40290310 Front
40290310 Back
40290310 All
40290310 Front
40290310 Back
40290310 All

WBM Battery Monitor Basic

Where to buy
  • The window to your battery
  • Accurate energy monitoring of one or two battery banks
  • No sudden empty battery: precise ‘time remaining’ indicator (hrs, min)
  • Calculation of ampere hours consumed
  • State of charge indicator in %
  • Various programmable alarms
  • Easy to use, plug and play installation

Product specifications

40290310 WBM Battery Monitor BASIC
Shunt dimensions Footprint 45x87mm
Shunt dimensions height 17mm(base)/35mm (high current fasteners)
Shunt dimensions weight 145 gr
Display dimensions: Front panel Ø 64.0 mm
Display dimensions: Body diameter Ø 52 mm
Display dimensions: Total depth 79 mm
Display weight 95 gr
Supply voltage range 9.35 VDC
Supply current: @Vin=12VDC 9mA
Input voltage range (auxiliary battery) 2.35 VDC
Input voltage range (main battery) 0.35 VDC
Input current range -999..+999A
Battery capacity range 20..999 Ah
Operating temperature range -20..+50°C
Readout resolution:Voltage ± 0.1V (0..35V)
Readout resolution:Current (0..100A) ± 0.1A
Readout resolution:Current (100..999A) ± 1A
Readout resolution: Capacity range (0..100Ah) ± 0.1Ah
Readout resolution: Capacity range (100..999Ah) ± 1Ah
Readout resolution: state-of-charge (0..100%) ± 0.1%
Readout resolution: time remaining (0..24hrs) -
Readout resolution: time remaining (24..240hrs) ± 0.01 Ah..10 Ah (variable)
Readout resolution: temperature (-20..+50°C) ± 0.01 W..1 kW (variable)
Voltage measurement accuracy ± 0.3%
Current measurement accuracy ± 0.4%
Material of housing ABS
Color RAL 7021 black/ grey
Protection class IP20 (frontpanel only IP65)
Standards EN61000-6-3 (EN55022), EN61000-6-2 (EN61000-2/3/4, EN61000-4- 3), LVD 73/23/EEC (EN60335-1), e4-95/54/EC, RoHS 2002/95/EC
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WhisperPower develops and manufactures products and systems that meet the entire power needs of the marine, mobile or off-grid user.

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