Using a car battery charger to power Riden RD6006

[bikeseat]

I have this car battery charger: https://www.amazon.com/dp/B094VQ88X2

It outputs 10A @ 12V & 5A @ 24V

I'd like to use it to provide power to a Riden RD6006. https://www.aliexpress.us/item/2255800096237178.html

Is there a possibility this could damage the RD6006? I've read elsewhere about car chargers outputting "dirty" (I'm assuming that means inconsistent voltage or spikes?) dc that could damage devices that prefer a steady voltage.

[wasedadoc]

Some of those "smart" chargers do not output constantly.  They switch the output on for a while, then turn it off and measure the battery voltage.  Then repeat.

Also the ones with a mode that claims to revive dead batteries usually apply voltage pulses significantly higher than 14 volts.

If you have a scope and suitable dummy load (eg a headlamp bulb) I would test before trying on the Riden.

[Benta]

Why on earth would you try to power a 360 W charger from a 120 W charger?

[wasedadoc]

And I expect the charger will not start at all unless it senses external voltage (normally from the battery to be charged) on the charger's output terminals.

[inse]

I have a similar one and it would not even start on a deep discharged battery.
All the “intelligence“ avert using it for anything other than charging.

[CaptDon]

Don't do it!!!! Those chargers are unpredictable, besides that the open circuit voltage could be insane, like up to 18VDC maybe more!

[Phil1977]

Bad news is that the charger really is no good power supply.

Good news is that power bricks that do better are really not expensive. With e.g. a 36V/10A supply like this

https://www.aliexpress.us/item/1005005626231303.html

you get a really cheap and flexible power supply.


Just be prepared for lots of noise and some danger of something blowing up. I personally use such a combination as a Li-Ion charger from time to time, but never unsupervised. And I connected the (-) output of the mains supply to PE so that an insulation failure in the mains supply trips the RCD. I don't know if that´s possible in your application, but I recommend it if the output does not need to be floating.