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smallBMS NG

6. Specifications

smallBMS NG

Operating voltage (Vbat)

8 - 70 Vdc

Power supply cable and fuse (not supplied)

Recommended fuse size 0.3 A - 2.5 A, dependent on devices connected to Load disconnect and pre-alarm output

Current consumption, remote on

3mA (excluding Load and Charge disconnect output current)

Current consumption, low cell voltage

1.2 mA

Current consumption, remote off

1.2 mA

Load disconnect output

Normally high (Vbat – 0.1 V)

Source max current: 1 A (not short circuit protected)

Sink current: 0 A (output free-floating)

Charge disconnect output

Normally high (Vbat – 0.1 V)

Source max current: 500 mA (not short circuit protected)

Sink current: 0 A (output free-floating)

Pre-alarm output

Normally free-floating (low)

In case of alarm: output voltage Vbat -0.1 V

Max output current: 500 mA (not short circuit protected)

Remote on/off:

Remote L and Remote H

Use modes:

  1. ON when the L and H terminals are interconnected

  2. ON when the L terminal is pulled to battery minus (V < 3.5 V)

  3. ON when the H terminal is high (2.9 V < VH < Vbat)

  4. OFF in all other conditions

GENERAL

Operating temperature range

-20 °C to +50 °C (0 - 120 °F)

Humidity

Max 95 % (non-condensing)

Protection, electronics

IP20

ENCLOSURE

Weight

0.1 kg

Dimensions (hxwxd)

106 x 42 x 23 mm

Material and colour

ABS, matt black

STANDARDS

Safety

EN 60950

Emission

EN 61000-6-3, EN 55014-1

Immunity

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

Automotive Directive

Regulation UN/ECE-R10 Rev.4 - pending