Thanks your video saved a huge embarrassment, I was about to take my Bosch unit back because I thought it wasn’t working. 👍🏻🏴󠁧󠁢󠁳󠁣󠁴󠁿

@drcheongtv

Жыл бұрын

Your most welcome, glad that it helps..

Dear sir, you are a super hero, thank you so much!

@drcheongtv

2 жыл бұрын

Tqvm for your comments...

thanks a lot.. i just bought this c7 batt charger & the same thing happened. really grateful for your video. keep up the good work & thanks again for sharing this method👍👍👍👍👍👍

@drcheongtv

2 жыл бұрын

Tqvm for your kind words Ali. Really encouraging.. Tq again

This really helped me figure out how to get a flat battery going and how to "fix" the C7. Well done.

@drcheongtv

6 ай бұрын

Your most welcome. Thanks for the feedback

Thank you for this video. Very helpful.

@drcheongtv

2 жыл бұрын

Tqvm for your comments

Great video & very helpful indeed 👍

@drcheongtv

2 жыл бұрын

Tqvm for the comments

You saved my day, thank you so much 😊

@drcheongtv

Жыл бұрын

Im so happy to hear that

Thanks for sharing. Really useful. C7 will automatically detect & charging the battery if it still have around 7.5v and above. For C3, 6v is the lowest.

@drcheongtv

2 жыл бұрын

Wow, you know much better than me. I called Bosch support center and none of them able to advise me. I was about to sent for warranty claim.. Thanks alot for sharing

Thank you.. your video was so useful

@drcheongtv

2 жыл бұрын

Tqvm for ur comments

Thank you for the info! You saved a C7 charger, a battery and my patience 😀

@drcheongtv

4 ай бұрын

Your most welcome

Saved my time. Thank you doctor from 🇮🇳

@drcheongtv

8 ай бұрын

Your most welcome

Terbaik...sgt membantu saya

@drcheongtv

Жыл бұрын

Terima kasih banyak banyak

Thanks for sharing very useful knowledge

@drcheongtv

2 жыл бұрын

Tq Danish, it was a lucky discovery actually. I was about to sent my unit for warranty claim.. Lol

Grazie. Video utilissimo!

@drcheongtv

Жыл бұрын

Prego 🙏🙏🙏

great information 😊... thanks👍👍👍...

@drcheongtv

Жыл бұрын

Tqvm for the support

Thanks for the Video. Helped a Lot❤. Wonder why in the Instructions Manual it asks to select 'R' for Charging fully dead batteries

@drcheongtv

9 ай бұрын

Yup, I also wondering why... Lol

And hello. So I tested your trick on empty battery, and everything is ok. Thanks again 😉 .

@drcheongtv

Жыл бұрын

Tqvm for the confirmation

Nice. Looking for this for so long

@drcheongtv

Жыл бұрын

Tqvm for the comments

Thank you for sharing👍

@drcheongtv

Жыл бұрын

Your most welcome

Good Idea Thank You. In Thailand no This Information

@drcheongtv

9 ай бұрын

You are most welcome

Thankyou for your video. In my case, the battery only have 6v left. So,when i try to use adaptor mode,it will cancel and return to standby mode. Luckily, i have another car. I jump the battery first. After around 10 minutes, the voltage was around 12v and decreasing. I quickly connect to C7 charger and choose regen mode. And i did it. Bosch assume that 7.5v and lower is not worth to regen and charge,but i will give it a try.

@drcheongtv

Жыл бұрын

Oh, that is a new findings. Thanks for the sharing Hilmi.

@flybywirekennel

Жыл бұрын

This was in my case as well, when the voltage drops under 7v the C7 will not able to charge the battery, all of the functions are useless than. It does not better than the C3

@hilmijalil3413

Жыл бұрын

@@flybywirekennel following my case before. The battery still works fine till today. Good news for me. Had been using the battery from end of 2017.now 82k km already. Hitachi 55d23l.

@flybywirekennel

Жыл бұрын

@@hilmijalil3413 i see, so if you wanted to use the c7 with a flat battery get another charger or or jump start from another battery, and than you are able to use the c7.... that makes c7 still useless

Thank youuuu!

@drcheongtv

4 ай бұрын

Your most welcome

Thank you!!!!

