Knowledge Base › Battery Management Systems
Victron Energy smallBMS with pre-alarm
Official manufacturer GLOBAL verified Sept. 25, 2026
Identity
| category | battery_management_systems |
| manufacturer | Victron Energy B.V. disputed |
| model | smallBMS with pre-alarm |
| product_family | smallBMS |
| product_status | active |
| region | global |
| sku | BMS400100000 |
Electrical
| charge_disconnect_output | Normally high (Vbat - 0.6 V), source current limit: 10 mA |
| current_consumption_low_cell_voltage | 1.2 mA |
| current_consumption_remote_off | 1.2 mA |
| current_consumption_remote_on | 2.2 mA |
| load_disconnect_output | Normally high (Vbat - 0.1 V), source current limit: 1 A |
| official_product_url |
https://www.victronenergy.com/battery-management-systems/smallbms
smallBMS — Victron Energy product page
|
| operating_voltage_range_vdc | 8 - 70 VDC |
| pre_alarm_output | Normally free floating; maximum output current: 1 A |
| supported_system_voltages_v | 12, 24 or 48 V |
Physical / mechanical
| depth_mm | 23 |
| dimensions_h_w_d_mm | 106 x 42 x 23 |
| enclosure_material | ABS, matt black |
| height_mm | 106 |
| weight_kg | 0.1 |
| width_mm | 42 |
Installation
| max_batteries_supported | 20 |
| max_energy_storage | 84 kWh in a 12 V system and up to 102 kWh in a 24 V and 48 V system |
| series_parallel | 12 V, 24 V or 48 V via series/parallel configuration; maximum 20 batteries per system |
| supported_battery_types | Victron Energy Lithium Battery Smart batteries (LiFePO4, 12,8 V or 25,6 V) |
| typical_application | Small systems without inverter/chargers |
Environment
| operating_temperature | -20 to +50 °C |
| operating_temperature_max_c | 60.0 |
| operating_temperature_min_c | -25.0 |
| protection_class_ip | IP20 |
Interfaces & connectors
| bluetooth | — |
| bms_battery_connector | Victron BMS cable chain |
| remote_on_off | Yes (remote on input) |
| ve_bus | No - this BMS does not control inverter/chargers over VE.Bus |
| ve_can | — |
| ve_direct | — |
Protection
| charge_disconnect | Charge disconnect output, source current limit 10 mA |
| load_disconnect | Load disconnect output, source current limit 1 A |
| pre_alarm | Pre-alarm output, maximum output current 1 A (normally free floating) |
Certifications
| standards | ['UNKNOWN'] |
Warranty & service
| summary | — |
Documents
datasheet
smallBMS with pre-alarm
datasheet
smallBMS with pre-alarm - Datasheet
product_page
smallBMS — Victron Energy product page
Recorded conflicts
identity.manufacturer Review required
Victron Energy B.V. — stored value
Victron Energy — incoming package
Detected during import wave6-2026-09-batch03
identity.manufacturer Review required
Victron Energy B.V. — stored value
Victron Energy — incoming package
Detected during import v1-freeze-2026-09-batch04
identity.manufacturer Review required
Victron Energy B.V. — stored value
Victron Energy — incoming package
Detected during import v1-freeze-2026-09-batch04
identity.manufacturer Review required
Victron Energy B.V. — stored value
Victron Energy — incoming package
Detected during import system-topology-2026-09-batch03
identity.manufacturer Review required
Victron Energy B.V. — stored value
Victron Energy — incoming package
Detected during import anma-image-enrichment-2026-09-11
identity.manufacturer Review required
Victron Energy B.V. — stored value
Victron Energy — incoming package
Detected during import anma-image-enrichment-2026-09-11
Additional documented parameters
Recorded verbatim from the source; no schema field exists for these yet.
| Material | ABS, matt black |
| Maximum Energy Storage | 84 kWh in a 12 V system and up to 102 kWh in a 24 V and 48 V system |
| builder_completeness | partial |
| image_enrichment_pass | 2026-09-11 |