tag:blogger.com,1999:blog-1709537690528523236.post8415509972595558614..comments2024-03-29T05:47:08.860+10:00Comments on in my view ...: Electric Vehicles Battery Facts (helping make the most out of yours)obakesanhttp://www.blogger.com/profile/13743339737847465926noreply@blogger.comBlogger15125tag:blogger.com,1999:blog-1709537690528523236.post-83672434534472131522020-05-27T09:02:41.980+10:002020-05-27T09:02:41.980+10:00I was simply trying to illustrate what a problem w...I was simply trying to illustrate what a problem will look like. Until then I see no significant issue and as you have said, just know what it is <i>and then</i> look for changesobakesanhttps://www.blogger.com/profile/13743339737847465926noreply@blogger.comtag:blogger.com,1999:blog-1709537690528523236.post-66042474096596112182020-05-27T08:52:42.308+10:002020-05-27T08:52:42.308+10:00I remember the problem you had. With mine there is...I remember the problem you had. With mine there is no change in volts with charger connected or not. I still see 54.4v. maybe it's just a charger tweak issue. Will monitor if anything changes in near future. Thanks for the adviceAli Dalkushttps://www.blogger.com/profile/02244661561506156034noreply@blogger.comtag:blogger.com,1999:blog-1709537690528523236.post-81435777809207453292020-05-27T08:24:14.742+10:002020-05-27T08:24:14.742+10:00agreed, but the reality is that its probably quite...agreed, but the reality is that its probably quite sufficient as it is. I expect that such a minor V difference (0.2v / 13 = 0.015V) is an insignificant issue. What will be more interesting to watch for is that you do not find that (when unplugging the charger with the scooter turned on so that you can see the Volts) that Volts do not instantly plummet 1 or 2 V. This indicates a problem in the cell pack (probably an inbalance). This is a video I did to send to the seller (https://youtu.be/n8N2xySOA6Y)obakesanhttps://www.blogger.com/profile/13743339737847465926noreply@blogger.comtag:blogger.com,1999:blog-1709537690528523236.post-34079954226478215512020-05-26T21:39:24.743+10:002020-05-26T21:39:24.743+10:00Thanks for the advice. I am afraid without a voltm...Thanks for the advice. I am afraid without a voltmeter I won't be able to tweak it healthy Ali Dalkushttps://www.blogger.com/profile/02244661561506156034noreply@blogger.comtag:blogger.com,1999:blog-1709537690528523236.post-70139622440991675582020-05-26T07:40:01.269+10:002020-05-26T07:40:01.269+10:00Ali, before you get concerned at splitting hairs o...Ali, before you get concerned at splitting hairs over insignificant amounts that you can't be certain of, just check the >actual voltage< that the charger itself puts out and remember that i) its not a hand calibrated "NASA standards" device ii) the battery voltage <b>will be different</b> because you are seldom anywhere reading off the battery because the BMS is <b>always</b> part of the circuit.<br /><br />Next, read this post: https://cjeastwd.blogspot.com/2020/02/tweaking-up-your-charger.html<br /><br />Best Wishesobakesanhttps://www.blogger.com/profile/13743339737847465926noreply@blogger.comtag:blogger.com,1999:blog-1709537690528523236.post-25367267162608897182020-05-26T04:25:31.681+10:002020-05-26T04:25:31.681+10:00I just noticed(after doing 300 km in my first mont...I just noticed(after doing 300 km in my first month, when I charge I see 54.4v. I never seen 54.6v( first 2 weeks I didn't check or don't remember) but since last 2 weeks as starting to have more obsession to battery (As you mentioned in one of your articles 😀 ) now I am checking what volt I have on the LCD screen. The performance seem to be ok as I can get ranges 38-41 km in average.Ali Dalkushttps://www.blogger.com/profile/02244661561506156034noreply@blogger.comtag:blogger.com,1999:blog-1709537690528523236.post-6958555087921260692020-05-11T15:43:12.389+10:002020-05-11T15:43:12.389+10:00Hi Ali, thanks for your kind comment.