@drcheongtv

5 ай бұрын

Ur most welcome

You are a genius

@drcheongtv

2 жыл бұрын

Tqvm for the comments

Thank u bro

@drcheongtv

2 жыл бұрын

Your most welcome

Great video 👍👍

@drcheongtv

7 ай бұрын

Tqvm for the comments

Ну так либо режим питания включить, либо параллельно в цепь поставить еще один АКБ такой, чтобы напряжение было достаточным для режима зарядки - в руководстве же написано, что при глубоком разряде уходит в защиту.

Thank you

@drcheongtv

2 ай бұрын

Your most welcome

Very helpful tip

@drcheongtv

11 ай бұрын

Tqvm for ur feedback

@mahendrajoshi2086

11 ай бұрын

​ I tried to attempt my dead battery charging after putting C7 in that particular mode only for 30 minutes.. And attempted charging mode.. It worked.. Just sharing my experience. Thank you so much.. It saved me time and effort to unplug the battery and to take it to a shop for charging. 😊

@drcheongtv

11 ай бұрын

Ya. Lol.. I also discovered by accident

Bit too long but overall very usefull, thanks

@drcheongtv

2 жыл бұрын

Tqvm for ur comments Robert

Thanks, just get it done.

@drcheongtv

2 жыл бұрын

Tq for the comments

Dear Friend, is bosch c7 powerful to repair for sulfated battery? I have 12 Volt 72 amper EFB car battery

@drcheongtv

2 жыл бұрын

Jus to be honest with you, if the battery is end of life, example performance degraded due to prolong usage, it cannot be revive/repair..Bosch c7 only good if the battery still good but the car was unused for long time OR the car having some issue in charging the battery by itself

In my case mode button wasn't doing anything and whenever I switched to power supply mode it would quickly switch back to standby. I had to disconnect the car cables from the battery, then run the C7 on power supply mode for few minutes (when you hold the mode button for 3 seconds) and finally then the mode button started to work.

@drcheongtv

8 ай бұрын

Wow, this is new to me. Thanks for sharing. Will try it out nxt time.. Tqvm

When I hold down the mode button, it switches to that regeneration mode for a second and then goes out of it, any advice?

@drcheongtv

2 жыл бұрын

Hi Ari, if battery totally drained, u can only choose the adaptor icon and not other functions..

So for a flat battery just use the adapter mode then charge like normal right? So no need to use the regeneration mode right?

@drcheongtv

6 ай бұрын

Yes, use adaptor mode to pump it abit of electricity into the flat battery and later change to normal charging. Tq

@fakhruddinothman748

6 ай бұрын

@@drcheongtv for 12v motorcycle battery how long does it need to fully charge? And can you stop the charging midway etc like when we go out of house for a bit?

@drcheongtv

6 ай бұрын

I believe it should take less than 4hours and yes, u can stop it midway.

Merci beaucoup pour l'astuce . J'ai été confronté à ce problème et ai du charger un peu la batterie avec mon chargeur de moto avant de pouvoir recharger avec le C7 . Est-ce normal qu'à la fin de la charge , le voyant bleu s'allume , maintien de charge ? Quoiqu'il en soit encore merci à vous , je testerai si la batterie est vide . Salutations . Or Google traduction 😁: Thanks a lot for the tip. I ran into this issue and had to charge the battery a bit with my motorcycle charger before I could charge with the C7. Is it normal that at the end of the charge, the blue light comes on, charge maintenance? Anyway thank you again, I will test if the battery is empty. Cheers .

@drcheongtv

Жыл бұрын

Lol, tqvm for the google translate. May I know you are from which country? Nice knowing you. Do let us know the result after your test. As i know l, end of the charging, the light should be blinking.

@BATMANVISION

Жыл бұрын

@@drcheongtv From France . When I connect the battery to the charger, flawless, but at the end the light turns blue, maybe this indicates that the charger is in sleep mode. And as I think I have a loss of current on the car, the charger wakes up on its own (like a big 🤣). I'll leave it plugged in and check.

@drcheongtv

Жыл бұрын

🤣 Nice knowing u. So far my one is blinking when it fully charged. Maybe if i leave it longer, it will turn to blue sleep mode..

Thank you. Useful. But I ran the video at 2x speed. Just too much repetitions 😴

@drcheongtv

2 жыл бұрын

Tq for your suggestions, will improve in futuere..

I have a question, Can I play 12V music system direct over c7 charger without battery?

