Hi,
I have 4 12V Battleborn batteries set up as a 24V off grid system in my outdoor shed that are charged by solar 100%. The system runs a 200 watt load 24/7 and had been working well for 2 years. A month or two ago, my Victron Multiplus 3000 started to turn off w low voltage at the 50% SOC and I contacted support from Battleborn. They informed me that a system that runs solely off of solar charging is prone to have battery imbalance issues. I worked closely with the rep and topped up each battery 12 V individually after each was disconnected using a BSC 1P65 charger until the charge state reached float. I reconnected everything but the symptom still existed.
I tried the same steps for a second time, but this time I unplugged the charger until all lights turned off, moved to the next battery and plugged the charger into shore power again. This ensured that no cached values were in the Victron app. And it seems to have resolved my issue.
I wanted to share the steps I took in case someone with a similar configuration ran into the same problem so that they would not have to deal with figuring out a solution after 2 months of trying.
Procedure:
- Disconnect all batteries.
- For each battery:
- Connect positive and negative alligator clips to the battery and plug into shore power.
- Take “Before Charging” voltage.
- USE BSC IP65 and charge until state is in float.
- Notate Float Voltage.
- Notate bulk/abs/float times.
- Notate V start and V end voltages from the History tab in the APP.
- Unplug BSC IP65 from shore power.
- Remove alligator clips.
- Once all the lights from BSC IP65 turn off, repeat step number 2 for the next battery.
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For each battery take the resting voltage.
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Reconnect all batteries.
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Power inverter with battery bank.