Alan Ng Posted November 20, 2016 Share Posted November 20, 2016 Hi guys, i recently purchased a brand new 820wh msuperv3. However, when it is fully charged the wheel log app only shows 93%. Please tell me is this normal, or is there an error/fault with the battery? Link to comment Share on other sites More sharing options...
Hansolo Posted November 20, 2016 Share Posted November 20, 2016 Wich version of WheelLog? The last is 1.8 Link to comment Share on other sites More sharing options...
16bitSprite Posted November 20, 2016 Share Posted November 20, 2016 Same here. I'm guessing its normal if we are both getting it. Link to comment Share on other sites More sharing options...
Donafello Posted November 20, 2016 Share Posted November 20, 2016 3 hours ago, Alan Ng said: Hi guys, i recently purchased a brand new 820wh msuperv3. However, when it is fully charged the wheel log app only shows 93%. Please tell me is this normal, or is there an error/fault with the battery? If both of you are getting it I guess it is normal. Link to comment Share on other sites More sharing options...
Gimlet Posted November 20, 2016 Share Posted November 20, 2016 Sounds like good battery management to me as lithium batteries degrade very quickly when taken to, or even close to 100% or 0% charge. Link to comment Share on other sites More sharing options...
Donafello Posted November 21, 2016 Share Posted November 21, 2016 3 hours ago, Gimlet said: Sounds like good battery management to me as lithium batteries degrade very quickly when taken to, or even close to 100% or 0% charge. Thanks for your input. With so many people having very different opinions on battery management, can you give us your input. Mainly in regards to best charging practices and what's good to do and not do. Link to comment Share on other sites More sharing options...
Alan Ng Posted November 21, 2016 Author Share Posted November 21, 2016 Thanks guys for your inputs. Is jane here to clarify? Cause I upgraded from 680wh to 820wh, i dont want to be paying that difference and getting a faulty battery. Link to comment Share on other sites More sharing options...
Cerbera Posted November 21, 2016 Share Posted November 21, 2016 I just finished charging mine, so good time to test... Hmm. Nope- I get 100% once fully charged and balanced. CBR Link to comment Share on other sites More sharing options...
Hunka Hunka Burning Love Posted November 21, 2016 Share Posted November 21, 2016 How many times have you charged the battery? Maybe it has to do with needing to cycle the charge more before the battery reaches full capacity? Or maybe you need to charge it a little longer as maybe the BMS hasn't had a chance to balance the cells? I thought I recalled reading that these batteries need to be cycled a few times before they reach peak efficiency? Link to comment Share on other sites More sharing options...
US69 Posted November 21, 2016 Share Posted November 21, 2016 52 minutes ago, Hunka Hunka Burning Love said: I thought I recalled reading that these batteries need to be cycled a few times before they reach peak efficiency? This is a myth, which you can read much to often.... Lithium Ion cells are on 100% from there first full charge on... in this case i really would guess a problem -with the charger -with one of the BMS, perhaps not balancing anymore As both batterie packs on the V3 are connected directly with an extra wire (i guess for balancing, see my V3 review)) the defect of just one BMS would be enough.... i am also having wheellog and a V3 and do have a full 100% charge.... The further question would be to prove that only the wheellog app is showing 93%... What about 9bmetrics??? Perhaps a friend with such app can test? Link to comment Share on other sites More sharing options...
US69 Posted November 21, 2016 Share Posted November 21, 2016 8 hours ago, Gimlet said: Sounds like good battery management to me as lithium batteries degrade very quickly when taken to, or even close to 100% or 0% charge. Degrading on a brand new wheel? First degrading starts after about 30-50 -full- cycles... But most important: even after degrading you are able to charge the batteries up to 100%=67,2 volt! Degrading just reduces the amount of mah/wh you get out of the batteries...so you will not be able to get 820wh anymore.... Link to comment Share on other sites More sharing options...
zlymex Posted November 21, 2016 Share Posted November 21, 2016 93% of Wheellog display correspond to 65.3V(4.08V per cell), which is not normal. Apart from the charger or the battery, the internal A/D may be faulty. I recommend OP turns V3 on and start wheellog while the wheel is lying down, connect and disconnect the charger to see if there is any changes on the wheellog for battery level. If it shows 100% when plug-in, then the battery is faulty or out of balanced. If the reading is always 93%, then you need a multimeter to test the output of the charger: pin 1 is positive and pin 3 is negative, the voltage should be around 67.2V. Link to comment Share on other sites More sharing options...
Alan Ng Posted November 21, 2016 Author Share Posted November 21, 2016 6 hours ago, zlymex said: 93% of Wheellog display correspond to 65.3V(4.08V per cell), which is not normal. Apart from the charger or the battery, the internal A/D may be faulty. I recommend OP turns V3 on and start wheellog while the wheel is lying down, connect and disconnect the charger to see if there is any changes on the wheellog for battery level. If it shows 100% when plug-in, then the battery is faulty or out of balanced. If the reading is always 93%, then you need a multimeter to test the output of the charger: pin 1 is positive and pin 3 is negative, the voltage should be around 67.2V. So it might be the charger being faulty instead of the battery? I'll try this tonight. Link to comment Share on other sites More sharing options...
zlymex Posted November 21, 2016 Share Posted November 21, 2016 4 minutes ago, Alan Ng said: So it might be the charger being faulty instead of the battery? I'll try this tonight. Yes. And that could be a better faulty element than battery. Link to comment Share on other sites More sharing options...
Alan Ng Posted November 21, 2016 Author Share Posted November 21, 2016 This is the wheellog, I dont understand why its saying 82.67volts. Should be 67.2volts. Can anyone explain this? im not a technical person with regards to electric circuits etc. Link to comment Share on other sites More sharing options...
zlymex Posted November 21, 2016 Share Posted November 21, 2016 2 hours ago, Alan Ng said: This is the wheellog, I dont understand why its saying 82.67volts. Should be 67.2volts. Can anyone explain this? im not a technical person with regards to electric circuits etc. You probably got the wrong version of wheellog. I might got the wrong version too, because it shows 67V when it should be 84V. Link to comment Share on other sites More sharing options...
Alan Ng Posted November 21, 2016 Author Share Posted November 21, 2016 17 minutes ago, zlymex said: You probably got the wrong version of wheellog. I might got the wrong version too, because it shows 67V when it should be 84V. OMG u are right. i redownloaded the version from google play store.. and it shows 67v and 100% battery... THANKS ALOT! Link to comment Share on other sites More sharing options...
Donafello Posted November 21, 2016 Share Posted November 21, 2016 10 minutes ago, Alan Ng said: OMG u are right. i redownloaded the version from google play store.. and it shows 67v and 100% battery... THANKS ALOT! LOL. So you were both using the wrong app. At least thats fixed. Link to comment Share on other sites More sharing options...
Hansolo Posted November 21, 2016 Share Posted November 21, 2016 That's why I asked the installer version.... but without ansver..... Link to comment Share on other sites More sharing options...
Marty Backe Posted November 22, 2016 Share Posted November 22, 2016 Now go buy yourself a Pebble watch Link to comment Share on other sites More sharing options...
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