Headlight

[CanyonMan]

I just finished my latest build using the Bafang M625. While this unit comes with a headlight it is not very good. I am looking for a new light that I can hardwire in. I would like a light that will work at full power and give plenty of light as I ride at night quite often. Does anyone know what voltage the factory light operate on? I don't want to buy a 12v light and find out the power supply is 5v. Thanks for any help.
Canyon

 

[Gionnirocket]

6v/500ma...so you'll be limited to the total watt output.
If you need more light you can tap the battery and add a switch or use the display switch to drive a relay.

 

[tomjasz]

useless as headlight. Better suited for adding a running light.
For decent lighting find the German standard bike headlights.
STVZ0


"StVZO bike lights are designed to conform to German Road Traffic Licensing Regulations, with a beam shaped to avoid dazzling other road users, but the safety standard may have benefits elsewhere in the world, too.

StVZO-compliant bike lights differ from other lights on the market in that they have a cut-off, which keeps the beam focused directly on the road ahead and, in theory, out of the eyes of other road users when cycling at night."

 

[6zfshdb]

I ran into this issue when I looked at replacing my OEM bike light. In my case, I was limited by the current the fine gauge bike wiring would supply. Rather than tap the bike battery directly, I opted for a handlebar mount light with it's own internal rechargeable battery. The idea is to supplement the OEM light, rather than replace it.

I chose the Trail Evo:

Trail Evo Bike Light

Trail Evo Bike Light with wide beam pattern, USB-C charging, and long battery life. Perfect MTB bike light for night trail riding. Made in the USA.

www.outboundlighting.com

Big $$, yes, but there are many other less expensive models on the market that will provide excellent light for the duration of most night rides. Heck, you have to charge your bike battery anyway, why not charge your headlight at the same time.

These easily removeable, self powered lights also serve as hand held trouble lights for making nighttime repairs, or other off bike uses.

 

[Gionnirocket]

I ran into this issue when I looked at replacing my OEM bike light. In my case, I was limited by the current the fine gauge bike wiring would supply. Rather than tap the bike battery directly, I opted for a handlebar mount light with it's own internal rechargeable battery. The idea is to supplement the OEM light, rather than replace it.

I chose the Trail Evo:

Trail Evo Bike Light

Trail Evo Bike Light with wide beam pattern, USB-C charging, and long battery life. Perfect MTB bike light for night trail riding. Made in the USA.

www.outboundlighting.com

Big $$, yes, but there are many other less expensive models on the market that will provide excellent light for the duration of most night rides. Heck, you have to charge your bike battery anyway, why not charge your headlight at the same time.

These easily removeable, self powered lights also serve as hand held trouble lights for making nighttime repairs, or other off bike uses.

I don't ride much at all at night... but I ended tapping the battery and still using a stock lower wattage head/tail light set. My reason is that I wanted separate switches from the display as I wanted to drive a horn as well.
I wired it so the horn flashes the light... but the light still works independently.
I also added a separate rechargeable as you suggest... just because