Having an issue on two sites where the BMS of the battery is connected, and settings are done according to the application note. I have limited the charge current to 50A and the charge voltage to 55VDC. MultiPlus-II 5KVA firmware 498 and Cerbo GX firmware V2.92 . The screen snip High voltage alarm.PNG
That high battery voltage alarm is actually a high cell voltage alarm, sent by the BMS. Most likely cause, first thing to check, is cell imbalance, which in itself is not a problem and normal to occur of the battery doesn’t have the option to sufficiently and often enough do the balancing.
The alarms currently trigger just above 52V. Can you see the individual cell voltages? Could be that only one cell reaches the maximum allowed voltage and the BMS triggers the high voltage alarm.
Could be that only one cell reaches the maximum allowed voltage and the BMS triggers the high voltage alarm. If that's the case, lower the battery charging voltage (maybe start at 51.75V and gradually raise it to 52.5V and maybe even higher) and hope that the cells will top balance eventually. @Seb71 The warnings are currently triggering at 52.04V.
New battery was produced 11 months ago. Old two batteries never threw voltage warnings or alarms. Off-grid, batteries are full daily by 13:00. when in doubt, read out the batteries to see the cell voltages.
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.
Check the Allowed to charge minimum temperature setting in VictronConnect. Also, check if the battery temperature offset has not been set to an unrealistic value. Charging the battery below 5°C voids the warranty. Is the battery wet? The battery is not waterproof and is not suitable for outdoor use.
Having an issue on two sites where the BMS of the battery is connected, and settings are done according to the application note. I have limited the charge current to 50A and the charge voltage to 55VDC. MultiPlus-II 5KVA firmware 498 and Cerbo GX firmware V2.92 . The screen snip High voltage alarm.PNG
What can be done to solve the problem. The alarms tend to show up at voltages below the recommended charge voltage settings, ie max voltage for absorption charging 53.2V and Float 53V in accordance with the manual. I have downloaded logs for some of the alarm events, these can be found at the following link.
Inspect the deepest discharge, minimum battery voltage and number of full discharges in the battery monitor. Total and very deep discharge voids the warranty. Is there an indication the battery has been charged with a too-high voltage? Check the maximum battery voltage and the high voltage alarms in the battery monitor.
Maintain UPS Batteries'' Float Voltage Through Regular Maintenance Another crucial item in battery performance is float voltage. The battery manufacturer provides the proper float voltage, usually 2.25 to 2.27 volts per cell. The …
The hysteresis is important to prevent the nuisance clearing and re-triggering of an alarm state when the system is close to the trigger. Consider the following example: you want an alarm as soon as the battery voltage drops below 10V that only clears when the voltage rises again above 11.5V. The hysteresis is 11.5V
After setup the batteries were charged from 70% to 100% the VRM is showing an alarm of High battery voltage. Battery reading 52.29V. Victron energy website shows Max Charge Voltage for this battery as 53.2V. HELP PLEASE
so this summer I''ve gotten several high voltage alarms (14.6v) with my pair of LiFePO4 batteries (280a EVE cells). so investigating the victron SCC profile; the full charge …
A timely alarm can be generated by monitoring the midpoint of the battery bank (i.e. by splitting the string voltage in half and comparing the two string voltage halves). The midpoint deviation will be small when the battery bank is at rest, and will increase:
That high battery voltage alarm is actually a high cell voltage alarm, sent by the BMS. Most likely cause, first thing to check, is cell imbalance, which in itself is not a problem and normal to occur of the battery doesn''t have the option …
so this summer I''ve gotten several high voltage alarms (14.6v) with my pair of LiFePO4 batteries (280a EVE cells). so investigating the victron SCC profile; the full charge voltage is 14.2 (looks correct) and the float charge is 13.5 (also correct) but then I noticed a little blip in the manual (yes; I read it) that LiFePO4 has a default absorption time of 2 hours and …
High voltage alarm: 29V High voltage reset alarm: 28.4V One last thing: I mentioned earlier that I added 200W load and alarms went away. I always have a load of about 10W (Raspberry Pi running VRM) but the load is less than the 15W minimum that can be seen by the AC load reading in the system. A real flaw in the Victron logics if you ask me.
On the Cerbo, see which Pylontech is generating this overvoltage and if it''s still the same one, run BatteryView on this Pylontech to see if it''s still the same cell that''s causing the problem. Thanks for the answers! @duivert the batteries are indeed pretty new...
The mains charger and MPPTs are set at the default settings for AGM batteries. The BMV has the high voltage alarm threshold set at 14.7 and clearing at 14.5. I am contemplating setting the threshold to the fast charge voltage of 14.9. The only thing that I can think of as being different is that the water temperature may be lower (about 11 degrees C) …
A timely alarm can be generated by monitoring the midpoint of the battery bank (i.e. by splitting the string voltage in half and comparing the two string voltage halves). The midpoint deviation …
That high battery voltage alarm is actually a high cell voltage alarm, sent by the BMS. Most likely cause, first thing to check, is cell imbalance, which in itself is not a problem …
The hysteresis is important to prevent the nuisance clearing and re-triggering of an alarm state when the system is close to the trigger. Consider the following example: you want an alarm as soon as the battery voltage drops below 10V …
Excessive Voltage drops, if not handled carefully, will lead to low voltage powering your equipment, which results in improper, or no operation to your equipment – causing damage to them. Voltage drops also lead to heat …
When enabled, the alarm will activate when the battery voltage rises above the set value for more than 10 seconds. The alarm will deactivate when the battery voltage drops below the clear value.
When the charge voltage of a 24V battery system increases to more than 27.3V, the Battery Balancer will turn on and compare the voltage over the two series connected batteries. The Battery Balancer will draw a current of up to 0.7A from the battery (or parallel connected batteries) with the highest voltage. The resulting charge current differential will ensure that all batteries …
This low voltage circuit can be used to monitor batteries and other volatile sources of current for problems. The circuit sounds an alarm and lights an LED, but can be interfaced to any number of other circuits for many different uses. Circuit diagram. Parts: R1, R3 1K 1/4W Resistor R2 5K Pot U1 LM339 Voltage comparator IC D1 1N5233B Zener ...
The vigh voltage alarm will probably not be referring to the whole battery bank voltage but rather one or two cells in the bank. Try charging at lower current for a bit or …
Inspect the deepest discharge, minimum battery voltage and number of full discharges in the battery monitor. Total and very deep discharge voids the warranty. Is there an indication the …
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.
The vigh voltage alarm will probably not be referring to the whole battery bank voltage but rather one or two cells in the bank. Try charging at lower current for a bit or keeping them at 100% for a few days to see if allowing the pack to balance properly might help.
Some of these UPSs keep generating alerts saying that a high input voltage is receiving to the UPSs. following are the voltage parameters configured in the UPS Rated …
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