Smart BMS 12/200 is an all-in-one Battery Management system for Victron Lithium-Iron-Phosphate (LiFePO4) Smart Batteries. It has been specifically designed for 12V systems with a 12V alternator such as in vehicles and boats. It combines a Current Limiter, Battery Combiner and Battery Protector in a robust and compact solution and lets you safely connect any size 12V alternator (and starter battery), loads and chargers to Smart Lithium batteries.

The Smart BMS 12/200 monitors and protects each individual battery cell within the battery (or battery bank) and will disconnect the alternator, charge sources or DC loads in case of low battery cell voltage, high battery cell voltage or over temperature.

Battery Management system- The BMS connects to 12,8V Victron LiFePO4 (LFP) batteries. Up to 5 batteries may be connected in parallel. Can be used as a system on/off switch.

Starter battery Protection- This function is similar to that of a Cyrix Battery Combiner or Argo FET Battery Isolator. Current can flow to the LFP battery only if the input voltage (= voltage on the starter battery) exceeds 13V.

Alternator and battery protection- The input current is electronically limited to approximately 90% of the fuse rating.

Choosing the right fuse will:

A. Protect the LFP battery against excessive charge current (important in case of a low capacity LFP battery).

B. Protect the alternator against overload in case of a high capacity LFP battery bank (most 12V alternators will overheat and fail if running at maximum output during more than 5 minutes).

Load/battery charger output-input (Power Port SYSTEM+)- This Power Port can be used to either charge or discharge the LFP battery (i.e. via a charger, an inverter or inverter/charger) with a maximum continuous current of 200A in both directions.

-The Smart BMS will make sure that the battery discharge will cut-off in case of imminent cell under voltage.

-The Smart BMS will enable charging through this port, but no charge algorithm can be applied internally.

FEATURES

Li-ion battery protection- Excessive input voltage and transients are regulated down to a safe level. The Smart BMS will stop charging in case of cell over voltage or over temperature. It has three outputs, similar to the small BMS:

Load Disconnect output: The Load output is normally high and becomes free floating in case of imminent cell under voltage (default 2,8V/cell, adjustable on the battery between 2,6V and 2,8V per cell). Maximum current: 10mA.

Pre-Alarm output: The pre-alarm output can be used as warning when the battery voltage is low and it will trip shortly before the Load Disconnect output is disabled due to cell under voltage.

- The pre-alarm output may be used to drive a relay, LED or Buzzer. It can be configured as continuous or intermittent signal.

- The pre-alarm output is normally free floating and becomes high in case of imminent cell under voltage (default 3,1V/cell, adjustable on the battery between 2,85V and 3,15V per cell).

Charge disconnect output: The Charge disconnect output is normally high and becomes free floating in case of imminent cell over voltage or over temperature. Maximum current:10mA.

Remote on/off input- The remote on/off input controls the charging via the alternator. When off, charging via the alternator is disabled, while the BMS functionality will remain active allowing any loads and chargers to continue working regardless of the state of the remote input.

Ignition proof- No relays but MOSFET switches, and therefore, no sparks.

SPECIFICATIONS

Smart BMS 12V 200A specifications

Maximum continuous charge current

100A (with 125A fuse)

Maximum charge & discharge current

200A

Peak discharge current

400A

Input voltage to start charging

>13V

Load disconnect output:

Normally high (Vbat - 0.1V)Source current limit: 10mA (short circuit protected)Sink current: 0A (output free floating)

Charge disconnect output:

Normally high (Vbat - 0.1V)Source current limit: 10mA (short circuit protected)Sink current: 0A (output free floating)

Pre alarm output:

Normally free floatingHigh (Vbat) in case of alarm, max. 1A (not short circuit proof)

System on/off:Remote L & Remote H

Use modes of the system on/off:A: ON when the L & H terminal are interconnectedB: ON when the L terminal is pulled to battery minus (V<5V)C: ON when the H terminal is high (V<3V)D: OFF in all other conditions

GENERAL

Operating temperature range:

-40 to +60°C

Humidity, maximum / average

100% / 95>#/span###

Protection, electronics

IP65

DC power connection

DC connector battery minus

Fastoon female, 6.3mm

ENCLOSURE

Weight (kg)

Dimensions (HxWxD)

65 x 120 x 340mm

STANDARDS

Emission

EN 61000-6-3, EN 55014-1

Immunity

EN 61000-6-2 EN 61000-6-1 EN 55014-2

Automotive EMC Directive

ECE R10-5

WARRANTY

Victron Energy warrants its products to be free from defects in workmanship and materials for a period of: Batteries: 2-year limited warranty Li-ion batteries: 3-year limited warranty All other products: 5-year limited warranty.

NOTE:

The option of a 10-year limited warranty can only be applied during the actual purchase of the product.