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I have semi permanently installed a Blue Smart IP65 12v 25A 230V charger in my caravan. When on mains hook up with the charger connected too the battery, what is the recommended way to use the Blue Smart to supply 12v to the ‘van. Should I leave it in charger mode or switch it to power supply mode and set the voltage to, say, 13.8v?
The Blue Smart battery chargers have the possibility to work as a stable voltage supply with limited current. In your case 25A continuous. Handy when the battery is dead, or if there is no battery.
The stable voltage supply is not ment to be used when a battery is connected, and will be charged. The maximum and continuous available current is not suitable to safely charge a battery.
In this case you need to set the Blue Smart charger to 'charge' function with the correct charging settings.
Thanks Theo,
So, to clarify, in my scenario, connected to an external 230v supply, with the battery connected to the charger, should I just leave the charger in charge mode and draw 12v from the connected battery? I assume this is how a normal caravan power supply system works?
Yes, no need to set it to power supply, it will drop to float voltage when the battery is full and charge as needed. You'll probably need to second guess this with the rebulk current setting.
If you do set to to power supply, set voltage to float value, not absorption or higher.
