SZZS specific CEF50-main thread (initial builds and troubleshooting related only)

[calvintys]

I have installed a regular port

View attachment 133742

My frame come with this port

 

[TCFlowClyde]

My frame come with this port

I'm using the 720 Wh battery 36V motor.

 

[calvintys]

I'm using the 720 Wh battery 36V motor.

My its 480 wh battery 48v motor so its 10ah capacity

 

[TCFlowClyde]

My its 480 wh battery 48v motor so its 10ah capacity

Different battery = diff battery charger and port

 

[92se-r]

I have installed a regular port

View attachment 133742

Is that a 5.5mm port?

 

[calvintys]

Last week i was try to remove the charging port n accidentally insert the allen key into the port n its spark with smoke. So i quickly remove disconnect the battery, motor and the charging port cable. Lucky my battery n motor still working, only the charging port + n - has weld together as on picture.

 

[TCFlowClyde]

Does anyone has to his charger port and knows where to get dust covers?

 

[LAnton]

Well, I kinda didn't want to switch chargers or ports really. Hoping just the cover is easier to find...or so I thought.

I did not change the charger.

https://aliexpress.ru/item/4001169264790.html?spm=a2g2w.orderdetail.0.0.1ba74aa6FOIcxP&sku_id=10000015015733169

https://aliexpress.ru/item/1005004522826054.html?spm=a2g2w.orderdetail.0.0.792d4aa6ba9OA8&sku_id=12000029464493951

 

[TCFlowClyde]

I did not change the charger.

https://aliexpress.ru/item/4001169264790.html?spm=a2g2w.orderdetail.0.0.1ba74aa6FOIcxP&sku_id=10000015015733169

https://aliexpress.ru/item/1005004522826054.html?spm=a2g2w.orderdetail.0.0.792d4aa6ba9OA8&sku_id=12000029464493951

Yeah, I guess that's an option. Splicing on different connectors might be a last ditch effort.

If so, maybe upgrade to a double-hinged plastic dust cover.

 

[calvintys]

Today saw some hiker in front of a small drop so i slow down n row it down. I think my frame hit on the tree root or rock. The sound was loud n my paint also chip off.

 

[Ktronik]

Does anyone has to his charger port and knows where to get dust covers?

View attachment 133747

try this, get our main charger PLUG and some blu tack, use the plug to make a inprint into the blu tack, your basily making a mold, that you then fill w hotglue, you should be able to make a hotglue cover, that will last for now...till you find a proper one...worth a try

 

[temon10]

My CEF50 and Bafang M820 reach the first 1000km flawlessly although I broke my collarbone with this bike

 

[TCFlowClyde]

Today saw some hiker in front of a small drop so i slow down n row it down. I think my frame hit on the tree root or rock. The sound was loud n my paint also chip off.

View attachment 133797

Ouch!

 

[TCFlowClyde]

try this, get our main charger PLUG and some blu tack, use the plug to make a inprint into the blu tack, your basily making a mold, that you then fill w hotglue, you should be able to make a hotglue cover, that will last for now...till you find a proper one...worth a try

I've got a big 3" roll of black vinyl tape that I've been using that usually lasts a couple of chargings. Quick and cheap.

Gonna see if I can adapt this. Sticks out a touch but I could buy extra when the hinge fails.

 

[Ktronik]

I've got a big 3" roll of black vinyl tape that I've been using that usually lasts a couple of chargings. Quick and cheap.

Gonna see if I can adapt this. Sticks out a touch but I could buy extra when the hinge fails.
View attachment 133836

As a electroinc desinger I must point out, that a 3 pin plug, for charging, really should stay 3 pin plug, as the 3rd pin is always a safety pin, for cell voltage or temp sensor, it would be unwise to change any 3 pin plug to 2 pin plug..... I know your not doing that so your all ok, its more for other modders.

 

[patdam]

As a electroinc desinger I must point out, that a 3 pin plug, for charging, really should stay 3 pin plug, as the 3rd pin is always a safety pin, for cell voltage or temp sensor, it would be unwise to change any 3 pin plug to 2 pin plug..... I know your not doing that so your all ok, its more for other modders.

If on the other side (battery) you have only 2 cables to charging (+ and -), i think that 2 pins or a jack with 2 contacts are enough, no ?

