ANMA System Building

Identity

category	batteries
ean	UNKNOWN
generation	Pro
manufacturer	Deye
market_version	UNKNOWN
model	BOS-B Pro-A3
mpn	BOS-B-Pack16-A3 (battery module)
product_family	Deye BOS-B C&I rack ESS (BOS-B / BOS-B Pro-A3)
product_revision	Pro-A3
product_status	active
region	AS, AF, AU, EU, LATAM (per the deye.com product page title)
release_year	UNKNOWN (datasheet path dated 2026-06-05)
sku	UNKNOWN

Electrical

bms_architecture	{'type': 'series string of 5U BOS-B-Pack16-A3 modules, each with an integrated module-level BMS, in a floor-standing rack', 'separate_master_bmu_required': 'UNKNOWN (a rack-level controller is implied but no part number is printed on the datasheet)', 'external_controller': 'UNKNOWN', 'modules_per_stack': '5-16', 'max_parallel_groups': '16 units in parallel, maximum 2.3 MW / 4.1 MWh'}
chemistry	LFP (LiFePO4)
communication_can	True
communication_rs485	True
firmware_requirements	UNKNOWN
max_continuous_charge_current_a	180 Deye BOS-B Pro-A3 Datasheet — datasheet, 'Max Charge/Discharge Current 180A'
max_continuous_discharge_current_a	180
max_continuous_power_kw	UNKNOWN (Deye prints current only; PCS options 100 kW / 125 kW up to 2.5 MW)
max_parallel_units	16 units in parallel, maximum 2.3 MW / 4.1 MWh
max_series_units	16
min_series_units_hv	5
nominal_energy_kwh	80.3-257.2 (system, 5-16 modules of 16.08 kWh); 257.2 at 16 modules
nominal_voltage_v	819.2 at 16 modules (= 51.2 V x number of modules)
officially_supported_inverter_brands	['Deye']
officially_supported_inverter_models	['UNKNOWN - BOS-B Pro-A3 is NOT named in the Deye Approved Battery list DY-HV(160-800)-028 (2025-08-09); that list names the earlier BOS-B. The datasheet describes the product as supplied with hybrid inverter, PCS or MPPT configurations rather than paired with named third-party inverter models.']
peak_current_a	UNKNOWN (no separate peak row on the fetched datasheet extraction)
supported_inverter_protocols	['CAN', 'RS485', 'TCP (Ethernet)']
usable_energy_kwh	231.48 at 16 modules (datasheet); the deye.com product page prints 231.51 kWh at a 'recommended 90% DoD' while the datasheet prints 'Recommended DoD 5% ~ 85%' - see data_conflicts
voltage_class	HV (series string of 51.2 V modules)
voltage_range_v	665.6-934.4 at 16 modules Deye BOS-B Pro-A3 Datasheet — datasheet, 16-module column 'Operating Voltage Range 665.6~934.4V'

Physical / mechanical

depth_mm	1305
dimensions_label_as_printed	1067 x 1305 x 800 to 2150 x 1305 x 800 (W x D x H)
height_mm	800
module_part_number	BOS-B-Pack16-A3 Deye BOS-B Pro-A3 Datasheet — datasheet, module 'BOS-B-Pack16-A3', '16.08kWh', '314Ah', '51.2Vdc', '126kg'
module_rack_units	5U standard chassis
module_weight_kg	126
mounting_type	['floor', 'rack']
rack_units	5U per module
shipping_weight_kg	UNKNOWN
terminal_locations	UNKNOWN
torque_specs	UNKNOWN
weight_kg	758 to 2240 (system, by configuration)
width_mm	1067 (smallest configuration) to 2150 (16-module configuration)

Installation

indoor_outdoor	indoor (IP20)
max_installation_altitude_m	3000
mounting_orientation	floor-standing rack
surface_requirements	UNKNOWN

Environment

charge_temperature_c	0 to +55
cooling_method	smart fan cooling (forced air) Deye BOS-B Pro-A3 Datasheet — datasheet, 'Cooling Smart fan cooling'
discharge_temperature_c	-20 to +55
ip_rating	IP20
max_altitude_m	3000
relative_humidity	5%-85%
storage_temperature_c	0 to +35

Interfaces & connectors

bluetooth	yes - Bluetooth app
can	yes
cloud_api	Deye Cloud
ethernet	yes - TCP
protocol_notes	Datasheet row: 'Communication TCP / RS485 / CAN'; local display shows SOC and fault code.
rs485	yes
usb	yes - firmware upgrade

Controls & display

display_type	SOC / fault-code display with status indicators
local_display	True
mobile_app	Deye Cloud / Bluetooth app

Protection

cell_balancing	yes - balancing solutions with triple auxiliary power design
integrated_breakers_fuses	UNKNOWN
over_current	yes
over_temperature	yes
over_voltage	yes
thermal_runaway_measures	aerosol fire extinguishing supported
under_voltage	yes

Certifications

emc	[]
grid_codes	[]
other	[]
regional	['CE']
safety	['IEC 62619', 'IEC 62040']
transport	['UN38.3']

Warranty & service

cycle_life	>=6000 (25 C +/- 2 C, 0.5C/0.5C, EOL 70%)
design_life_years	UNKNOWN
round_trip_efficiency	90% Deye BOS-B Pro-A3 Datasheet — datasheet, 'Round-trip Efficiency 90%'
standard_years	10

Packaging & logistics

gross_weight_kg	UNKNOWN (system 758-2240 kg)
transport_restrictions	UN38.3 (UN3480 Class 9 lithium battery)

Documents

datasheet Deye BOS-B Pro-A3 (AS, AF, AU, EU, LATAM) product page rev UNKNOWN

datasheet Deye BOS-B Pro-A3 Datasheet rev UNKNOWN

user-manual {# Located but never retrieved: listed, but deliberately not linked, and it backs no stored value. #} BOS-B Pro-A3 User Manual V07 — located, not retrieved rev V07

Recorded conflicts

usable_energy_kwh / recommended DoD Review required

231.48 kWh usable, 'Recommended DoD 5% ~ 85%' (i.e. 80% window) — BOS-B Pro-A3 datasheet

231.51 kWh usable at a 'recommended 90% DoD' — deye.com BOS-B Pro-A3 product page

the marketing page states a 90% DoD while the datasheet states a 5-85% SOC window; 231.5/257.2 = 90%, so the datasheet's 5-85% row and its usable-energy row are themselves inconsistent

usable_energy_kwh / recommended DoD Review required

231.48 kWh usable, 'Recommended DoD 5% ~ 85%' (i.e. 80% window) — BOS-B Pro-A3 datasheet

231.51 kWh usable at a 'recommended 90% DoD' — deye.com BOS-B Pro-A3 product page

the marketing page states a 90% DoD while the datasheet states a 5-85% SOC window; 231.5/257.2 = 90%, so the datasheet's 5-85% row and its usable-energy row are themselves inconsistent

Additional documented parameters

Recorded verbatim from the source; no schema field exists for these yet.

Recommended DoD	5% ~ 85%
Round-trip Efficiency	90%
STS seamless transfer	<= 20 ms