May 4, 20205 yr The quality of the battery doesn’t affect the motors power does it? Yes. What matters for the power you get out of it is the ability of the battery to provide current (amps) without the voltage dropping too much. And for your hill/load, the ability to continue doing it over an extended period. I can't see specs for those hoverboard batteries that mentions the current capability. The capacity is 4.4ah each (13.2 overall) which indicates how much it can deliver overall, but that doesn't say how fast it can deliver it. That should (depending on cell quality) be enough for many uses, but maybe you need a little more.
May 4, 20205 yr Author https://m.n11.com/smart-balance-hoverboard-ginger-smart-scooter-samsung-batarya-pil-P118107075?gclid=EAIaIQobChMI1t_IupGa6QIVBrDtCh0fgwBCEAQYBCABEgLsufD_BwE&gclsrc=aw.ds
May 4, 20205 yr Author The three batteries I have are these ones and I think I bought from this site. I don’t know if you can read Turkish. I certainly cannot! My boyfriend is an electrician and assured me it would work and it does! But maybe I could take his voltage testing machine on my next bike ride and check it’s working to full capacity as you say. I wonder how I would do that? Maybe I could make a diy rolling road with a steep incline!
May 4, 20205 yr It will work, but maybe not to the full. If he's an electrician he can rig it up with both a voltmeter (range 32 to 42 volts) to see the voltage at the battery terminals and an ammeter to see the current draw (maybe up to 20 amps) while you are riding up the hill that will give a good idea. Your comment earlier The battery symbol didn’t go down one notch. is a good sign that the battery is coping; it is probably a (rather course) voltmeter. Did it stay at full all the way, or did it drop while riding but return to full at the end of the ride, or didn't you notice?
May 4, 20205 yr Author It will work, but maybe not to the full. If he's an electrician he can rig it up with both a voltmeter (range 32 to 42 volts) to see the voltage at the battery terminals and an ammeter to see the current draw (maybe up to 20 amps) while you are riding up the hill that will give a good idea. Your comment earlier The battery symbol didn’t go down one notch. is a good sign that the battery is coping; it is probably a (rather course) voltmeter. Did it stay at full all the way, or did it drop while riding but return to full at the end of the ride, or didn't you notice? Literally just been on a ride and it dropped one bar then almost instantly went back up again. It struck me as strange but what do I know!
May 4, 20205 yr it's called battery sag. When you ride up a steep hill, the motor asks more of the battery causing its voltage to drop more than before. When you get back to flat road, the motor reduces its demand, the battery recovers. If the voltage drops too low (below 31V), the motor will cut out. Don't worry about it until you are on the last one bar or two, then you have to help the motor a bit more to reduce its demand on the battery and avoid the motor cutting out.
March 29, 20224 yr Author Hello again! It's nearly 2 years since I started this thread so I won't be surprised if no one replies but I am giving it a go! I have had another child so I will be carrying an extra 11kg plus weight of bike seat up the mountain! I have been messing about with grins ebike calculator and just a normal bike calculator online and going through my very rough calculations i think if I put a 30 tooth cog at the front and a 52 tooth cog at the back I can easily get up the mountain. My question is...how do I do this? I have seen adapters for the front cog for the bafang. Presumably this is so you can just buy any standard bike chain ring and attach? I have also seen a double cog bafang chain ring (not sure if I fancy it or not though. For the back I have seen obviously full cassettes. But I was wondering if I could just buy one big cog that attaches to the back of my current cassette? Then I would need a new chain I think wouldn't I? As you can see. I am a bit clueless. I am also in Turkey right now so getting things posted is tricky. Any help is greatly appreciated!
March 29, 20224 yr Re the OP and the beer, drink it before you set off then you don't have to carry it up the mountain. I haul a trailer full of shopping etc up to my house with a bbs01b, a 42t front cog and 34t rear lowest cog no problem.
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