The Discover Lithium Battery and SUNSYNK device automatically manage the battery charge and discharge rates. Using large solar arrays with battery banks that are too small can exceed the operating limits of the battery to charge and possibly lead to the BMS triggering over-current protection. Battery capacity must accept the maximum charge current of the system, or charging must be curtailed below the operating limit of the installed batteries. Derive this value by adding together the charge capacities of all inverter-chargers and solar charge controllers in the system. Additionally, battery peak capacity must support the surge requirements demanded by the load attached to the inverter-charger. Match all inverter-charger peak power values with the sum of all battery peak battery current values.
Inverter Peak = (Inverter Surge Value) / (Inverter Efficiency) / (48V: Low Battery Cut-Off)
|
Single-Phase Models |
Inverter Peak (10 seconds) |
Max Continuous Charge |
Max Continuous Discharge |
AES RACKMOUNT 48-48-5120 Recommended per inverter (5) |
HELIOS ESS 52-48-16000 Recommended per inverter (6) |
|---|---|---|---|---|---|
|
SUNSYNK-3K-SG04LP1 |
128 A (1) |
70 ADC |
70 ADC |
1 |
1 |
|
SUNSYNK-3.6K-SG04LP1 |
154 A (1) |
90 ADC |
90 ADC |
1 |
1 |
|
SUNSYNK-5K-SG04LP1 |
213 A (1) |
120 ADC |
120 ADC |
2 |
1 |
|
SUNSYNK-8K-SG05LP1 |
342 A (2) |
190 ADC |
190 ADC |
2 |
1 or 2 (7) |
|
SUNSYNK-12K-SG01LP1 |
518 A (3) |
220 ADC |
220 ADC |
3 |
2 |
|
SUNSYNK-14K-SG01LP1 |
604 A (3) |
250 ADC |
250 ADC |
3 |
2 |
|
SUNSYNK-16K-SG01LP1 |
691 A (3) |
290 ADC |
290 ADC |
4 |
2 or 3 (7) |
|
SUNSYNK MAX |
687 A (4) |
300 ADC |
300 ADC |
4 |
2 or 3 (7) |
(1) Calculated based on the surge power and efficiency CEC as published in SUNSYNK Hybrid Parity (Super) Inverter Datasheet SUNSYNK-3K-SG04LP1 / SUNSYNK-3.6K-SG04LP1 / SUNSYNK-5K-SG04LP1 (version 14, 05/09/22).
(2) Calculated based on the surge power and efficiency CEC as published in SUNSYNK Hybrid Parity (Super) Inverter Installer Manual SUNSYNK-8K-SG05LP1 (version 16, 10/04/22).
(3) Calculated based on the surge power and efficiency CEC as published in SUNSYNK Single-Phase Hybrid Inverter Datasheet SUNSYNK-12K-SG01LP1 / SUNSYNK-14K-SG01LP1 / SUNSYNK-16K-SG01LP1 (version 1, 09/22/23).
(4) Calculated based on the surge power and efficiency CEC as published in SUNSYNK MAX User Manual (version 11, 04/04/23).
(5) Discover AES RACKMOUNT 48-48-5120/48-48-5120-H Battery, Peak Power: 218 A RMS (3 seconds), 200 A DC Continuous Charge/Discharge, as published in Discover HELIOS ESS AES RACKMOUNT Installation and Operation Manual (805-0043 Rev J).
(6) Discover HELIOS ESS 52-48-16000 Battery, Peak Power: 300 A RMS (15 seconds), 200 A DC Continuous Charge/Discharge, as published in Discover HELIOS ESS Installation and Operation Manual (805-0090 Rev D).
(7) The lower number of batteries supports the maximum continuous charge and discharge currents from this inverter. To use this lower number, limit the number of active heavy loads at any time on the system. If the peak current of loads on the circuit will push the inverter and batteries to their maximum limits, consider using the higher number of batteries.
Inverter Peak = (Inverter Surge Value) / (Inverter Efficiency) / (48V: Low Battery Cut-Off)
|
Three-Phase Models |
Inverter Peak (10 seconds) |
Max Continuous Charge |
Max Continuous Discharge |
AES RACKMOUNT 48-48-5120/ 48-48-5120-H Recommended per inverter (2) |
HELIOS ESS 52-48-16000 Recommended per inverter (3) |
|---|---|---|---|---|---|
|
SUNSYNK-8K-SG04LP3 |
342 A |
190 ADC |
190 ADC |
2 |
1 or 2 (4) |
|
SUNSYNK-10K-SG04LP3 |
427 A |
210 ADC |
210 ADC |
3 |
2 |
|
SUNSYNK-12K-SG04LP3 |
512 A |
240 ADC |
240 ADC |
3 |
2 |
(1) Calculated based on the surge power and max Euro efficiency as published in SUNSYNK Three Phase Hybrid Inverter 5 to 12 kW datasheet.
(2) Discover AES RACKMOUNT 48-48-5120/48-48-5120-H Battery, Peak Power: 218 A RMS (3 seconds), 200 A DC Continuous Charge/Discharge, as published in Discover HELIOS ESS AES RACKMOUNT Installation and Operation Manual (805-0043 Rev J).
(3) Discover HELIOS ESS 52-48-16000 Battery, Peak Power: 300 A RMS (15 seconds), 200 A DC Continuous Charge/Discharge, as published in Discover HELIOS ESS Installation and Operation Manual (805-0090 Rev D).
(4) The lower number of batteries supports the maximum continuous charge and discharge currents from this inverter. To use this lower number, limit the number of active heavy loads at any time on the system. If the peak current of loads on the circuit will push the inverter and batteries to their maximum limits, consider using the higher number of batteries.