GAMMATRONIX 12v LED Battery level Charge monitor E

In stock
can be shipped within 1 days

Price plus VAT, plus delivery

'E' Monitor Installation Instructions - Download


'E' Monitor Information Leaflet - Download


Customers outside of the UK : Please see the note on import taxes on the Homepage


Integrated LED Battery charge / level indicator 12v Model


Good for any 12v battery (Lead-Acid, Gel or Fibre mat) where you want to monitor charging and voltage levels between the ranges specified in the tables below.


Hundreds of voltage monitors sold! Buyers comments for our range of monitors:

·         Must be good as this is my second one. 1 for the bike & 1 for the microlight.

·         Next day delivery, fantastic service.

·         Good service. Communication Excellent. Good product. Informative Instructions

·         great little gadget

·         Very fast delivery. Very Helpful. Nice & compact - would recommend

·         Good company, honest, fast response. Good to do business with.

·         excellent Item , really well made , good communication recommended

·         Damn fine bit of kit ! Thank you.

·         super fast delivery working perfectly - recommended Thanks

·         Excellent product, comprehensive instructions, fitted and working no problems


Check the specification!...............

  • Protects and warns  against Undercharging, Overcharging, and 'flat' batteries.
  • Integrated tri colour (Red, Green, Yellow)  10mm LED and microprocessor assembly.
  • Just 29mm behind control panel.
  • Single 14mm hole required for mounting.
  • 10mm tri-colour LED indication of your battery level or charging state.
  • Voltage : 6v or 12v DC   dependent on model.
  • Unit will operate down to 3.7v.
  • Power Consumption : 10mA nominal.
  • Internally PTC fused (self resetting) - don't risk your system wiring with an unfused unit!
  • Reverse voltage protected. Try connecting it up backwards, you can't break it!
  • Internal 'watchdog' makes sure the unit can never crash and is always reliable.
  • RC integrated voltage measurement input.
  • Multiple oversampling - unit takes 10+ readings to obtain greatest accuracy.
  • Built in hysteresis to prevent 'strobing LED' when unit is at changeover point.
  • Display LED updates 10 times each and every second.
  • Can be set at installation to operate over one of TWO ranges.
  • Supplied with fitted connection leads.
  • Supplied with comprehensive instructions.


The Details...............


Its annoying when your battery goes flat without warning. Some vehicles, such as older motorcycles, dont even warn you if your alternator has failed. You run on battery until the lights get dim, engine misfires and everything stops. With this neat little device, you get a nice clear warning that something is wrong. On the other hand, you might just want to know how much juice is left in a battery powering a system that has no charging facility.


This versatile unit can be used wherever you have a 12v or 6v (according to model) lead-acid battery or charging system. Perhaps your bike, car, caravan, camper or boat, or that battery you have to power the lights in your shed can go flat on you without warning, or you would like some idea of how much juice you have left?


Our battery / charge monitor device is FLEXIBLE so you can use it to tell you if your battery is charging (working alternator!), or, if you want a simple way of finding out how much is left in your battery, the tri-colour LED will illuminate in different colours, and even flash to tell you the 'current' situation. Simply set the link on the rear of the unit to set operating mode at installation time.


The large 10mm green/red/yellow/flashing LED is built into a black mounting bezel, with just two wires you connect into your electrical system. One to battery positive, one to negative. We couldnt have made it simpler.


The tables below show the operating range of the unit, depending on the mode set :


The 10mm LED indicator will signal at the following levels :


Battery Charging Indicator Mode (No Link Fitted)



Battery Level Indicator Mode (Link Fitted)



Buy with confidence, from a UK Limited Company. We have a no arguments return guarantee.


Explore our website further for other battery monitor models.


Browse this category: Single LED Voltage Monitors