Ed Posted October 20, 2015 Share Posted October 20, 2015 Greets all,I just received my first EU, 9B1 C+ ... but I am hesitant to ride it because the unit doesn't take a charge with the charger that came with the unit. The status light is green when I connected it to the outlet but it stays green when I connect it to 9B1. The app says the device is at 49% charge so it should accept charging. Anyone else dealt with this?btw, I'm thinking of buying extra chargers from Aliexpress (most resellers are crooks).Thxs for any feedback. -Ed Link to comment Share on other sites More sharing options...
Gimlet Posted October 20, 2015 Share Posted October 20, 2015 Can you borrow or buy a cheap volt meter to check the output of the charger and the state of the battery? Link to comment Share on other sites More sharing options...
Ed Posted October 20, 2015 Author Share Posted October 20, 2015 I'll give that a try, a voltmeter is useful. Link to comment Share on other sites More sharing options...
DrSoong Posted October 20, 2015 Share Posted October 20, 2015 I had the same issue with a bad charger out of the box. I mailed the ninebot dealer in town and he changed it the next day. Link to comment Share on other sites More sharing options...
Gimlet Posted October 20, 2015 Share Posted October 20, 2015 I'll give that a try, a voltmeter is useful.Be careful not to short out the pins on the euc charge port when you probe it. Link to comment Share on other sites More sharing options...
Ed Posted October 22, 2015 Author Share Posted October 22, 2015 Yeah, I just got a multimeter. I wanted to test the charger ports but it's difficult because of the plastic "foreskin" that cover the pins. I would have to force it off. I did try it out on the 9B1 charging port on 25 DCV range and nothing registered; that could be normal though. I highly doubt that the unit has any defects, I'm more inclined to blame the charger.Opinions? Link to comment Share on other sites More sharing options...
Gimlet Posted October 22, 2015 Share Posted October 22, 2015 25VDC is too low. You are looking for about 57VDC so you need the next range up. I use the 200 V range on my meter. Link to comment Share on other sites More sharing options...
Ed Posted October 22, 2015 Author Share Posted October 22, 2015 25VDC is too low. You are looking for about 57VDC so you need the next range up. I use the 200 V range on my meter.sorry for the confusion. The charger is suppose to be 61VDC and the battery is 5.5VDC. I only attempted to tested the battery at 25VDC.The charger is difficult to test. Link to comment Share on other sites More sharing options...
Gimlet Posted October 22, 2015 Share Posted October 22, 2015 I think you'll find you have the decimal point in the wrong place for the battery.55V not 5.5v. Link to comment Share on other sites More sharing options...
Rotator Posted October 22, 2015 Share Posted October 22, 2015 63v the charger and the battery when full Link to comment Share on other sites More sharing options...
Ed Posted October 22, 2015 Author Share Posted October 22, 2015 Can anyone with a voltmeter try out the charging port leads and let me know what they noticed? Just trying to establish a baseline for testing the port. if you can find and provide a link to Ninebot one's technical/electrical specifications, that would be great.Designate the pins: #1 Top Left, #2 Top right, #3 Bottom left, #4 Bottom RightIn the picture, unit is laying on it's left side. Thanks! Link to comment Share on other sites More sharing options...
SirGeraint Posted October 22, 2015 Share Posted October 22, 2015 This should answer your question...http://forum.electricunicycle.org/topic/867-charging-in-a-car/?page=2#comment-10431 Link to comment Share on other sites More sharing options...
Ed Posted October 23, 2015 Author Share Posted October 23, 2015 Nice! Thanks SirGeraint! The more I read on these forums the more I realize how young and niche EUC still are and how hands-on/helpful the people on these forums are. Awesome!!! I'm looking forward to learning how to ride and understand my EUC.Tonight I tried to be a bit daring and tried a few things to identify if I have a problem or not; so I determine what to do next.Here's what I tried and my findings:Tested charger with analog voltmeter @ 125VDCPlaced little plastic insulator between the pins just in case, and...Result: generating 63 volts on pins #1 and #2Tested charging port + cableOpened up battery housing to expose charging wire to battery, did continuity test and passedReconnected wires, tested for continuity off charging port leads #1 and #2 and failed (is this normal?)The seller responded with this to my question:Thank you for your mail.Do not worry, we have fully test before sending.Please try to charge after the battery ran out, it will be ok.Have a nice day.Perhaps, I am over-analyzing and should just do as they say. Honestly, just want to enjoy my purchase and not fret over this anymore. Link to comment Share on other sites More sharing options...
Ed Posted October 23, 2015 Author Share Posted October 23, 2015 Just had a thought... Something else I could have tested is the connection of the charger to the port. Can be done by exposing the wire before it reaches the battery, and test it for voltage. Link to comment Share on other sites More sharing options...
Ed Posted October 24, 2015 Author Share Posted October 24, 2015 Just had a thought... Something else I could have tested is the connection of the charger to the port. Can be done by exposing the wire before it reaches the battery, and test it for voltage.Good news folks... somehow someway, after trying to do this test the charging light turned RED! It's actually charging now! Only thing I did was test the leads that connect directly to the battery from the charging port for voltage while it was connected to the charger. It definately had a charge because I accidentally caused a short and sparks flew before an after I saw the red LED.I'm sooooo glad this is over. Learned something in the process.Thanks those who tried to help! (EDIT) UPDATE: 10 minutes later it turned green again LOL. Okay, BMS is messing with me. Link to comment Share on other sites More sharing options...
esaj Posted October 24, 2015 Share Posted October 24, 2015 It definately had a charge because I accidentally caused a short and sparks flew before an after I saw the red LED. Link to comment Share on other sites More sharing options...
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