Excellent video, my man. Instead of ordering a new battery I just used an 18650 cell I scavenged from an old laptop battery. Works great and now these headphones should last me another few years.
Thanks! someone might be tempted to pry at the metal edge face, but that would get you nowhere as it's a a plastic wall of the earcup on the others side. You have to go at seem shown. It's a bTch, but keep at it. My battery has what looks like some thermal tape or paste on the underside. I'm wondering if I need some kind of thermal paste, but there isn't really anything on that side of the headphone beside some wire. The headphone speakers are on the opposite side of a plastic wall.
I just tried to do this. Cowin is now putting the blue/green pair of speaker wires *UNDER* the double-sided tape that holds the battery in place. They're actually gluing the red/orange pair of wires to the battery itself. Trying to remove the battery is a real struggle. I was trying to be careful but I'm pretty sure I damaged the red/orange pair of wires. With the new battery installed & charged the phones are dead. I put the old battery back and got same result. I wonder if the headphones go into a "shutdown" mode if they detect a break in the speaker wires? pics on imgur [SLASH] gallery [SLASH] FYgK91W
On mine, I found out that there was a small screw underneath the white plastic piece, connecting the cover to the base. I almost broke my cover because I thought the whole thing was only held together with glue. The white piece is held on with some glue, gently lift it up and if your model has that screw, once the screw is undone, the cap should just come off. My battery was also different. It used a BL-5B battery.
Would have been nice if you'd showed removing the cap covering the battery... That said, knowing what is under the cap is a huge help. A couple of questions come to mind... I wonder if instead of replacing the battery like for like if a pair of AAs could be swapped in instead? Of course, a skilled 3D print designer could probably produce a replica cover with a battery compartment... or at the very least make a removable cover to ease battery replacement (these are skills I possess). The reason why I'm looking at this is because I bought a pair of Cowins (primarily for air travel) just prior to the Covid 19 lockdowns. Trouble is that the lockdowns happened & then air travel was hugely expensive & is still just recovering now. The upshot is that I wasn't able to use them for several years and when I tried, they wouldn't charge up. Like yourself, I dislike wasting otherwise perfectly good equipment plus I usually fly only once a year, so this issue is likely to reoccur again (hence my interest in replaceable batteries).
I think that for simplicity, replacing with appropriate size battery is the best solution. For greater ease of future replacement, you could certainly add plug connectors to the wires. But really, wire crimping or a quick solder is not much trouble. The cover does come off with some aggressive prying. You can see in the video where the four connections and can deduce where roughly to focus your prying. The glue is very strong. Reattaching with a weaker adhesive would simplify future disassembly.
@@tanbrolo After considering it more fully, I agree... changing like for like has the fewest question marks for compatibility. However, one thing that I will do is use my 3D printing skills to create a replacement cap with built-in cavity & lid for the LiPo battery. Given the infrequent nature of my travelling, it's likely that I'll encounter this issue again and therefore it makes sense to make it easier to replace batteries in the future. I have a PCB screw terminal left over from an earlier project which should be ideal for this application.
@@tanbrolo Just to let you know. I've just completed a project for replacing the battery in the Cowin headphones including a How To & replacement 3D parts. I'm still waiting on the replacement battery however I needed to get it all completed & ready to go as I'm travelling in late August & wanted a working pair of headphones. I'm looking at 13+hrs flight time on a budget airline which does not provide seat back entertainment. Unlike your vid, I did not pry the upper off but drilled 4 holes to detach the support posts from the inner face. I determined early on that preservation of the original upper was not necessary as I would be substituting it with a battery lid equipped replacement. Further, the original upper could not be reused in any way so it was pointless attempting to preserve it. I wanted to thank you as your vid provided me with valuable background info. I have attached a nominal charge to the project (to cover my design work) but its less than the cost of a McDonalds Happy Meal so I don't consider it excessive. cults3d.com/en/3d-model/gadget/cowin-headphones-battery-replacement
That's what usually holds electronics batteries. Double sided tape is everywhere. Fix a smartphone, it's everywhere. Doesn't take much prying to get the tape to let go.
