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INSTALLATION OPTIONS / INSTRUCTIONS
Choose a location to install the charger, ideally somewhere cool and dry for best performance.
Under the bonnet will work, but try and maximise airflow around the charger, without too much
water. Excessive heat will lower the charger output. It is also advisable to place the charger as
close to the auxiliary battery as possible for best charging performance
Ensure the charger is securely mounted. This can be in any orientation, inverted, vertical or
horizontal, as required. If the unit is being installed in a harsh vibration area, like an engine bay,
consider mounting over small rubber or high density foam pads
Measure the distance from the starting battery to the charger; the distance between the charger
and the auxiliary battery; the distance between the solar panel output and the charger. Source
cable and terminations to suit. Matson recommends a minimum 10mm2 good quality twin-core
cable for this application.
Ensure ALL cabling meets specification and will not be exposed to excessive heat / moving parts
or abrasion
Connect the auxiliary battery to the charger – make sure polarity (+ & -) are correct
Connect the solar panels to the charger – make sure polarity (+ & -) are correct
Connect the main battery to the charger - make sure polarity (+ & -) are correct
It is recommended that a 25 Amp circuit breaker or fuse be installed between the main battery
and the charger, but is not essential
Make sure all connections are tight
Low or Variable Voltage Alternators
If the vehicle is fitted with a low voltage or variable voltage alternator, the ignition sensing wire
will need to be connected. This will allow the charger to continue to operate when it senses much
lower voltages (as low as 10.8V) from the main battery, because it can sense the engine running.
Using 2mm automotive cable, connect the small ignition cable from the back of the charger to
an ignition power source. This can be complicated and may require the assistance of an auto
electrician or qualified installer. Once the charger senses ignition power it will start charging.
