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Whats up with these cheap NEW chademo adapters on ebay shipping from china?

boonedocks

MS LR Blk/Blk 19” OD-1/1/21 RN#1143376 NO Date
May 1, 2015
2,906
4,675
Gainesville GA
Just posted in another thread but may be useful here:

My Tesla branded CHADeMO adapter firmware has been updated 3-4 times since I purchased it in May 2015. Doubt they’ll touch your Chinese replIca one if firmware changes to the BMS require a CHADeMO firmware update. ¯\_(ツ)_/¯
 

Ianf

Member
Dec 22, 2016
27
15
London, UK
why anyone think its okay to go cheap on a device that is responsible for carrying an upwards of 100kwh of energy is beyond me.

And... if^h^hwhen it does blow up/melt/catch fire, who's paying for the damage? Us in the long run. ebay / CE manufacturer won't feel responsible for it. Hopefully there's a way to tell it's a fake and not start a charge thru it. Chademo is only 50kw, so only half the enormous amount of energy of a SuC.
 
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cookie99

Member
Mar 14, 2016
911
456
California
ofcourse using an "off-brand" chademo adapter sounds disastrous, but i'm curious to know the origin of these. They could be genuine.. they could not be, but I wouldn't be so quick to dismiss these exact ones as replicas.

they could have just been taken off the assembly line of tesla's official manufacturer, just like davewill said. I'm just curious if anyone had any inside scoop or tried to purchase one to compare.
 

allhands

Member
Apr 1, 2016
86
106
Wisconsin
I might be willing to give it a try. What's the worst that could happen? lol

But seriously, is there some kind of microcomputer in the adapter that could cause damage if it's not built correctly or is inauthentic? Or is it just an adapter of the CHADeMO pins to the Tesla pins? I was under the impression that all of the voltage regulation is handled internally within the Tesla.
 
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davewill

Active Member
Feb 5, 2014
1,828
1,979
San Diego, CA, US
I might be willing to give it a try. What's the worst that could happen? lol

But seriously, is there some kind of microcomputer in the adapter that could cause damage if it's not built correctly or is inauthentic? Or is it just an adapter of the CHADeMO pins to the Tesla pins? I was under the impression that all of the voltage regulation is handled internally within the Tesla.

For DC charging, all the voltage and current regulation is done by the external charger. The car sends messages telling it what voltage/current to use. The adapter has to translate back and forth between CHAdeMO messages and Supercharger messages. Worst case, it does that wrong and the CHAdeMO charger uses too high or low a voltage or current. I'm sure the car would open it's contactors if things got really bad, but that's no guarantee that there couldn't be damage.
 

cbdream99

Member
Apr 8, 2017
130
94
DFW
I wouldn't trust those 'quick money' adapter (for the seller) made in China. If it causes any damage, I am sure you will have to see if Tesla covers it. The problem is someone see an opportunity, they will copy as knock off with no QC or testing, or buy some cheap out of spec parts put them together, sell some and then fold.
 

KArnold

Member
May 21, 2017
579
536
Columbus OH
I bought one - $205 I think including shipping. Seller has a 99.7% rating with 10k sales but sells just about everything. Maybe not the smartest move I've made, but we'll see - I didn't realize these were more complex than they appear. I asked specifically if these were both Tesla branded and Tesla manufactured - he said "yes" to both, and said it came in Tesla packaging. If not, it's likely going back.
 
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Reactions: allhands

allhands

Member
Apr 1, 2016
86
106
Wisconsin
I bought one - $205 I think including shipping. Seller has a 99.7% rating with 10k sales but sells just about everything. Maybe not the smartest move I've made, but we'll see - I didn't realize these were more complex than they appear. I asked specifically if these were both Tesla branded and Tesla manufactured - he said "yes" to both, and said it came in Tesla packaging. If not, it's likely going back.

Please report back regarding what you receive and how well it works!
 

kingtj

Member
May 23, 2018
30
23
Brunswick, MD
I'm also interested in following this one. I saw these adapters for sale on eBay too. Honestly, it only looks like there were a few auctions going on at a time for them, though. A couple were from an eBay account in China with 0 feedback, so I skipped right over those. I can't see how anyone would want to gamble on PayPal'ing over hundreds of dollars to a Chinese account with no previous transaction history?

I'm tempted to try to bid on one that's offered there by someone with a much better feedback score, though. In my situation, I only have one location in mind where I want to use the DC charging. (We have a free CHADeMO charger available to use in one of the shopping strip malls near where I live. I find myself shopping at one store or another there at least 4 times a week, and I go right by its highway exit every time I drive in to the office. They also offer a free ChargePoint charger there, but that one charges my Tesla so slowly, it really only winds up giving me about 20-25 miles of extra range if I spend 1-2 hours there.)

I'm in the unfortunate situation where I can only charge at home with the 120 volt outlet at 15 amps. I have a detached garage that was only wired up for that, and my 200 amp electrical service in the basement is pretty much maxxed out already since we have 2 heat pumps and an all electric home. The electrician who examined everything told me I'd be looking at $7-10,000 to do everything needed to get a better circuit out there under the circumstances. (Even the existing ground wire on my electrical box was put in back in the 1960's and won't meet code today, so that would need to be redone as part of the project too.) So I'm always looking for a strategy to charge my car as much as possible on free chargers around where I live and work, so at home overnight is just "topping it off".

I could justify spending $250 or so on a CHADeMO adapter just for use at that one charging station if the thing works properly with it. But I'd love to know if these things on eBay are turning out to be in OEM Tesla packaging first.
 

Cosmacelf

Well-Known Member
Mar 6, 2013
8,652
21,036
San Diego
I'm in the unfortunate situation where I can only charge at home with the 120 volt outlet at 15 amps. I have a detached garage that was only wired up for that, and my 200 amp electrical service in the basement is pretty much maxxed out already since we have 2 heat pumps and an all electric home. The electrician who examined everything told me I'd be looking at $7-10,000 to do everything needed to get a better circuit out there under the circumstances. (Even the existing ground wire on my electrical box was put in back in the 1960's and won't meet code today, so that would need to be redone as part of the project too.) So I'm always looking for a strategy to charge my car as much as possible on free chargers around where I live and work, so at home overnight is just "topping it off".

I could justify spending $250 or so on a CHADeMO adapter just for use at that one charging station if the thing works properly with it. But I'd love to know if these things on eBay are turning out to be in OEM Tesla packaging first.

Are any of your outlets near your car connected to a 20A breaker instead of a 15A? If so, you could charge using the NEMA 5-20 adapter and get about 42% faster charge rate.
 

gavine

Petrol Head turned EV Enthusiast
Apr 1, 2014
2,597
2,129
Philadelphia, PA
I might be willing to give it a try. What's the worst that could happen? lol

But seriously, is there some kind of microcomputer in the adapter that could cause damage if it's not built correctly or is inauthentic? Or is it just an adapter of the CHADeMO pins to the Tesla pins? I was under the impression that all of the voltage regulation is handled internally within the Tesla.

CHAdeMO Adapter Tear Down
 

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