1. The starter battery MUST be AGM or Lead/Acid. If all the above is correct, do the following:
If it is Lithium, remove it and return it to the factory standard.
2. The alternator can not deliver enough power.
3. Engine or vehicle loads on a 12 V alternator are high. (Nissan Patrol has electric power steering and takes a lot of power, leaving little powerfor Scotty AI. Scotty AI takes power AFTER the vehicle loads, so they are not compromised.
4. Cable sizes are too small (both positive and or negative).
5. Target Battery(s) can not accept charging at a higher rate, either because they are high SOC or, the temperature has limited BMS, or the Lithium battery just has a lower charging rate (less expensive Lithium batteries.) 6. If charging a caravan from a vehicle with Scotty AI in it and a 7-10 m run at 48 V from Scotty AI to Lithium in the Van, then especially when solar is running, the voltage differential will not be as high and an expected charge rate is 1000 W at caravan 49-50 V and 2000 W when the expected caravan charge rate is 47-48 V.
7. Note that Scotty AI does not use the State of Charge in any calculation.We only use voltage for control.
8. State of Charge is a ‘Calculated concept’ and does not exist in any measured form. It is a calculation that may be reasonable after the batteries are 100% for 2 hours or so. If batteries operate in the 20-85% band repeatedly over a 1-2 week period, they will likely be around 50% max of their capacity, because the cells have not balanced. Safiery’s 48 V batteries actively balance between 90-95% SOC calc value.They are only fully charged when the calculation shows 100% SOC.
NEVER DISCONNECT THE NEGATIVE - NEVER
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