I know how to deal with tape. I used to fix Ipads. I just wish things were constructed better. I ended up putting my headphones into noise canceling mode until they lost all power and charged them again and they work fine now.
I have the first gen but they have a removable battery. A couple years ago I bought 2 replacement batteries and charger for them and then just change them out when they get low.
I would guess that it is a swollen battery. That would make the job easier since the cover is already popped off. I'd suggest removing the battery soon as swollen batteries are more likely to ignite.
Does anybody know why my cowin E7 pro won't power on and make the noise. When I put it on Noise cancelling the light comes on but for the actual power light doesn't turn on. When I put it on charge the light indicator turns on. I don't know what to do I've been trying to find information about anything to do with the power on. I know it's not the battery it just quit working out of nowhere.
I'm wondering if there is a male/female connection (connector plugs) available on the web that would allow a new battery install without the need for soldering ??? If i fine something, I'll update this post; and if anyone else has already found a set of connectors that work, please respond back. Tanks!
@@dso2805 There's nothing for a connector to plug in to. The original battery wires run in to the headpiece and the only way to remove battery is to snip wires. I guess you could add male/female connectors but I think it would be easier to just solder for a minute every few years when battery gets replaced.
My E7 headphones just failed yesterday with a swollen battery even though I've had them for less than two years. Supposedly they have a two year warranty because I bought them direct off the Cowin website but so far I've not heard any response from my email (assuming that the website actually sent it) and their phone number fist gives you suspicious ad then forwards you to another number which plays music for a minute or so before forwarding you to a number that then disconnects. I looked up their supposed "office" location and it's a small industial park next to the Pomona Freeway and a DOT road maintenance yard in the City of Industry in the LA area. So more than a mail stop I guess but probably mostly a warehouse and shipping location. If anyone has had any luck with warranty repairs from Cowin please let me know!
@ Had you purchased your headphones through Amazon or via the Cowin website? It appears that Cowin no longer sells through Amazon though there are many other companies selling what appears to be the same product under other (or no) names.
By the way a 503450 is a little smaller (thinner) and is a full 1000mAh, 250 more than what was in it. Yes, it will change, run just fine. I did it just now.
The cover will come off! The glue is pretty firm, just be aggressive. And don't worry about scratches. These headphones are meant to be thrown out once the battery dies, so keeping them alive is good enough. :)
Hey, can I ask. I'm having an issue with my E7 where the Bluetooth and Aux won't kick on but the noise-canceling works great, it charges as normal and the switch seems fine. I barely ever took them out of their box, they mostly just sat on a cool dry shelf only to be occasionally taken out, charged and used a bit.
What the fuck did you have to do to rough up your headphones so bad?? lmao, I've had mine for years and they still look just as good as when they came out the box minus a few minor scratches on the chrome sides. Just started having problems now with it not turning on bluetooth, or playing sound with any settings....
Roughed up? Not particularly. The faux leather flakes away in time and the E7 swivels are known to break. What the fuck did you have to do to make Bluetooth not work??
@@tanbrolo I don't know man... I've had mine for years pretty much since they came out, used them extensively as the only pair of headphones I have aside from different earphones and even taken them back and forth across the country, and cleaned them hundreds of times in total, still zero signs of wear on any of that material. Unless you've had them under harsh conditions or weather, I don't see why they'd get so bad "in time". Bro you probably just don't take very good care of your shit and that's why. Without sugarcoating anything. Is that also why you have more than one pair? lol. You can't have had either pair any longer than me as I've had them since the Christmas of the year they released, and well like I said, they're in near perfect condition minus the battery, which is easily replaceable. It's nothing I did. I've had times in the past where the headphones just don't seem to connect to my device despite them being on, but with a few resets it was fine. It happens rarely, too. It's just that they aren't a perfectly designed item, not that I don't love them. Pretty sure this time it's just the battery gave out and lost most of its juice, hence why I came to your video, to see how exactly to replace it. Banter aside, thank you for making this video, and not deleting your channel despite it being dead and dustier than my great grandma's coffin 😊💀 I kid. I already ordered a new pair of identical e7 headphones by another brand and they're coming tomorrow, so I plan to sell these ones and say they just need a new battery. Oh but you can't have them though. I'm selling to a friend lol. If you want a nice clean pair of cowin e7s, good luck, godspeed! 👋🏼
Хобби
Not all heroes wear caps, you sir are one of those heroes tonight… THANK YOU for this video! Was a big help!
