Thanks for that info. I very rarely wind up with a low battery. I think the lowest it's ever gotten is about 25%. I'm going to give one of these a try - https://www.amazon.com/gp/product/B08D9CJKTX/ I definitely want to make use of the built-in battery for my lighting. I'll probably just cut off and reuse the little 2-pin connector from the stock headlight, though I've got some spare male+female ends like that on the way so I can make use of the 48v for any other accessories I want to try out. I tested the voltage into the headlight/taillight, they're getting the full 48v from the battery.