Most helpful positive review
79 of 79 people found the following review helpful
The Perfect Trickle/Maintenance Charger - Detailed Test Results
on 19 September 2013
This charger is perfect for battery maintenance and was tested as below:
Current then stays roughly constant up to the cut-off point at 14.15V.
This is below the gassing voltage so will not damage the battery.
Charging Cut-off Voltage 14.15V
Charging Restart Voltage 12.98V
Note: This charger does not give a constant voltage float charge,
instead it charges the battery to the Cut-off voltage, waits for it to
drop back to the Restart voltage and then repeats the cycle. This is
a perfect alternative and ensures the battery is always fully charged.
Mains Power Consumption:
Rated Power Quoted is 30W, presumably at 1.5A and 12V output.
Measured Power while topping up a charged battery is 14W approx.
Measured Power when Green "Charged" LED is ON is under 4W.
Average Power consumed 7W (approx. 1/3 charging and 2/3 not charging)
In a Boat Marina setting where power may fail in winter it is critical
that the charger does not discharge the battery significantly. Load on
battery when mains disconnected:
Current From Battery when Green "Charged" LED is ON is 40mA.
This stops when the voltage drops to 12.98V which is above the normal
fully charged voltage so will not cause significant discharging.
Current From Battery when Green "Charged" LED is OFF is only 0.6mA !!
Conclusions are that this charger is perfect for long term battery
maintenance and can handle mains failure without discharge unlike
many other chargers. It also has very low mains power consumption.