After LCD initialization, start the inverter. Check that the cables between the UPS and the lithium battery cabinet are properly connected. Turn off mains input circuit breaker 1 (Q1-1), mains input circuit breaker 2 (Q1-2), and bypass input switch (Q2).
Capacity Needs: A 5 kWh residential system averages $4,000–$6,000 USD, while commercial setups (20+ kWh) range from $15,000 to $30,000. Import Costs: Tonga's remote location adds 10–15% to prices due to shipping and tariffs.
60 kVA selectivity of down stream circuit breaker: After 8. (Circuit breaker specifications: iC65H-C-16A) All wiring must comply with all applicable national and/or electrical codes.
Disconnect and charge separately if necessary: If you find a significant imbalance that isn't correcting itself, you may need to disconnect the batteries and charge them separately to bring them back to the same voltage level.