How to Make USB Rechargeable 9V Li-Ion Battery 

I didn’t think this would be a good video, but the optical fibre trick definitely was a stroke of genius. Great video.

thanks for the idea, i did this without the fiber optic and the switch! i would like to note that its very important for the 9V battery to have a plastic casing. mine had an aluminium casing and it was very difficult to work with. so yea for the people who are looking to do the same mod just get a battery with plastic casing..

i also did this same project but i set mine to 9.6v to maintain the voltage hold the multimeter when the lipo goes low voltage. by the way love your technique with the optical fiber, now i would try that.

what kind of camera do you use for your vlog?

I seen this times ,still i don't get bored!... Great execution ...I loved the optical fibre part !!!

Excellent one to do. Show this idea to Duracell is a must. Way to go!

👌🌹افرین چه طرح خوبی من از این ماژول ها دارم اما بفکرم نرسیده بود این کار رو انجام بدم و باطری ۹ ولت شارژی داشته باشم ممنون بابت کلیپ اموزنه و خوبتون .خیلی ها فقط ویدیو های کلک در یوتوب میزارن اما شما یه روش عالی رو به اشتراک گذاشتی .

Dmn! Very clever idea! Also with the optical fiber for the LED... Thumbs up!!!

I like the fibre optic, great work

Can u find an alternative for the fibre optic can u replace it with an led

What diameter fibre optic cable did you use ????

Can you send the model of the module used?

Optical fiber trick was pretty ingenious 👍👍👍

Using a step-up converter has some disadvantages (with low currents, self discharging, capacity at all). Most of the 9V Li-Ion blocks, which you can buy, are using 2s, also not ideal (voltage was to low), but slightly better for low current and log term usage (which is the typical usage for remote control or measurement equipment).

Bro, what kind of glue used for fiber optic over led indicators?

I'm affraid the battery 102535 ( 10x25x35 mm.) that you state in the list of needed materials does NOT FIT togheter with the step up boost and the switch into the standard 9 volt battery case. This jeopardises all your fantastic work !

Great idea, but I think the "Battery" wont last very long if the device isn´t in use for a longer time, because the intecrated circuitboard will use little energy even when not in use, and taking it out everytime to switch it off isn´t very usefull. A better way will be using the good old Ni-MH rechargeable batteries.

Pls note that 9v step up converter doesn't support over discharge protection. You'll destroy you're lipo if you're not checking voltage regularly.

A będzie taki przetwornik od ładowarki? Will there be such a converter from the charger?

Do you charge the battery with 5v charger for mobiles?

This is a great idea, thanks for sharing! Question: if the switch is on but no load (i.e. multimeter or whatever is off), will the battery still discharge?

Great video, where did you get the screw driver? LOL I cant find a 9v plastic case anywhere. My wife is ready to kill me stripping all the 9v batteries from the casings LOL

such batteries should be created in series is a really good idea

929/5000 the video is very well-made and clear. But may be serious problem with this project. In practice inside the battery there is a step-up and this is what allowing to have 9 real volts, while the batteries with two li-ion elements have only 7.2V. These i great but it should have 3 defects and the third is dangerous: 1- the space dedicated to the battery is greatly reduced and therefore also the capacity. If the 102535 battery is 800mAh, the 9 volt virtual battery will have this value divided by 2.5 (which is the ratio between 3.7v and 9v) and decreased by the efficiency of the step-up converter: let's say about 350mAh. However 1, 5 times the best Ni-Mh batteries which however are 8.4 v and not 9. This is not the major problem 2 - if I have not misunderstood the switch is used to turn on/off the connection of battery and so the converter. So if we don't use our equipment it will be better to open it and turn off the converter which even if it consumes little but in a month would drain the battery without having used the tool at all. This for instruments where the battery is housed with a screw lock can be very inconvenient 3 - Do you know that there is "No over-discharge protection " in the circuit that you have used? do tou have an idea of what can happen?? I do not think so. The user of your project has no way of understanding when the lithium battery is running out also because the step-up continues to maintain the external voltage at 9 volts by completely discharging the lithium battery. Do you know what happens by discharging the lithium battery completely? in the best case you destroy the battery, in the worst case it can also catch fire.