My view is ...Hi Ali, thanks for your kind comment.<br /><br />My view is to take it down to no less than 44V while under power (full cruise control speed with Power mode <b>not</b> ludicrous mode).<br /><br />Not recharge until its about that (often 3 or so trips, but maybe one longer trip) and make sure its fully charged. I avoid recharging till the night before I know I'll be using it the next day (so that it doesn't sit for days at full charge, minimising any potential for Nickle plating out).<br /><br />Happy Scootingobakesanhttps://www.blogger.com/profile/13743339737847465926noreply@blogger.comtag:blogger.com,1999:blog-1709537690528523236.post-72961051445927652662020-05-11T09:58:08.914+10:002020-05-11T09:58:08.914+10:00Hi, thanks for the very informative article you pr...Hi, thanks for the very informative article you prepared. I am having my Widewheel Pro since 3 weeks and till now I was discharging it till almost zero when the speed was falling less than 10km/h( by especially doing extra miles to finish the battery).after that I was doing full cycle charge. Now I see that was very wrong. Now I will follow your advise. Thanks. AliAli Dalkushttps://www.blogger.com/profile/02244661561506156034noreply@blogger.comtag:blogger.com,1999:blog-1709537690528523236.post-74055190408065014492020-04-17T18:16:44.588+10:002020-04-17T18:16:44.588+10:00Many thanks for your help!Many thanks for your help!Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-1709537690528523236.post-50863805794851223022020-04-15T18:18:02.977+10:002020-04-15T18:18:02.977+10:00Hi Phil
1) no I very seldom charge to 95% I mostl...Hi Phil<br /><br />1) no I very seldom charge to 95% I mostly charge to 100%<br />2) correct <br />3) personally that's not my style, but as long as you charge to 100% at least 1 charge in 3 I am not sure if it will be a problem. However I'm unwilling to risk battery pack imbalance (having had to pull a pack apart to balance charge) I'd rather just fully charge it and never have that problem.<br /><br />My approach is to wait till its at 40% before recharging, if that's a few small trips then great, if thats only one trip then great.obakesanhttps://www.blogger.com/profile/13743339737847465926noreply@blogger.comtag:blogger.com,1999:blog-1709537690528523236.post-50046299495074852642020-04-15T16:45:56.754+10:002020-04-15T16:45:56.754+10:00Hello,
I'm so sorry to asking this and i'...Hello,<br /><br />I'm so sorry to asking this and i'm sure it must be somewhere in your text but 1 English is not my native langauage and 2 this is all very technical. Is this what i try to conclude right?<br /><br />- always charge to 95%<br />- never drive battery empty<br />- once a week charge to 100%<br /><br />Or is there the need to once a week fully discharge also?<br />Thank you in advance for you answer!<br /><br />kind regards,<br />PhilAnonymousnoreply@blogger.comtag:blogger.com,1999:blog-1709537690528523236.post-30837842735608660072019-09-24T07:38:18.526+10:002019-09-24T07:38:18.526+10:00oh, I meant to write "periodically check"...oh, I meant to write "periodically check" ... its not a one off thing. Same is true for a bicycle ...obakesanhttps://www.blogger.com/profile/13743339737847465926noreply@blogger.comtag:blogger.com,1999:blog-1709537690528523236.post-77390312794459913762019-09-24T07:37:29.567+10:002019-09-24T07:37:29.567+10:00Hi there
its hard to be sure as it could be a few...Hi there<br /><br />its hard to be sure as it could be a few things. Your experience of pushing it hard and the BMS kicking in and denying power from the battery is something I've have once on my single motor. However your description of your usage is that you're doing a heavy discharge cycle on the battery daily (driving it down to low levels like literally just before cut off). This is how you minimize your battery life cycle count.<br /><br />I think that you've made a decision to buy something which is right on the edge of its design parameters (and that's fine) and so you have to juggle (which you may have) the cost benefit of that as well as the cost to step up to something more expensive (like a dualtron{and still have other types of failures}).<br /><br />As an aside, I noted the other day that Aliexpress had batteries for US$270 for the mercane, which if you're not the electrnically competent type means you don't have to rebuild it yourself.<br /><br />My first advice is buy another charger and charge it at work if you can, they cost about $25 on eBay and would mean that you can charge at work which will 1) reduce the discharge depth 2) give you an opportunity to remove one critical failure point (for right now if you forget to charge its critical right?).<br /><br />The plug type is XT60 and so you can just buy any charger fore 54V lithium (and there are plenty, they even look like ours) and just solder on a new plug. Just make dam fuckin sure you put the +ve and -ve on the right way round ... they should be marked. Unplug the charger and let it stand for a few minutes before you cut off the end. I see XT60 plugs on ebay for low prices too, so it shouldn't take more than $30 for a complete "other charger"<br /><br />I'd suggest that based on what you're saying (such high usage) you would anticipate about 2 months before you started to observe battery loss because you ARE cycling to about full discharge every day). Getting another charger will be the cheapest way to ensure that you get over 500 cycles (so more than a year) on that battery before losing significant capacity.<br /><br />As a benefit you'll also be able to suffer that degredation because you will only be doing 10Km per charge.<br /><br />I also STRONGLY recommend that (given your miles) you check things like all bolts and screws on the scooter for being firm. Loctite where you can. I'll do a post on this soon but I discovered a small amount of play in my rear end (because the brake made a sound in one lean direction but not the other) and took my covers off to check. Turned out to be one swing arm bolt needed a quarter turn to snug it up and the problem went away.<br /><br />A stitch in time ... right?<br /><br />Best Wishesobakesanhttps://www.blogger.com/profile/13743339737847465926noreply@blogger.comtag:blogger.com,1999:blog-1709537690528523236.post-85672211620243816922019-09-24T04:19:47.625+10:002019-09-24T04:19:47.625+10:00I have dual motor WW. I’ve been riding it for 3 we...I have dual motor WW. I’ve been riding it for 3 weeks now. At first, the battery would charge to 54.5 or so, now it climbs to 52.7 max. <br /><br />I’m worried that it might be battery degradation, but that would be so soon, don’t you think?<br /><br />I charge it everyday overnight for about 6 or 7 hours. My daily commute is 20 km. By the time I reach home, it would have lost one dot, and the voltmeter reads around 46 (standing). One day I forgot to charge it at night and it couldn’t go halfway to my work (about 5km it gave in) and it had dropped only two dots, but the voltmeter read 39. <br /><br />How’s it going with yours? Are you experiencing battery wear too? Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-1709537690528523236.post-82030771444683511642019-08-06T12:32:19.090+10:002019-08-06T12:32:19.090+10:00Thanks for all these really helpful articles. I j...Thanks for all these really helpful articles. I just took delivery of my 2019 twin motor widewheel. When fully charged the voltage meter reads 54.7. Based on my understanding from this article I shouldn't be charging it to full. So what is the voltage that I should be charging it to? i.e. what should the voltage on the key ignition be reading? Thanks again!matt wardhttps://www.blogger.com/profile/04814684852503114771noreply@blogger.com