Power issue and crackling noise

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paul fortman   100 mW

100 mW
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Joined: Oct 27 2018 5:04pm

Power issue and crackling noise

Post by paul fortman » Mar 17 2020 6:41pm

Hi all,

I am new to the ebike world, I bought an ebike at Christmas and all has been going fine until yesterday! In a nutshell... I was riding along and all of a sudden I lost power for around 10 seconds and the display was showing the voltage going up and down, literally from full to empty, full to empty over and over again, meanwhile the digits for the voltage where dropping then climbing.
I was completely gob smacked! Then tonight I switched everything on just to test it again and again the same thing. This time the bike is just sat still. I then heard a crackling sound coming from either the battery or the motor. It is a bafang mid drive motor.

Can anyone help I'm very confused and concerned also.
Thanks in advance,

Paul.

AngryBob   100 W

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Re: Power issue and crackling noise

Post by AngryBob » Mar 17 2020 9:21pm

OK, Paul. How about you supply some information.

Brand name of bike, and/or store where you purchased it.

Describe the ride, weather, color of the sky, and every damn thing you can think of that was happening right before the problem first happened. Rain and/or potential apple juice attacks might be a focal point, landing a 6 foot jump, dropping the bike down some stairs, got drunk and puked on it, anything at all out of the ordinary. Think long and hard, there is very often some detail which will save a lot of people a lot of time while they are trying to help you. Some may even become quite irate when you ask on the third page whether or not dropping it into a swimming pool might matter.

Now, this has happened twice, and BOTH TIMES, it presumable stopped. What did you do? If you did the tried and true "nothing at all", how long did it take to stop and did it work normally after that?

Also, regarding the bike itself, have you made any changes to the bike, ANYTHING at all, adjustments, additions, removals, ANY CHANGE in procedure or usage pattern.

Now, check your wires and connections VERY carefully. Inspect, verify no loose pins, no nicks in the insulation, etc. Take your time, and pay attention. This is, by far, the most common cause of problems in general, and similar to yours in specifics. Also, most people have to be told to do this multiple times, before they do it once, and multiple more times before they do it again, and also frequently solves problems, on the THIRD pass thru those wires and connections.
"Not being treated like a dumb dick is one of the incentives we have to become less stupid." - Balmorhea.

paul fortman   100 mW

100 mW
Posts: 40
Joined: Oct 27 2018 5:04pm

Re: Power issue and crackling noise

Post by paul fortman » Mar 18 2020 4:05pm

Thanks for the info. I'll keep you posted on my findings.

Paul.

paul fortman   100 mW

100 mW
Posts: 40
Joined: Oct 27 2018 5:04pm

Re: Power issue and crackling noise

Post by paul fortman » Mar 22 2020 8:50am

Ok I've been over all wires and connections extremely thoroughly and I cannot find any loose connections. I have however noticed that when I switch the battery on at its switch there is no crackling, the cracking only starts at the point I switch on the esc? Any thoughts?

AngryBob   100 W

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Re: Power issue and crackling noise

Post by AngryBob » Mar 22 2020 2:07pm

Due to the great wealth of detailed diagnostic information you have supplied, I can categorically state with no doubt whatsoever that some sort of unidentifiable fuckup has, in fact, occurred.
"Not being treated like a dumb dick is one of the incentives we have to become less stupid." - Balmorhea.

paul fortman   100 mW

100 mW
Posts: 40
Joined: Oct 27 2018 5:04pm

Re: Power issue and crackling noise

Post by paul fortman » Mar 22 2020 3:30pm

Thanks for the advice Angry bob :bigthumb:

AngryBob   100 W

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Re: Power issue and crackling noise

Post by AngryBob » Mar 23 2020 6:28am

I asked you a series of questions designed to narrow down a vast range of possibilities and approach a solution to YOUR problem.

You FAILED to answer a single one of them.

My crystal ball is in the shop this week. Maybe someone else still has a working one.
"Not being treated like a dumb dick is one of the incentives we have to become less stupid." - Balmorhea.

paul fortman   100 mW

100 mW
Posts: 40
Joined: Oct 27 2018 5:04pm

Re: Power issue and crackling noise

Post by paul fortman » Mar 23 2020 9:24am

Thanks for the advice. Maybe next time reduce the levels of sarcasm. Not all people find that acceptable. Helping minus the sarcasm would be great and be a much more positive step towards people's communication with you.
I have found better help on this subject from other forums with more professional and approachable individuals.
I didn't want to be to hasty in writing this, therefore i read through your sarcastic "ADVICE" towards others on other posts you crop up on just to ensure it wasn't only me that's upset you. As expected you behave in the same way towards others.

Manners maketh man! That's a very old Proverb.
Take heed. Let's both learn something shall we.

No reply needed, ego's not necessary on this forum.

AGAIN... Thanks for your advice Angry bob ๐Ÿ‘

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E-HP   100 kW

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Re: Power issue and crackling noise

Post by E-HP » Mar 23 2020 10:46am

paul fortman wrote: โ†‘
Mar 23 2020 9:24am
Thanks for the advice. Maybe next time reduce the levels of sarcasm. Not all people find that acceptable. Helping minus the sarcasm would be great and be a much more positive step towards people's communication with you.
I have found better help on this subject from other forums with more professional and approachable individuals.
I didn't want to be to hasty in writing this, therefore i read through your sarcastic "ADVICE" towards others on other posts you crop up on just to ensure it wasn't only me that's upset you. As expected you behave in the same way towards others.

