Awesome Video. Thank You! Saved a lot of time. Very happy to have my ER224 back :). One recommendation in the process, to avoid damaging the black rear shell; Skip removal at 2:59 to 3:30 and insert that segment after 4:00. This will give you access to all the black rear shell tabs, and it can be easily removed. Found a battery on Amazon, replacement model: CS-PRT300SL | Paid $15.

Dude, your video is a lifesaver. Impossible to do it without it. Big thanks!

While this video is pretty good. There is a spring for the dial mechanism to lock it into each position. Long part with a "V" in the middle and 90 degrees bend at each end. When putting the trimmer back together. Put this in the plastic bracket on the left side of the main trimmer body before putting the adjustment mechanism back on. Then install the wheel parts back in place.

Thanks for making this video. For anyone interested in doing this, the battery is 1.2v instead of 1.8v. Even though I ordered a new battery, I took the original battery out and charged it on my intellicharger and seemed to bring it back to life. If you're going to go to the trouble of opening it up anyway, that might be something to try before buying a new battery. I also had the issue of the vibrating metal rod not moving so I oiled the blades and smacked the body of the razor against the palm of my hand while it was running and it seemed to knock it back in place and runs like a champ now.

Carlos, Many thanks, an excellent video! Replaced the battery with no problems and no damaged parts. Another 6 years use since we still haven't found a newer replacement. TTFN

Carlos, aunque no lo creas me sirvió de mucho, no sabía ni como retirar la "navaja", solo era en mi caso "mantenimiento", o sea retirar el cabello acumulado, se trababa y no hacia su movimiento, ya quedó muy bien, dios bendiga a gente que como tú se dan el tiempo y la tarea se subir un vídeo tan explicativo e importante para la comunidad, nuevamente, dios te bendiga, saludos desde Monterrey, Nuevo León, México

Great video! You save me a ton of time trying to figure out how to open this thing. I really appreciate it.

Great video! Thanks a lot! Your explanations prevented me from breaking my razor! Battery is now replaced!

Thanks for the video! I wouldn't have been able to figure out how to take this trimmer apart myself. It's like a puzzle. The battery is still good on mine, but the blades stopped moving, even though you could still hear the motor. It turns out that the metal output "gear" that gets pressed onto the motor shaft became loose over time, and the motor shaft was just spinning inside this "gear". It's not really a gear - it's a small block of metal that has an offset pin to produce the linear back and forth motion of the blades from the rotational motion of the motor. To fix the loose shaft, I just cut a small narrow piece of heavy duty aluminum foil (about the width of the shaft hole in the output "gear" and about 5mm long), placed it over the hole, then pressed the motor shaft back into the hole. If you don't have heavy duty aluminum foil, you can use two strips of regular aluminum foil, or whatever else you can successfully wedge into the hole alongside the shaft. You may also want to de-grease the end of the motor shaft before you press it back into the hole. I just put a few drops of isopropyl alcohol onto a paper towel, and turned on the motor while pinching the paper towel onto the shaft. After pressing the output "gear" back onto the motor shaft you will want to turn the motor on while holding the "gear" to test how strong the wedged fit is.

Thank you for this video. I replaced the battery and also rinsed the entire enclosement and soaked it in barbicide. Now it looks good as new and the trimmer sounds like a beast once again. I can't wait to trim my hair. One thing though the only battery replacement I found was on eBay and it was not cheap, almost $30. But I love this trimmer and don't really want to use anything else so I bought the battery anyway. If anyone has found a cheaper replacement please let us know.

Thank you! This video prevented my shaver from being thrown out. I replaced the original battery with a higher capacity NiMH battery and it now lasts as long as I would like it to :)

thank you, excellent video! I always wondered how to disassemble this thing...

Que video tan bueno. Congratulations Carlos Pineiro

Thanks a lot for the video. Disassembly is really not easy. Very useful.

Excelente explicación. Gracias

This may help with disassembly cutecamcase.com/images/er224b.jpg The trimer does work if you bend the tabs in and use a 1.5v AA battery, you do need to use a rechargeable AA battery

Just replace mine successfully. Thank you so much.

Wonderfull Dude, thank you so much

What's the battery part#? I can't find it.

obrigado Carlos!

Could you tell me battery specs so I could search online? Also, w my trimmer, not even the red charging light turns on when I connect it to a plug. Is that because the battery is dead? Thanks a lot for the video!

I asm pretty handy but that looks like a lot of tedious work. I found complete new units online for $29.95 with free shipping. Every so often the removable silver comb breaks and I have to spend 8 bucks to replace it. So, here I get the new battery and silver comb with a new shaver for $30. The problem with my current shaver is the pin that shakes the blade back and forth gets stuck and hums without moving. I have to keep pulling the top blade/plastic section off and push the pin around. As soon as I add the shaver blade back it stalls again. This is also how I break the comb from taking it on and off again. If you know how to free up that pin let me know.

I can't find this trimmer chager can you please help me for this

What’s the battery model & size and where to buy?

Thanks for the great video. I need to replace my battery but can't find one on-line. Where did you get yours?

Yo desarme mi máquina pero quiero saber cómo ensambla la cuchilla de mi máquina er224

Thanks for making this video. The battery on mine just died and I wondering how to dismantle it properly.

Where can we find the battery online?

WTH. I guess Panasonic really didn't want anyone to replace the battery.