Deye SE-G5.1 Pro-B
Official manufacturer Global (EU/AU/JP brochures published) verified Sept. 1, 2026
UNKNOWN
Identity
| category | batteries |
| ean | UNKNOWN |
| generation | Pro |
| manufacturer | Deye |
| market_version | UNKNOWN |
| model | SE-G5.1 Pro-B |
| mpn | SE-G5.1 Pro-B |
| product_family | Deye SE-G5.1 / SE-G5.1 Pro / SE-G5.1 Pro-B / SE-G5.3 |
| product_revision | Pro-B (with integrated miniature circuit breaker) |
| product_status | active |
| region | Global (EU/AU/JP brochures published) |
| release_year | UNKNOWN |
| sku | UNKNOWN |
Electrical
| bms_architecture | {'type': 'cascade primary/secondary over RJ45 IN/OUT; first battery is primary', 'separate_master_bmu_required': False, 'modules_per_stack': 'up to 16 per cluster in Mode 2', 'max_parallel_groups': '64 packs total (327 kWh); 32 without external setup'} |
| chemistry | LFP (LiFePO4) |
| communication_can | True |
| communication_rs485 | True |
| firmware_requirements | UNKNOWN |
| inverter_protocol_setup_code | CAN 00 (Deye inverter lithium-mode battery-protocol selection number for all Deye-brand LV batteries, per Approved Battery list DY-LV48-0109, 2025-07-24) |
| max_continuous_charge_current_a | 100 |
| max_continuous_discharge_current_a | 100 |
| max_continuous_power_kw | 5.12 (100 A x 51.2 V; Deye does not print a kW figure) |
| max_parallel_units |
64 packs (327 kWh) maximum; up to 32 packs without external setup. Parallel Mode 1 (<=12 kW): max 240 A total, 4 batteries. Parallel Mode 2 (>12 kW): max 300 A total, up to 16 batteries per cluster.
SE-G5.1 Pro-B user manual — user manual p.15-16
|
| max_series_units | N/A (LV parallel-only architecture) |
| min_series_units_hv | N/A |
| nominal_energy_kwh | 5.12 |
| nominal_voltage_v | 51.2 |
| officially_supported_inverter_brands | ['Deye', 'Sunsynk'] |
| officially_supported_inverter_models | ['Listed in the Deye Approved Battery List DY-LV48-0109 as an approved Deye battery for: SUN-3.6/5/6/7.6/8K-SG01LP1-EU, SUN-5/6/7.6/8K-SG01LP1-US, SUN-3.6/5/6K-SG03LP1-EU, SUN-3/3.6/5/6K-SG04LP1-EU, SUN-3.6/5/6/7.6/8K-SG05LP1-EU, SUN-5/6/8/10/12K-SG04LP3-EU, SUN-12/14/16K-SG01LP1-EU'] |
| peak_current_a |
150 (2 min @ 25 C)
SE-G5.1 Pro-B user manual — user manual p.5, 'Peak (2 min @ 25 C) 150 A'
|
| supported_inverter_protocols | ['CAN 2.0 at 500 kbps (PCS port)', 'RS485 at 9600 bps', 'USB port for firmware upgrade', 'RJ45 IN / OUT ports for parallel cascade'] |
| usable_energy_kwh | 4.61 |
| voltage_class | LV |
| voltage_range_v |
43.2-57.6
SE-G5.1 Pro-B user manual — user manual p.5 spec table, 'Operating Voltage Range 43.2~57.6 V'
|
Physical / mechanical
| depth_mm | 540 |
| enclosure_material | UNKNOWN |
| height_mm | 133 |
| housing_color | UNKNOWN |
| mounting_bolt_size | M6 power terminals; M10 copper lugs on the supplied cables |
| mounting_type | ['wall', 'floor', 'rack'] |
| rack_units | fits a 19-inch standard cabinet with cabinet depth >= 600 mm (133 mm height ~ 3U) |
| shipping_weight_kg | UNKNOWN |
| terminal_locations | front panel: power terminals, MCB, CAN/RS485 PCS port, parallel IN/OUT RJ45, USB |
| torque_specs |
M6 power terminal: less than 8.0 N.m (81.5 kgf.cm)
SE-G5.1 Pro-B user manual — user manual, 'less than 8.0 Nm (81.5 kgf.cm)' for M6 power terminals
|
| weight_kg | 45 |
| width_mm | 445 |
Installation
| indoor_outdoor | indoor (IP20) |
| installation_humidity_range | 5%-95% |
| max_installation_altitude_m | 2000 |
| mounting_orientation | wall-mounted, floor-mounted or rack-mounted |