 

[mike_kelly]

Correct Patdam

 

[Ktronik]

If on the other side (battery) you have only 2 cables to charging (+ and -), i think that 2 pins or a jack with 2 contacts are enough, no ?

sure mate, all good, maybe my post was not needed....I don't know each bike plugs it comes w yet, but in general its best to keep the 3 pin there if your modding to another plug...that already has a 3 pin plug...

 

[TCFlowClyde]

sure mate, all good, maybe my post was not needed....I don't know each bike plugs it comes w yet, but in general its best to keep the 3 pin there if your modding to another plug...that already has a 3 pin plug...

I appreciate the friendly reminder. My only attribute is that not knowing better, I'd stay with the stock plug interface out of fear of messing up my electronics. That and avoiding plugged-in toaster ovens while in the bathtub especially if the spurned ex girlfriend is offering to heat up breakfast strudels.

Luckily, less water ingress potential in the desert here...but definitely dust intrusion can plug it up.

 

[92se-r]

As a electroinc desinger I must point out, that a 3 pin plug, for charging, really should stay 3 pin plug, as the 3rd pin is always a safety pin, for cell voltage or temp sensor, it would be unwise to change any 3 pin plug to 2 pin plug..... I know your not doing that so your all ok, its more for other modders.

The connector has nothing to do with it. It depends whether they are using that 3rd pin or not. As someone who has spent 20 yrs as an ee in aerospace and an ev oem, it would not be a 3 pin connector to support battery temp sensing. They would use a rtd with a differential input so it would require a 4 pin connector. In this case the charger is not handling low temp lockout, the bms most likely is.

 

[Ktronik]

The connector has nothing to do with it. It depends whether they are using that 3rd pin or not. As someone who has spent 20 yrs as an ee in aerospace and an ev oem, it would not be a 3 pin connector to support battery temp sensing. They would use a rtd with a differential input so it would require a 4 pin connector. In this case the charger is not handling low temp lockout, the bms most likely is.

of course your 100% right..

if the 3rd pin is not used, then all good....

 

[TCFlowClyde]

Ugh oh! This thread topic is in danger of turning into an Eye-Triple E mini symposium. For us laypeeps....Institute of Electrical and Electronics Engineers. (I'm from a fam of EEs, but not me obviously).

 

[TCFlowClyde]

Ugh oh! This thread topic is in danger of turning into an Eye-Triple E mini symposium. For us laypeeps....Institute of Electrical and Electronics Engineers. (I'm from a fam of EEs, but not me obviously).


View attachment 133872

Just to add in a little techno-levity for our resident thread engineers...Enjoy!
Still kids at heart.

 

[borysgo2]

Bellow mystery of bafang 43V charging port. If needed get yourself a two resistors soldered in the charger itself and replace port with standard 2 contact plug.

 

[Ktronik]

do you know if there is room for a XT90 anti spark connector in the charging port?? does anyone know if the 48v verison comes w 2 or 3 pin charge connector??

 

[patdam]

do you know if there is room for a XT90 anti spark connector in the charging port?? does anyone know if the 48v verison comes w 2 or 3 pin charge connector??

48V batteries are provided by the frame builders. For those i have: dengfu, SZZS and generic (for the lightcarbon) they have only + and - for charging, may be bafang battery (43V) use 3 contacts ?

 

[calvintys]

do you know if there is room for a XT90 anti spark connector in the charging port?? does anyone know if the 48v verison comes w 2 or 3 pin charge connector??

My 48V carbon battery. Picture tell a thousand words.

 

[borysgo2]

do you know if there is room for a XT90 anti spark connector in the charging port?? does anyone know if the 48v verison comes w 2 or 3 pin charge connector??

I have lce930 with different charging port.
For 2A bafang charger you can fitt standard round 5.5mm connector.

 

[borysgo2]

Yes, you can fitt 5,5mm connector. In order to use it there are two options.
1. Buy lab psu 60V 5A.
2. Modyfiy ori 2A bafang charger, you will need 4,7kR and 15kR resistor, both 0,6W. Next solder then in the charger an replace bafang cable wit standard cable with 5,5mm plug.

 

[Myalteregohamish]

Today saw some hiker in front of a small drop so i slow down n row it down. I think my frame hit on the tree root or rock. The sound was loud n my paint also chip off.

View attachment 133797

Get some gorilla tape to secure the broken one and contact Linda/jean and ask for two of the v3 motor covers.