Backup Battery
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@D-Wave it's not in the manual, it's in the specs of the battery pack :) each lipo are not always at their top, so they guarantee a minimal capacity and a generaly observed max one, but we are all the time in the middle.
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Im surprised they still have yet to answer on the battery issue.
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Have you tried contacting them directly? They're probably too busy to read all the forum posts just in case someone wants their input. That's why they have support contacts.
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@badcheese I don't expect them to read all of the forum threads, but you'd think they'd at least read the ones they've been tagged in, which I did. This would be a good fire to put out, pun intended.
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Fire? Problem? I see no issue to address here. The battery works as advertised, correct?
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@Angryviking It's not about how it's been advertised to WORK, it's about what it's been advertised to BE.
There are significant differences between Lithium Ion and Lithium Iron Phosphate batteries (LiFePO4 are non-toxic and non-hazardous, have a lower discharge rate while idle, have a longer life, don't heat up while charging or while in use so are less likely to catch fire, basically just a much more modern energy source), so if the batteries in the Onewheel are not what they're advertised to be, that would be pretty serious. And illegal.
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and with what Greck said, it would be a huge lawsuit to boot due to false advertising.
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Might want to get your facts and terminology straight.
LiFePO4 is a type of lithium ion. The iron/phosphate being the specific ion. The more unstable but powerful batterise people refer to as lithium ion is the LiCoO2. Both contains lithium and an ion. The difference is the type of ion. (Cobalt oxide)
LiFePO4 has 3.65v/cell max charge. 16s battery of the one wheel charges to 16x3.65=58.4v (check your charger)
If it were LiCoO2, max voltage per cell is 4.2v. 16s would yield 67.2v
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@tomtnt Oh man... you're totally right! That's exactly the info we were hoping FM would jump in and give us, so thanks for clearing this up!
I'm no battery expert, and I had been doing all my research on the subject through articles I found with a search for "Lithium Ion vs Lithium Iron Phosphate," and all of these seem to actually be comparing LiCoO2 to LiFePO4 (exactly as you said). But on the Wikipedia page for Lithium iron phosphate battery, it says:
"The lithium iron phosphate a type of rechargeable battery, specifically a lithium-ion battery, which uses LiFePO4 as a cathode material."
And it goes on to say just what you said, that it's more stable and safer than the LiCoO2 battery (which apparently is what most people are referring to when they say "Lithium-ion")
https://en.wikipedia.org/wiki/Lithium_iron_phosphate_battery
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LiFePo4 has a nominal charge of 3.2V, which is lower than the other Lithium batteries.
4x 3.2 = 12.8 V, so if it's 4 cells and labeled 12.8 V, then it's a LiFePo4.
And you always charge batteries with a higher voltage than their nominal voltage.
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@Count Did you try to assemble the OW again to see if it works? Or need to recalibrate or something like that?
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@Sailingmuffin battery would probably be no less than 300 i would assume..... I mean look at the new segway thing is selling for half the price of the one wheel. 800 bucks 14 mile range. I think in the later generations we will see a price drop probably gen 3.
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I wonder if something like this https://www.indiegogo.com/projects/omnicharge-smart-compact-portable-power-bank-smartphone-powerbank#/ would work if you brought a charger with you as well.
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@RLY said in Backup Battery:
I wonder if something like this https://www.indiegogo.com/projects/omnicharge-smart-compact-portable-power-bank-smartphone-powerbank#/ would work if you brought a charger with you as well.
That looks awesome, anybody know how much one of these could charge a OW?
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I just ordered one, so if it comes, I'll let everyone know how it goes.
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@RLY it will not work....the max output is 100w while the onewheel charger require around 350w. So the powerbank will go in to failsafe mode and disconnect the AC output.
I have the same issue with a powerbank which have a 120w AC output. even with a low speed OW charger that throw out 2amp rather than 3.5amp, it's still too much.
we would need more power than that.
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@Tartopom Ok - thanks. I guess I can just use it to charge my phones/laptops/etc. then.
I learned about the Indiegogo project through an ad in my Facebook feed - one of the comments was something to the effect of, "I don't care at all about this stupid project unless it can power my Boosted Board!"
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Yes exactly... with mine I can charge my evolve carbon gt, but it's limit...
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Anyone has exact photo of the OneWheel battery? Need to ship it overseas, the Shipping agent ask battery specs or Sticker photo.
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@iguanawear I saw this linked a while back and bookmarked it regarding battery specs.. http://community.onewheel.com/uploads/files/1467232074750-sds-high-power-lithium-ion-cell_sf000003_rev-22-2-8-2-1-6.pdf