@drcheongtv

Жыл бұрын

Logically when you use the adapter mode thru C7 charger to maintain the electrical components settings in ur car, ur music player should be workable. Honestly i never tried b4. Do let me know the result. Tey read the user manual on how to use the adapter mode correctly. Tq

@basvantkondalwade250

Жыл бұрын

@@drcheongtv thanks for your supportive reply ❤

@drcheongtv

Жыл бұрын

Your most welcome

On my flat battery I tried to push mode selection buttom longer, but does not stay in adapter mode it's blink yellow for 1 seconds than immediately switch back to blue, stand by mode. Only my old battery charger was able to charge it, which does not have electronics

@drcheongtv

Жыл бұрын

Strange, coz my old battery was totally drained off for many months n yet the adapter mode work..

@flybywirekennel

Жыл бұрын

@@drcheongtv i double checked the fuse, it was okey

I suggest to put word 'regeneration' in the title so people can find your video to solve this issue.

@drcheongtv

2 жыл бұрын

Tqvm for ur advise..

If the same thing happens with the bosch c3 charger what should i do???

@drcheongtv

Жыл бұрын

Im not familiar with C3 but logically should be the same. Switch it to adapter mode n let it connect with the drained battery for 30mins to 1hour and try again This time should work

Thankssssssssssssss. Ur my hero. Hahaha 🤣🤣👍👍👍

@drcheongtv

2 жыл бұрын

Tqtq

Why you didn't put it from the first time at R ( the regeneration mode )

@drcheongtv

2 жыл бұрын

Thanks for ur comments. I hav used this multiple time and always can use the normal charging. 1st time experience the total drained battery, hence no experience..

How do we understand that charging has done yet ? How long does it take for full charge

@drcheongtv

Жыл бұрын

It will depend, usually btwn 3 to 6 hours. Once completed it will stop at the last stage.. Green.

@cantoplar

Жыл бұрын

@@drcheongtv Thanks Dr 😀

Hey can i charge AGM battery using normal mode ?

@drcheongtv

2 жыл бұрын

kzread.info/dash/bejne/qGmbrNObZbG7Ypc.html

@drcheongtv

2 жыл бұрын

You can refer to this video for details functions. But y you want to charge an AGM battery using normal mode? This model came with AGM charger

@sinongol7116

2 жыл бұрын

@@drcheongtv thanks bro , i just wanted to know is there any difference charging the AGM battery using AGM mode and normal mode.

@drcheongtv

2 жыл бұрын

So far i hav not tried it yet..lol..unable to comment on that.. Thanks alot for your comments ya..

If the device battery voltage is below 7.5 volts, it will not start the process and will not allow the mode selection, it can be taken to power supply mode, because you put it in this mode, the device increases the voltage of the battery and exceeds 7.5 volts for charging and you select the mode and start charging, I recommend you to read the user manual.

@drcheongtv

Жыл бұрын

Thanks alot for the advise, i might have missed it.

Can I leave it connected for a long period of time? I don’t drive my car at all, maybe once in 2 months or so.

@drcheongtv

Жыл бұрын

Normally we should remove after max 8 to 10 hours of charging

@Moe1985

Жыл бұрын

@@drcheongtv Thanks for your answer. I read the user manual, it says after the battery is fully charged, it would activate pulse mode which would charge the battery if the volts dropped below 12.8 - I read that it would make the device very warm. My concern is the device would melt. Thoughts?

@drcheongtv

Жыл бұрын

Maybe it applicable for cooler country, for Malaysia is super hot. I personally won't leave it stay connected for toooo long. Do let me know the result of you tried it ya..

@Moe1985

Жыл бұрын

@@drcheongtv Ended up getting the Ctek, it’s connected to my car’s battery since yesterday. No issues yet! Thanks a lot for your help.

@drcheongtv

Жыл бұрын

Good to hear that.

What if you charge lithium ion batteries?

@drcheongtv

6 ай бұрын

Thanks for ur question, as I know, Bosch C7 can use to charge wet cell, dry cell, gel type, AGM battery But cannot charge lithium ion batteries. So answer is No.

And for the c3, any solution?

@drcheongtv

2 ай бұрын

Sorry I dnt have C3 charge but I guess should be similar concept. Hav u try it?

