June 28, 20232 yr Hi , I have a 5kW office back up system without solar. 5 kW Hubble battery 5kW Luxpower inverter Everything works well and the battery recharges quickly after loadshedding at about 1000watt and then stops charging at 81%. What are the possibilities.? I will appreciate any comments.
June 28, 20232 yr Where did you configure your battery? It says 150Ah capacity at the bottom of the screen, while it should be 110Ah for Hubble AM-2. Edited June 28, 20232 yr by PowerUser
June 29, 20232 yr 16 hours ago, Fynbos said: Hi , I have a 5kW office back up system without solar. 5 kW Hubble battery 5kW Luxpower inverter Everything works well and the battery recharges quickly after loadshedding at about 1000watt and then stops charging at 81%. What are the possibilities.? I will appreciate any comments. Which model Hubble battery do you have? Do you have a communication cable between the battery and inverter? Is the inverter set up to use the battery comms or is it set in a user mode with the charge voltages set manually? What are your charge voltages and currents set to? It could be that 52.5V is too low to fully charge the battery.
June 29, 20232 yr 16 hours ago, Fynbos said: Hi , I have a 5kW office back up system without solar. 5 kW Hubble battery 5kW Luxpower inverter Everything works well and the battery recharges quickly after loadshedding at about 1000watt and then stops charging at 81%. What are the possibilities.? I will appreciate any comments. Can you share any charts showing battery voltage and battery current as well as SOC over time?
June 29, 20232 yr 1 hour ago, Fynbos said: No comm cable between the two. Without comms, you can only get indicative state of charge based on the battery voltage.
June 30, 20232 yr 15 hours ago, Fynbos said: No comm cable between the two. Your charge voltage seems fine, but your float is too high and shouldn't ever be higher than the charge voltage, set that to 52.6V. You should probably also change the "AC Charge End Battery Voltage" to 53.6V. On 2023/06/28 at 4:20 PM, Fynbos said: stops charging at 81% As @Kilowatt Power says, you can't get an accurate SOC from the voltage, so if you are getting that 81% from the inverter without comms then it is probably incorrect. The only way to truly know if your battery is charging to 100% is with comms to the inverter or a PC.
June 30, 20232 yr 41 minutes ago, jumper said: The only way to truly know if your battery is charging to 100% is with comms to the inverter or a PC. Technically not correct, if the inverter holds the voltage at bulk charge level and the battery stops taking any extra current, then the inverter knows the battery is fully charged.
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