I always knew this guy was a genius, I wish you have a great future 😊

That's a pretty neat idea, I wasn't aware of this module until now. Thanks for sharing!

Can anyone tell me the function of the switch?

Aapko jo multimeter use karte ho kaun sa hai video mein

Nice brother ..good concept ...keep doing ...nice work

Net wat ik nodig had!

the module have low voltage protection ??

That's a good project instead of disposing used up batteries, you make them reusable by modding it

Thanks for showing me how to do it so I can save money for my smoke alarm

Can you do this in 5v Battery?

Nice Project Mate!!

But which battery used please tell name

Kid: Asks Mum if he can do this Mum: NO

Nice work bro!! but the boost circuit on the module will damage your battery without a low voltage protection board. The module drains battery to 0.9v

To what is the switch playing roll in this battery?

必须给你点赞，用光纤把指示灯引出来，太聪明了。

There is no way I could cut the holes and fit the guts in the case without doing a mess, burning my fingers and cutting myself. Congrats.

Nice job

Can I get that step integrated module in Flipkart.. if so can anyone send the link plzzzz..

Clever thing gotta admit, but how long does it last?

Congratulations, fantastic,, wonderful.. too good to be true. Hello from Venezuela.

wow Awesome idea!i will try

Please tell me where you get the the charging module circuit

HOw many days using it battery?

Good, thank you. You can use only two li-ion battery. You must be use white tape for fiber optic.

It's very useful to do !

Can we use the battery during recharging

Şarj makinesinin icinin kablolarının bağlama tekniği vermi Yani bir sırası falan

Спасибо большое за информацию 💥🌟💥🌟 Thanks for video 💥🌟💥🌟

اين اجد دي الشريحه الرجاء الرد

Bro Can you please tell me which machine you are using at 2:42

ok, it's rechargeable, but how long does the battery last? I don't think that Li-po is gonna have the milliamp hour capacity to power anything for long.

Fantastic work, bro! Really nice! 😃

This is the best 😃😎

Wow awesome your bulid quality always professional...👍

Please name the board which you have used

a adjuster you use how much voltage can take from battery Can I give 7.4V to board from battery

Fantastic video, I also made one

Nicely done!

Bro battery charger ka name kiya hay

You linked to a high discharge lipoly battery. I would reccomend a liion, because liion's are more energy dense tha lipoly.

Like 👍

Sir why used you plastic whire in video end and tep please reply sir please

Я такую батарейку для мультиметру сделал сам по схеме из журнала Радио за 2017 год номер 1.

Bro make a video on what to do with old battery

Good Job. Thanks for sharing ;-)

Nicely done

You need to turn the battery on first? Not practical if yes..

自製萬應充電電池! 簡單又實用! 小巧好攜帶! 市面上的充電電池百萬種 有的是比較昂貴難以下手== 想充電時拿出你的手機線 就可以充電囉！ 自製萬應充電電池 簡單又實用!

from were do we get ckt used in this vedio

Why you make the switch and the light

As a matter of fact if you follow the link, the battery shown is 902530 ( supposedly 9x25x30 mm) which in any case would not fit together with the booster

That is unbelievable! Love it! I never saw that

Супер идея👍 Что за плата ?

hi, I have a question.... when you charge the battery, the LED change color when is full?

Circuit kaha se mila hai

I danced through the entire video...

Why my new charger have high voltage to my phone? Hmm how can i connect my phone to my new charger that said that has high voltage

Where from get this bettery

Very good project i make a 9v power bank for internet router with this trick.... Thank you

this will eliminate my annoying smoke detectors.

This kind module will drain battery dry in a week! Personally i'm using two lipo cellphone batteries in series, so my multimeter can run for a year on a single charge.

Which camera u use bro

Is it possible to charge this battery?

using fiber for the light was smart as fuck ngl.

Woww...amazing..

创意无限，赞！！

Everything you do is really nice

This is amazing idea!

Good job. It's hard/difficult to do so. Buying one from the store near my home may be justified.

Y they use optical fibre

Please say what is its connections

such a great idea! I will make one

1:53 I realised my life is a lie

Black battry ka price kya hai

what happens if you charge it too much?