I had sent an inquiry to Outback about the settings for Lithium batteries and what could be done to up the voltage enough to properly charge the batteries. The following is what was sent to me. FWIW the clouds have cleared out a bit and seeing some more sun and the outback is outputting 14.2 volts. Also running the AIM charger to bring the battery bank up full so I can reset the monitor to 100%.
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Hello *******,
Thank you for contacting OutBack Power Post Sales Technical Support Team.
There won't be a bulk charging stage to set in the Outback charge controllers. This bulk charging is the first stage in the three-stage charge cycle of the batteries. It is a constant-current stage which drives the battery voltage up towards the Absorb voltage settings configured and suggested by your battery manufacturer. This stage is not timed. It will charge as long as necessary to complete the stage, regardless of any timer set points. If little PV energy is available, it may take a long time for this stage to complete. If the Flexmax is in a different stage and little PV energy is available, it may return to Bulk. This stage is temperature-compensated.
Make sure that you have the battery charging parameters (voltages and timers) listed in the setup menu as recommended by your battery manufacturer.
Regards,
Ravi
OutBack Power Tech Support.
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