Manners maketh man! That's a very old Proverb.
Take heed. Let's both learn something shall we.

No reply needed, ego's not necessary on this forum.

AGAIN... Thanks for your advice Angry bob ๐Ÿ‘
To be fair, if you don't provide information or answer questions of those attempting to help you, you probably won't receive much usable advice. Hence, only one person has attempted to help you.

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fechter   100 GW

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Joined: Dec 31 2006 3:23pm
Location: California Bay Area, USA

Re: Power issue and crackling noise

Post by fechter » Mar 23 2020 10:50am

Angry Bob is a known troll. You can ignore his bad manners.

The crackling noise is interesting. I haven't come across that one before.
The symptoms indicate a bad connection somewhere between the battery and the motor. If the crackling noise is due to arcing, there will be a visible burn mark somewhere. It could be inside the battery.

What kind of battery are you using? I've seen plenty of the "shark" style packs fail at the contacts between the pack and the mounting plate.

Another thing to try is power on the display and physically wiggle the parts to see if you can get it to cut out. You may be able to narrow things down this way.
"One test is worth a thousand opinions"

paul fortman   100 mW

100 mW
Posts: 40
Joined: Oct 27 2018 5:04pm

Re: Power issue and crackling noise

Post by paul fortman » Mar 23 2020 5:05pm

That's a very good point and very helpful, I will try wiggling the wires to see if anything noticeable happens with the connection. I'm using a Hailong 3 battery pack. I think that would be the shark style you mentioned?
Its very starange how it crackles though, however that only occurrs when the speed controller is switch on. Simply switching the battery on at the switch has no effect. It's very odd.

AngryBob   100 W

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Re: Power issue and crackling noise

Post by AngryBob » Mar 24 2020 6:55am

Seems like those approachable "professionals" on that other site didn't make much progress, did they?

Here we are approaching page two and we have our very first description of equipment, fantastic progress!

We'll see how long the site admin wants to spend playing 20 questions.

I wonder if anyone will come up with the obvious suggestion? You need to use your head.
"Not being treated like a dumb dick is one of the incentives we have to become less stupid." - Balmorhea.

docw009   100 kW

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Location: Chicago area suburbs.

Re: Power issue and crackling noise

Post by docw009 » Mar 24 2020 10:45am

Post deleted.
Last edited by docw009 on Mar 24 2020 12:40pm, edited 2 times in total.

paul fortman   100 mW

100 mW
Posts: 40
Joined: Oct 27 2018 5:04pm

Re: Power issue and crackling noise

Post by paul fortman » Mar 24 2020 12:34pm

Any suggestions how I can resolve the issue?

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fechter   100 GW

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Joined: Dec 31 2006 3:23pm
Location: California Bay Area, USA

Re: Power issue and crackling noise

Post by fechter » Mar 25 2020 9:38am

Having another battery would be a good test but I assume you don't have one.

Can you post a picture of the battery connection? It sounds like possibly there is a bad connection inside the battery around the connector. You may need to try disassembling that part of the battery and look inside.
"One test is worth a thousand opinions"

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zeccato   100 W

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Joined: Jan 17 2019 8:16am

Re: Power issue and crackling noise

Post by zeccato » Mar 26 2020 2:50am

paul fortman wrote: โ†‘
Mar 23 2020 9:24am
Thanks for the advice. Maybe next time reduce the levels of sarcasm. Not all people find that acceptable. Helping minus the sarcasm would be great and be a much more positive step towards people's communication with you.
I have found better help on this subject from other forums with more professional and approachable individuals.
I didn't want to be to hasty in writing this, therefore i read through your sarcastic "ADVICE" towards others on other posts you crop up on just to ensure it wasn't only me that's upset you. As expected you behave in the same way towards others.

Manners maketh man! That's a very old Proverb.
Take heed. Let's both learn something shall we.

No reply needed, ego's not necessary on this forum.

AGAIN... Thanks for your advice Angry bob ๐Ÿ‘
Be flexible, I'd take the joke from anyone who's taken their time trying to help you anyway. It's part of the humor. You're not paying for help.
(if you're not flexible with a little wind, a hard stem can break.).
Full susp. folding 20 swxh r. (2011),. 02 2020 MacT8. batt. 48v. 25A Life (2012), and 48 7,5A a123 (2018?). Controller programmable EB3 12 FET. Charger Balancer 14s: TP1430C. Gophert CPS-6011 60V 11A. Mercury (rarely). Buzzer. https://www.google.com/url?sa=t&source= ... 6dXxc9-lNW

AngryBob   100 W

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Joined: Jul 10 2019 4:37pm

Re: Power issue and crackling noise

Post by AngryBob » Mar 30 2020 8:24am

Proper manners would dictate the OP notify others when a solution has been reached, detailing exactly what that was.
"Not being treated like a dumb dick is one of the incentives we have to become less stupid." - Balmorhea.

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