Environment
| charge_temperature_c | 0 to +55 |
| cooling_method | natural convection |
| discharge_temperature_c | -20 to +55 |
| ip_rating | IP20 |
| max_altitude_m | 2000 |
| relative_humidity | 5%-95% |
| storage_temperature_c | 0 to +35 |
Interfaces & connectors
| battery_terminal_type | M6 studs; supplied cables terminated with M10 copper lugs |
| can | yes - CAN 2.0, 500 kbps |
| protocol_notes | First battery in the chain is primary; OUT port of battery n connects to IN port of battery n+1. No DIP address switch is described in the manual. |
| rs485 | yes - 9600 bps |
| usb | yes - firmware upgrade |
Protection
| cell_balancing | UNKNOWN |
| integrated_breakers_fuses | integrated miniature circuit breaker controlling both the total positive and negative circuits; rating not printed in the manual |
| over_current | UNKNOWN (thresholds not printed) |
| over_temperature | high/low temperature protection for charge and discharge |
| over_voltage | yes |
| short_circuit | UNKNOWN |
| under_voltage | yes |
Certifications
| emc | ['FCC'] |
| other | ['REACH', 'RoHS'] |
| regional | ['CE', 'UKCA'] |
| safety |
['IEC 62619', 'UL 1973', 'UL 9540A', 'VDE 2510-50']
SE-G5.1 Pro-B user manual — user manual p.5, 'UN38.3, IEC62619, CE,UKCA, VDE2510-50, FCC, UL1973, UL9540A, REACH, ROHS'
|
| transport | ['UN38.3', 'UN3480 Class 9', 'PI965 Section I'] |
Warranty & service
| cycle_life |
>=6000 (25 C +/- 2 C, 0.5C/0.5C, 90% DOD, 70% EOL)
SE-G5.1 Pro-B user manual — user manual p.5, 'Cycle Life >=6000(25C+/-2C,0.5C/0.5C,90%DOD,70%EOL)'
|
| design_life_years | UNKNOWN |
| round_trip_efficiency | UNKNOWN |
| standard_years | UNKNOWN (10 years for the sibling AI-W5.1-B; not printed on the SE-G5.1 Pro-B manual) |
Packaging & logistics
| gross_weight_kg | UNKNOWN (unit weight 45 kg) |
| transport_restrictions |
UN3480, hazard class 9; packing instruction PI965 Section I; Class 9 Miscellaneous Dangerous Goods and UN identification labels required
SE-G5.1 Pro-B user manual — user manual p.22
|
Documents
certificate
{# Located but never retrieved: listed, but deliberately not linked, and it
backs no stored value. #}
CE-EMC certificate SE-G5.1 Pro-B (SZEM2309006223AT) — located, not retrieved
rev UNKNOWN
certificate
{# Located but never retrieved: listed, but deliberately not linked, and it
backs no stored value. #}
UKCA certificate SE-G5.1 Pro-B (SZEM2309006223AT-UKCA-VOC) — located, not retrieved
rev UNKNOWN
datasheet
{# Located but never retrieved: listed, but deliberately not linked, and it
backs no stored value. #}
Deye SE-G5.1 Pro-B series brochure 20260115 v1.0 — located, not retrieved
rev v1.0
Recorded conflicts
physical.width_mm Review required
445 mm — SE-G5.1 Pro-B user manual p.5, '445*133*540'
440 mm — deye.com product page spec table, '440 x 133 x 540 mm'
rounding / with-or-without rack-ear measurement
physical.width_mm Review required
445 mm — SE-G5.1 Pro-B user manual p.5, '445*133*540'
440 mm — deye.com product page spec table, '440 x 133 x 540 mm'
rounding / with-or-without rack-ear measurement
Additional documented parameters
Recorded verbatim from the source; no schema field exists for these yet.
| Cabinet requirement | 19-inch standard cabinet, cabinet depth >=600mm |
| Miniature circuit breaker | Control total positive and negative circuit off and on |
| Parallel Mode 1 / Mode 2 | Mode 1 (<=12 kW): max 240 A total, 4 batteries; Mode 2 (>12 kW): max 300 A total, up to 16 batteries per cluster |