Thanks. I needed to understand how to open and repair a battery connection. And you helped me
Excellent video, my man. Instead of ordering a new battery I just used an 18650 cell I scavenged from an old laptop battery. Works great and now these headphones should last me another few years.
Right on! As long as the battery fits and the voltage is right, good to go. :)
Exactly what information I needed to get my headset back up and running again. Thank you so much!
Thanks! someone might be tempted to pry at the metal edge face, but that would get you nowhere as it's a a plastic wall of the earcup on the others side. You have to go at seem shown. It's a bTch, but keep at it. My battery has what looks like some thermal tape or paste on the underside. I'm wondering if I need some kind of thermal paste, but there isn't really anything on that side of the headphone beside some wire. The headphone speakers are on the opposite side of a plastic wall.
Nice DIY vid. Would like to know how to replace the ear cushions. I think they are glued in.
Have you considered doing a video of a complete breakdown?
Thanks man, one of the most articulate diy video's I have used. worked perfectly.
Happy to help! Keeps headphones out of landfills. ;)
Hey for the ear muff things your able to take them off and get replacements off I think Amazon if it starts to annoy you
This just happened to my headphones. This is a great video. Thank you so much!
I just tried to do this.
Cowin is now putting the blue/green pair of speaker wires *UNDER* the double-sided tape that holds the battery in place. They're actually gluing the red/orange pair of wires to the battery itself. Trying to remove the battery is a real struggle. I was trying to be careful but I'm pretty sure I damaged the red/orange pair of wires. With the new battery installed & charged the phones are dead. I put the old battery back and got same result. I wonder if the headphones go into a "shutdown" mode if they detect a break in the speaker wires?
pics on imgur
[SLASH] gallery [SLASH] FYgK91W
That looks fixable, my guess is the taped-together wires just aren't connecting adequately. Any chance you have a soldering iron handy?
On mine, I found out that there was a small screw underneath the white plastic piece, connecting the cover to the base. I almost broke my cover because I thought the whole thing was only held together with glue. The white piece is held on with some glue, gently lift it up and if your model has that screw, once the screw is undone, the cap should just come off. My battery was also different. It used a BL-5B battery.
Are your headphones definitely Cowin E7's? If you're seeing different design, different screws and different battery, I would guess different model.
@@tanbrolo mine is definitely a Cowin E7. Purchased it in late 2017. Don't know if there were design changes from when mine was sold.
Would have been nice if you'd showed removing the cap covering the battery... That said, knowing what is under the cap is a huge help.
A couple of questions come to mind... I wonder if instead of replacing the battery like for like if a pair of AAs could be swapped in instead? Of course, a skilled 3D print designer could probably produce a replica cover with a battery compartment... or at the very least make a removable cover to ease battery replacement (these are skills I possess).
The reason why I'm looking at this is because I bought a pair of Cowins (primarily for air travel) just prior to the Covid 19 lockdowns. Trouble is that the lockdowns happened & then air travel was hugely expensive & is still just recovering now. The upshot is that I wasn't able to use them for several years and when I tried, they wouldn't charge up.
Like yourself, I dislike wasting otherwise perfectly good equipment plus I usually fly only once a year, so this issue is likely to reoccur again (hence my interest in replaceable batteries).
