Battery charger to power 12V DC appliances

eaca

New Member
Joined
Sep 29, 2021
Messages
1
I have a van with DC appliances (LED lights, fridge, water pump, bed lift) that are wired to a fuse block, but the battery/solar system needs to be completed (waiting on parts). In the meantime, can I connect a 10A or 12A Battery Charger (that plugs into an AC outlet) to the fuse block to power my devices?
 

NVS

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Sep 14, 2021
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97
You will need to have it connected to a battery. There is to much AC ripple in just a car battery charger alone. You could use a filtered dc power supply.
 

pierre

Somewhere down South
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Dec 21, 2019
Messages
841
Depends on the type of charger. The Victron Blue Smart charger can be set to charger or power supply mode.
 

BobR

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Jan 4, 2021
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138
I have a van with DC appliances (LED lights, fridge, water pump, bed lift) that are wired to a fuse block, but the battery/solar system needs to be completed (waiting on parts). In the meantime, can I connect a 10A or 12A Battery Charger (that plugs into an AC outlet) to the fuse block to power my devices?
Something like this will work. They are about $120.00. for another $20. you can get the IQ attachment that turns them into a smart charger. https://www.iotaengineering.com/pro...or-dc-load-operation-and-12v-battery-charging https://www.iotaengineering.com/pro...ls-to-use-with-lithium-ion-batteries-with-bms
 

circus

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Jul 8, 2021
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can I connect a 10A or 12A Battery Charger... to the fuse block to power my devices?
Same as when I blew my headlight bulbs hooking up my old Schumacher battery charger to a dead battery then turning on the headlights. I think the charger needed a battery for either voltage regulation or as a buffer.
 

SamValiant

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May 14, 2020
Messages
23
Are you sure 12a will be enough? Either way best to use a PSU, for instance a cheap bench power supply is a useful thing to have anyway and can do the job depending on its current limit. Just be sure to set it to 12v to be safe, battery chargers can output upto 16v hence why things can blow. Headlight bulbs can generally take upto 14.4v or so.
 
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