware requirements for the details menu is documented in the table below.
Product Firmware version
LV HUB v1.8
US2000B v2.9
US2000C & US3000C v2.1

Last update:
2023-06-30 16:32 battery_compatibility:pylontech_phantom https://www.victronenergy.com/live/battery_compatibility:pylontech_phantom
https://www.victronenergy.com/live/ Printed on 2023-06-30 16:58
Product Firmware version
ForceL v1.4
US5000 & Pelio-L All firmware versions
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.

2023-06-30 16:58 9/15 Victron & Pylontech UP2500, US2000, US3000, US2000C, US3000C, US5000, US5000B, US5000C, Pelio-L, UP5000,
Phantom-S, Force-L1 & L2
Victron Energy - https://www.victronenergy.com/live/
5.3 Inverter Settings
In the Inverter tab of VEConfigure
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.

Last update:
2023-06-30 16:32 battery_compatibility:pylontech_phantom https://www.victronenergy.com/live/battery_compatibility:pylontech_phantom
https://www.victronenergy.com/live/ Printed on 2023-06-30 16:58
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.
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
Note for MPPT RS - the Remote Mode in VictronConnect must be set to Remote on/off, not BMS.
7. Example Wiring Diagram

2023-06-30 16:58 11/15 Victron & Pylontech UP2500, US2000, US3000, US2000C, US3000C, US5000, US5000B, US5000C, Pelio-L, UP5000,
Phantom-S, Force-L1 & L2
Victron Energy - https://www.victronenergy.com/live/
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
When the grid is connected there are two software controls to sustain voltage. The Minimum SOC
(while grid is connected) set in the GX device, and the sustain voltage (set in the ESS assistant).
If the grid fails and no AC supply is available, in this deeply discharged state, and the battery has set

Last update:
2023-06-30 16:32 battery_compatibility:pylontech_phantom https://www.victronenergy.com/live/battery_compatibility:pylontech_phantom
https://www.victronenergy.com/live/ Printed on 2023-06-30 16:58
the Discharge Current Limit (DCL) to 0A, then the inverter will turn off in a software off state. The GX
device will remain on, as there is still DC voltage provided by the batteries for a while.
Note in this state an AC PV inverter will not produce any power, and will not start up, as it requires the
inverter to create the sine wave to synchronise.
If the AC grid or generator, or DC MPPT is connected, then the battery will begin to charge and then
the inverter will start itself again automatically, also resuming charge from an AC PV inverter.
If instead the battery becomes completely discharged the battery will further protect itself by not just
sending the 0A discharge limit, but also disconnecting DC voltage from the battery terminals (via
internal MOSFETS). As there is no DC voltage available on the terminals any more the GX device will
also shut down, and the inverter will also then be hard off (not just software off).
If you then reconnect a DC charge source, or AC input supply (grid or generator), after approximately
2 minutes the inverter will start up again, power the DC bus, powering up the GX device, and then
powering up the battery, and the system will recover.
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.

2023-06-30 16:58 13/15 Victron & Pylontech UP2500, US2000, US3000, US2000C, US3000C, US5000, US5000B, US5000C, Pelio-L, UP5000,
Phantom-S, Force-L1 & L2
Victron Energy - https://www.victronenergy.com/live/
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-
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

Last update:
2023-06-30 16:32 battery_compatibility:pylontech_phantom https://www.victronenergy.com/live/battery_compatibility:pylontech_phantom
https://www.victronenergy.com/live/ Printed on 2023-06-30 16:58
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.
'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

2023-06-30 16:58 15/15 Victron & Pylontech UP2500, US2000, US3000, US2000C, US3000C, US5000, US5000B, US5000C, Pelio-L, UP5000,
Phantom-S, Force-L1 & L2
Victron Energy - https://www.victronenergy.com/live/
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.
Further community discussion about installing and using Pylontech and Victron can found at Victron
Community, use the topic label 'Pylontech'.
LV-Hub specific information
Please discuss large Pylontech systems that require the LV-Hub with your experienced Pylontech
agent FIRST. These additional LV-Hub references are provided without any support or endorsement
from Victron, and should not be assumed to be up to date. Defer to your experienced dealers
recommendations.
Pylontech LV-hub manual
Victron Community discussion on LV-hub configuration settings with Victron
DISQUS
View the discussion thread.
From:
https://www.victronenergy.com/live/ - Victron Energy
Permanent link:
https://www.victronenergy.com/live/battery_compatibility:pylontech_phantom
Last update: 2023-06-30 16:32