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BG18 Battery Guard - 18A 12/24V

  (1 Review)
Price:  £35.86   (£29.88 Exc. VAT)List Price:  £53.78

Product code:  P01122



In stock

Female Blade Terminals - Fully Insulated - 3.0 - 6.0mm▓áCable (Yellow)Female Blade Terminals - Fully Insulated - 3.0 - 6.0mm▓áCable (Yellow)

Discharging your battery to very low levels can irreversibly degrade its performance and reduce its lifespan by weakening its ability to hold charge and reducing the no. of charge/discharge cycles available. This 18A Samlex battery guard prevents over-discharge by cutting the power to to the appliances once the voltage drops to a user-selectable level, so preventing further discharging of the battery. It also cuts power once the voltage rises to a certain pre-set level to protect appliances connected to your battery from potential damage caused by an over-voltage situation (e.g. faulty alternator or charger).

There are a number of pre-programmed low voltage thresholds that can be selected to suit your application and the battery guard will then automatically cut power at that threshold to preserve the life of your battery. It automatically detects the battery voltage (12 or 24V dc) and has very low voltage drop and standby current draw.


  • Extends battery life and prevents damage
  • Guards against excessive discharge and over-voltage by disconnecting battery
  • Auto-detects battery voltage (12/24V)
  • 10 programmable voltage thresholds
  • Low current consumption
  • Low voltage drop

It is recommended that the battery guard be installed in between the battery and a fuse/distribution box, as close as possible to the battery.

Suitable for batteries used in caravans, motorhomes, campervans, boats, off-road, industrial and commercial vehicles with a current draw from the battery up to 18A max.

  • Max. continuous current: 18A
  • Shut-down current: 25A
  • Nominal voltage rating: 12 or 24V dc (detects 8 - 35V dc)
  • Shut-down voltage: 16V (for 12V operation), 32V (for 24V operation)
  • Voltage drop: 0.1V @ 18A
  • Current consumption: 4mA (2mA when in under/over voltage mode or OFF)
  • Connections: 4 x 6.3mm male blades.
  • Mounting: Cable ties
  • Weight: 0.012kg
  • Overall dimensions: 60(L) x 20 (W) x 5 (H) mm

Part Number:  BG18

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Monday, 30 January 2017  | 

It came and it works.