Here is a nice 48v to 12v DC/DC converter we recommend. Made by Victron.
It can function off of any 36v-52v e-bike battery, and provide an adjustable output voltage of 10-15v at up to 110w. Adjusted by the little screw on the bottom left.
It is well suited for use on e-bikes and trikes, even though it was originally designed for off grid solar systems. Though not completely waterproof, it still has an IP43 rating, and performs well when placed under a solar panel (= where there's airflow, but it won't get directly rained on). Can be easily mounted under the dashboard of an ELF.
This unit can function up to 110w output, which is perfect for not only charging your phone, but maybe a heated jacket as well. Maybe some LED light strips. Maybe a boom box. You get the idea.
The optional wiring kit (coming soon) provides Anderson PowerPole connectors, fuse + fuse holder, power switch, plus two 'cigarette plug' style 12v outlets.
- Anderson PowerPole connectors make it easy to quickly swap the unit in and out, in case you want to put it on a different bike, or troubleshoot your system.
- The fuse is a great idea for several reasons.
- power switch allows you to switch the unit off when not in use.
- Dual 12v cigarette style outlets. This can power a set of heated motorcycle jackets and pants for riding in super cold temperatures. You can also plug in a little, commonly available 12v DC to 120v AC inverter and charge a computer or other small 120v device if needed - even other e-bikes, if necessary.
Heated motorcycle clothing is the most efficient way to heat your body on an electric bike - heated motorcycle jackets use, on average, less than 25w per hour, while personal air heaters can use more than 20x as much.