I think that for simplicity, replacing with appropriate size battery is the best solution. For greater ease of future replacement, you could certainly add plug connectors to the wires. But really, wire crimping or a quick solder is not much trouble.
The cover does come off with some aggressive prying. You can see in the video where the four connections and can deduce where roughly to focus your prying. The glue is very strong. Reattaching with a weaker adhesive would simplify future disassembly.
@@tanbrolo After considering it more fully, I agree... changing like for like has the fewest question marks for compatibility.
However, one thing that I will do is use my 3D printing skills to create a replacement cap with built-in cavity & lid for the LiPo battery. Given the infrequent nature of my travelling, it's likely that I'll encounter this issue again and therefore it makes sense to make it easier to replace batteries in the future.
I have a PCB screw terminal left over from an earlier project which should be ideal for this application.
@@tanbrolo Just to let you know. I've just completed a project for replacing the battery in the Cowin headphones including a How To & replacement 3D parts.
I'm still waiting on the replacement battery however I needed to get it all completed & ready to go as I'm travelling in late August & wanted a working pair of headphones. I'm looking at 13+hrs flight time on a budget airline which does not provide seat back entertainment.
Unlike your vid, I did not pry the upper off but drilled 4 holes to detach the support posts from the inner face. I determined early on that preservation of the original upper was not necessary as I would be substituting it with a battery lid equipped replacement. Further, the original upper could not be reused in any way so it was pointless attempting to preserve it.
I wanted to thank you as your vid provided me with valuable background info. I have attached a nominal charge to the project (to cover my design work) but its less than the cost of a McDonalds Happy Meal so I don't consider it excessive.
cults3d.com/en/3d-model/gadget/cowin-headphones-battery-replacement
ugh they are held together with glue and tape? Im not sure if I want to fix them now.
That's what usually holds electronics batteries. Double sided tape is everywhere. Fix a smartphone, it's everywhere. Doesn't take much prying to get the tape to let go.
I know how to deal with tape. I used to fix Ipads. I just wish things were constructed better. I ended up putting my headphones into noise canceling mode until they lost all power and charged them again and they work fine now.
I have the first gen but they have a removable battery. A couple years ago I bought 2 replacement batteries and charger for them and then just change them out when they get low.
What is your model? These are both "E7" (gen 1 and 2) and batteries are not removable without clipping wires.
mine popped off on its own and won't go back on. worried it is swollen?
I would guess that it is a swollen battery. That would make the job easier since the cover is already popped off. I'd suggest removing the battery soon as swollen batteries are more likely to ignite.
Does anybody know why my cowin E7 pro won't power on and make the noise. When I put it on Noise cancelling the light comes on but for the actual power light doesn't turn on. When I put it on charge the light indicator turns on. I don't know what to do I've been trying to find information about anything to do with the power on. I know it's not the battery it just quit working out of nowhere.
Very helpful..... just ordered the battery
Thanx 🙂
can you show how to pry it open please?
Just pry. The glue is quite firm, and the cover may break - but in the end you'll have working headphones again.
@@tanbrolo The cover may break??? Then what???
@@dovie2blue Then...you'd have a broken cover.
@@tanbrolo And after that??
Um...bury the broken cover in the backyard and say a kind word or two about it. (figure it out dude)
What type of connector is it 1.0mm/1.25mm/1.5mm/2.0mm/2.54mm or Plug? For the battery of course.
There's no connector. Two bare wires after splicing.
@@tanbrolo ok thank you
I'm wondering if there is a male/female connection (connector plugs) available on the web that would allow a new battery install without the need for soldering ??? If i fine something, I'll update this post; and if anyone else has already found a set of connectors that work, please respond back. Tanks!
@@dso2805 There's nothing for a connector to plug in to. The original battery wires run in to the headpiece and the only way to remove battery is to snip wires. I guess you could add male/female connectors but I think it would be easier to just solder for a minute every few years when battery gets replaced.
@@tanbrolo Can I just splice and tape the wires? I don't have a soldering gun and I doubt if I can do it correctly anyway.
