eBikes / eScooter Power Calculator
So recently I was speaking with a long time friend John about my scooter mods and was joking about starting a scooter club and racing league. First thigns first, I need to get a few more scooters from my buddy Frankie Toyota. Frankie is awesome. He has a yard over in Bushwick (Brooklyn in da House!) and collects gas-powered items, cars, motorcycles, etc. Whenever he runs into electric he gives me a call.
So Frankie gave me a call last week and told me that he has a few scooters he wants to throw my way. I need to get over there and pick them up. Anyways I was speaking with John and we were BS'ing about crap and I was mentioning that I need to start working on Scooter-X again as I stopped for a long period and I really want to get this machine up and running.
He asked wwhat the big deal was about getting it working and I was telling him that I want to convert the Lead-Acid (or SLA) over to Lithium without major risk that you hear about in the news. I have solar power on my shed so I can charge the batteries that way. I was thinking about using 2-12V tool batteries in series giving me 24V (called 2S as in 2 in the series). Then I would need to take that group and wire more groups like that together in parallel to increase the Amp-Hours (AH). So depending on the batteries it could be 2 groups (2S2P) or 3 groups (2S3P). I wrote about the capcity concepts here and here.
As I was explaining these to John, it occured to me rather than doing the math on the spot each time, let me build a calculator. So I did so in Excel, what a waste. I would rather have a web-based version. So here it is!
|Max Payload (weight of rider+extra)||lbs|
|Weight of scooter/bike (plus batteries)||lbs|
|Hours to ride||hours|
|Additional power (torque) in percentage||%|
|Battery Voltage||Torque Force||Required HP||Torque Power||Required Motor Power||Battery Capacity|