Hey everyone! I'm looking for some assistance with a project I'm working on. I want to use my 43V e-bike battery to power my 36V e-scooter. However, my e-bike battery fluctuates between 45V and 32V, while my scooter is quite sensitive and requires a stable 36V input. I've been searching high and low for a buck-boost converter that can convert the 45-32V range to a consistent 36V output, but I'm coming up empty. If anyone has a lead on such a converter or any advice, I'd be really grateful! Also, I should mention that it needs to handle at least 30 amps. Thanks a ton!
3 Answers
Why does your scooter require such a strict 36V? All batteries have varying outputs depending on their charge state, and it's likely both your scooter and e-bike run on 10S battery configurations. It might not be as strict on voltage as you think!
What model is your scooter? Most controllers are built to handle variations in battery voltage since all batteries have a nominal voltage range. I’ve seen plenty of 36V regulators available, but they might be pricier and not as common as other voltage types. Also, you should consider the amperage requirement of both your scooter and battery since that could be more crucial depending on how they interact.
You might want to look for a buck-boost converter like the 1500W/1200W DC-DC module that can handle 15-90V input to around 2.5-72V output at 50A. Just a heads-up, though: if you're considering the wiring modifications for constant current, double-check the specs because some require a minimum 20% step-down, which could leave you capped at around 34V. It's a bit surprising that your scooter is so picky; usually, they can handle a range of voltages since their original batteries don't output a constant voltage either.