So far, none of the aftermarket LED headlight bulb retrofits are DOT approved. As such, the resulting beam pattern may or may not equal the original beam pattern. If you do go the LED route, choose wisely and verify the resulting beam pattern before and after. You don’t want to blind other drivers, which I’m seeing more and more now that people are buying cheaply engineered retrofit kits online.
I agree that good quality LED kits will provide a stable light output under the suboptimal voltages the LEAF runs the stock halogen headlights at. The best output from the stock halogens is during the first few minutes of starting the car or when running the wipers... the only time the headlights see a proper 14v supply and turn nice and bright white as the bulb manufacturer intended. The rest of the time the sag down to a dimmed yellow on 12.5 volts or so.
2016 LEAF SV