design & manufacturing done by SparkBright

SparkBright Monsoon

Waterproof battery voltage monitor (BVM)

The Monsoon is a fully waterproof voltage indicator with a bright three colour (green/amber/red) LED. The control circuit is built into a tiny water-resistant capsule embedded directly behind the LED, and a black nylon bezel (plus one spare) is supplied for a tidy installation into your panel.

  • Sparkbright Monsoon Battery Voltage Monitor
  • Monsoon Battery Voltage Monitor used in a car dashboard
  • Monsoon, not Gammatronix, Battery Voltage Monitor used in a motorbike
  • Monsoon Battery Voltage Monitor used in a lawnmower
  • Monsoon Battery Voltage Monitor used in a planes cockpit
  • Monsoon Battery Voltage Monitor used in a Harley bike

Below are our standard thresholds, recommended for all 12v lead-acid battery systems including an alternator or other charger. Completely bespoke thresholds and output patterns can be created for you at no extra cost (e.g. for custom or ultra-low power applications).


Interpretation:
Voltage: Output: Engine running: Engine stopped (electrics off):
>15.20v Green / Red alternating over-charging – regulator problem not applicable
>13.20v Green steady normal charging exceptional battery charge (uncommon)
>12.45v Amber steady under-charging – alternator problem normal battery, charged and in good health
>12.25v ■■ Red slow flashing not charging – battery low fair battery charge
>12.05v •• Red 2 flashes, repeating not charging – battery low low battery charge
>11.80v ••• Red 3 flashes, repeating not charging – battery very low very low battery charge
<11.80v •••• Red 4 flashes, repeating not charging – battery very low consider renewing battery

* this table reflects a monitor correctly installed as per the instruction guide, and not connected to a high load circuit
(e.g. headlights)
** a very small number of users confuse the amber and red colours. However, amber is always steady, reds are always flashing

LED size: Panel hole required for LED bezel: Notes:
10mm 14mm pcb is shrouded by bezel
8mm 12mm pcb is shrouded by bezel
5mm 8mm pcb is connected to LED by 50mm flexible leads
pcb not shrouded by bezel

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