@heldermartins4855

2 ай бұрын

@@drcheongtv it doesn't have the option you have, i could trigger the green mode with a 9volt batterie. Now i have 2 options, one green and says the batterie is completely charged and the blue one. Nothing happen after

@drcheongtv

2 ай бұрын

Usually this happened when ur battery totally drained off hence bosch unable to detect it as a battery. C7 will hav the adaptor mode to pump in some amount of electric to the battery but sadly C3 dnt have that mode, hence I'm not sure what we can do with the C3 model.

@heldermartins4855

2 ай бұрын

​ @drcheongtv i bought the CTEK MXS 5.0, its charging. The bosch i will give to my father to maintain the batteries he has! The bosch its a bit a waste of money.

@drcheongtv

2 ай бұрын

Good to hear that, at least ur father can still use it

What is the R function?

@drcheongtv

2 жыл бұрын

Sorry for the late reply Shibli, R mode is used for battery that very low in battery but still hav certain percentage voltage in it. If your battery is total flat, 0% battery, R mode will not work. You need to use the adaptor function to charge in some voltage before use R or normal charging. For R mode, Bosch will pump in higher percentage of voltage for initial charging to revive ur battery Watch link below for details kzread.info/dash/bejne/qGmbrNObZbG7Ypc.html

@drcheongtv

2 жыл бұрын

kzread.info/dash/bejne/qGmbrNObZbG7Ypc.html

@Riman1984

2 жыл бұрын

Это режим десульфатации. Он используется для сильно разряженных АКБ (долго стояли разряженными и пластины сульфатировались). Не рекомендуется для исправных т.к. высокое напряжение испортит АКБ больше чем принесет пользы.

@drcheongtv

2 жыл бұрын

Yup you are right, it went into protection mode due to too low voltage.

My recharger give only 1.5A. How to set to 7A?

@drcheongtv

2 жыл бұрын

Sorry, where do u see the 1.5A?

@solidsnake123100

2 жыл бұрын

@@drcheongtv clamp multimeter

@drcheongtv

2 жыл бұрын

We cannot make changes to the Amp actually. If you found away to do it, pls yeah me as well ya. Tq

You are explaining to much make your video simple and short

@drcheongtv

Жыл бұрын

Noted, thanks for ur feedback

This also must put in bosch manual. They forgot the solution for this issue. The manual must learn about it from u. 😱🤣

@drcheongtv

2 жыл бұрын

😂😂

saya sudah mencoba kedua cara tersebut tetapi lampu mode nya (agm, regenerate, power supply) tetap tidak menyala,

@drcheongtv

Жыл бұрын

Mungkin battery kereta sudah rosak. Boleh try hantar ke bengkel untuk recharge. Kalau boleh recharge, erti charger ada problem

Mode 4 | Regeneration mode (16V boost) Suitable for the regeneration of batteries after short-term extreme discharge. The battery should be disconnected from the vehicle electrical system. For batteries with a capacity of more than 14 Ah. Press the mode selection button (8) to select Mode 4. The LEDs (12+15) will light up. If no fur- ther action is taken, then regeneration mode starts automatically after several seconds and the LED (15) flashes. If the battery is more or less complete- ly flat, the LED (15) may flash for up to 3 hours. During this period, a constant current level of 1500 mA flows into the battery to restore its capacity. Regeneration mode is deactivated after a maximum of four hours. If the battery has still not been fully charged, the charger switches to a normal charging mode. After successful charging of the battery, the LED will light up (11) and (10) go out. After a short delay the unit switches automatically to trickle charge mode and the LED (11) flashes. Note: This mode is only suitable for 12 V batteries Note: In this mode the battery must be completely charged! Do not interrupt the charging process prematurely.

@drcheongtv

2 жыл бұрын

Tqvm for ur details explanation and sharing...

Yes it works. Yet another incomplete user manual!....

@drcheongtv

Жыл бұрын

Great that it works for u

Wrong! You should choose mode R to regenerate your totally flat battery

@drcheongtv

2 жыл бұрын

You r right. Now i know it after went thru the experience of total flat battery. Previously i hav no issue selecting charging but now i know this normal charging will not work for total flat battery. Need to select R...

You sad 47 times that : “The battery is flat “ 47 times!!!! 😂😂😂😂😂😂

@drcheongtv

11 ай бұрын

Lol... Tqvm for counting..

@bodijani

11 ай бұрын

@@drcheongtv But hey ! You helped me a LOT!!!!❤️😉🙏

@drcheongtv

11 ай бұрын

I love ur feedback :) and most welcome

Amatir