Separate electrical system ?

[RebelPrinter]

Hey guys. I am thinking of building a separate/parallel electrical system for a bike project i am playing with.

What it will be powering is LED headlight/tail light/brake light/turn signals/alarm, as well as a motorcycle handlebar-mount radio. Basically what would normally be run off of the accessories feed from the controller.

Battery would be a SLA (condo rules reasons).

I am thinking of using a 12v/6w generator like this https://amzn.to/3AN1Uww plus one or 2 trickle chargers like this https://amzn.to/3R62pac. to charge the battery. I realize it's a diminishing return, the system is just meant to extend time, not make it indefinite. If I get 2-3 hours run time (mostly radio and brake light) out of the battery with that load before a wall-charge I'll be happy.

I am using steel filing boxes as saddlebags and the system has to fit inside one of them https://amzn.to/3R62pac

Do I need a charge controller, and what kind ? And can anybody suggest what Ah battery would do the job ?

 

[spinningmagnets]

consider the option of adding a DC/DC step-down converter. They can be had for roughly $40, and they convert pack voltage to 12V.

Inputs can be 36V-60V, plus they are typically potted for waterproofing.

Sailboats have 12V, 24V, and 48V solar panels, and there are many affordable 12V accessories that they use, so it shouldn't be hard to find.

 

[Chalo]

I don't understand what you're trying to accomplish, but once you have an EV with a big battery pack, it's best to use it for whatever electrical needs you have. Spinningmagnets is right about using a DC-DC converter if you need 12V for accessories.

Battery would be a SLA (condo rules reasons).

What rules are these?

Also, playing noise while you're riding diminishes your situational awareness and annoys other people. Leave that for your own personal space.