USB Accessory Adapter (DC-DC Converter) (10-55V, 5V 3Amax)

Great to have the ability to charge off of my bike! Works great. I no longer need to woory about my powered tire inflator needing a charge.

Doesn't work

Only one of two ports worked. Same one on Amazon goes for $11 and has horrible reviews. Return is too much of a hassle. Going to find another alternative.

Perfect. Just plug-n-play to my second battery. Tucked everything into the 2nd battery bag.