My E7 headphones just failed yesterday with a swollen battery even though I've had them for less than two years. Supposedly they have a two year warranty because I bought them direct off the Cowin website but so far I've not heard any response from my email (assuming that the website actually sent it) and their phone number fist gives you suspicious ad then forwards you to another number which plays music for a minute or so before forwarding you to a number that then disconnects. I looked up their supposed "office" location and it's a small industial park next to the Pomona Freeway and a DOT road maintenance yard in the City of Industry in the LA area. So more than a mail stop I guess but probably mostly a warehouse and shipping location. If anyone has had any luck with warranty repairs from Cowin please let me know!
I've had luck with Cowin. Ear swivel on one pair broke and they mailed me new ones. I had initiated contact via Amazon.
@ Had you purchased your headphones through Amazon or via the Cowin website? It appears that Cowin no longer sells through Amazon though there are many other companies selling what appears to be the same product under other (or no) names.
Thank you for your effort.
By the way a 503450 is a little smaller (thinner) and is a full 1000mAh, 250 more than what was in it. Yes, it will change, run just fine. I did it just now.
Thx, you make my day.
My Cowni E7 has a plug in battery BL-5B
Huh, that's cool. I guess they switched to an easier battery to replace? Something with a plug certainly adds convenience.
very helpful, thank you.
Mine wont pop off i tried everything
The glue is very strong. If the headphones are throw-aways as is, no harm in just going for it. Rip and pry, the left side cover should come off.
Mines wont come off at all. Now my headphones are scratched up really bad from the knife lol
The cover will come off! The glue is pretty firm, just be aggressive. And don't worry about scratches. These headphones are meant to be thrown out once the battery dies, so keeping them alive is good enough. :)
@@tanbrolo thank you! I already threw away the headphones though lol but I appreciate your help
I'm watching this video out loud because I'm fixing my headphones come on man
I replaced my foam ear muffs and foam headband
Can you share where you found your replacement pieces?
Hey, can I ask.
I'm having an issue with my E7 where the Bluetooth and Aux won't kick on but the noise-canceling works great, it charges as normal and the switch seems fine.
I barely ever took them out of their box, they mostly just sat on a cool dry shelf only to be occasionally taken out, charged and used a bit.
What the fuck did you have to do to rough up your headphones so bad?? lmao, I've had mine for years and they still look just as good as when they came out the box minus a few minor scratches on the chrome sides. Just started having problems now with it not turning on bluetooth, or playing sound with any settings....
Roughed up? Not particularly. The faux leather flakes away in time and the E7 swivels are known to break. What the fuck did you have to do to make Bluetooth not work??
@@tanbrolo I don't know man... I've had mine for years pretty much since they came out, used them extensively as the only pair of headphones I have aside from different earphones and even taken them back and forth across the country, and cleaned them hundreds of times in total, still zero signs of wear on any of that material. Unless you've had them under harsh conditions or weather, I don't see why they'd get so bad "in time". Bro you probably just don't take very good care of your shit and that's why. Without sugarcoating anything. Is that also why you have more than one pair? lol. You can't have had either pair any longer than me as I've had them since the Christmas of the year they released, and well like I said, they're in near perfect condition minus the battery, which is easily replaceable.
It's nothing I did. I've had times in the past where the headphones just don't seem to connect to my device despite them being on, but with a few resets it was fine. It happens rarely, too. It's just that they aren't a perfectly designed item, not that I don't love them. Pretty sure this time it's just the battery gave out and lost most of its juice, hence why I came to your video, to see how exactly to replace it. Banter aside, thank you for making this video, and not deleting your channel despite it being dead and dustier than my great grandma's coffin 😊💀 I kid.
I already ordered a new pair of identical e7 headphones by another brand and they're coming tomorrow, so I plan to sell these ones and say they just need a new battery. Oh but you can't have them though. I'm selling to a friend lol. If you want a nice clean pair of cowin e7s, good luck, godspeed! 👋🏼