Вставка
- Опубліковано 16 лип 2024
- This is a new version of the Li-ion battery pack for Fluke 19x scopemeters.
CORRECTION: the label on the battery pack should have said 6300 mAh. The donor pack was 3s2p, and I tested each PAIR before building the pack, and measured about 4200 each. But then the pack was reconfigured as 2s3p. Sorry about this confusion.
Previous video: • #95 - Fluke 19x Li-ion... - Наука та технологія
CORRECTION: the label on the battery pack should have said 6300 mAh. The donor pack was 3s2p, and I tested each PAIR before building the pack, and measured about 4200 each. But then the pack was reconfigured as 2s3p. Sorry about this confusion.
Excelent information, tks máster.
A complete schematic of the pack would be helpful, inclusive of dimensions and CD weld tab locations.
Great job! To me it seems better than factory! Regards from Italy.
Excellent, excellent work. Nice job. If I get a 199c, this is the exact guide I'll be referring to. Thanks.
This is not a bad scope meter- it’s nice that the probes are completely isolated, so you don’t need to worry about having an isolation transformer to prevent your scope from blowing up. The software features of the scope are antiquated, but for basic troubleshooting it’s quite okay.
Looks great 👍
Wow. New life for the 199C. Great @FeedbackLoop
Great looking, cheers.
Good work, I need to try a similar approach with my Fluke 123
Nice tidy fix.
Excellent job. OEM quality if not more so.
Perfect. I go to make same solution for my 199C.
Btw, You tried connect over serial port to this scopemeter?
I missing sticker with serial number and hope that it can be reach from device.
Great mod! Can you pls. provide the link to the small BMS-board with balancing? I know there are so many on ebay or ali etc. - but to find the right one is difficult ;-)
Very neat and professional, especially with the PVC heat shrink which I now need to go buy. I didn't know multi-cell packs could be partially (?) balanced, I'm guessing this pack is a series of two sets of three-parallel cells?
yes, 2s3p configuration. why partially?
@@feedback-loop I meant to imply that in parallel you can't control cell charging currents individually, although its clear voltages are well controlled. I put a (?) to imply I know little about cell chemistry or charging, and perhaps this isn't a problem except in catastrophic failures like a shorted cell.
what is the value of the thermal fuse ?
Thank you for the time you put in this, I will surely upgrade my 199c
I would suggest 100-110 degrees C. Does not matter much. Just some additional protection.
Keep an eye on it though if you're not using it for a longer time. Depending on the topology of the balancing module, it might drain the battery or half of it.
I've seen various 4 cell balancing boards now, that where fitted by the manufacturer of batteries that actually drained 1 or 2 cells.
Здравствуйте, у меня та же проблема и тоже не хочется покупать новую NiMH батарею. Можно вас попросить поподробнее дать информацию:
1) Какие из проводов штатного разъёма куда идут? Красный-Чёрный толстый - белый - чёрный тонкий
2) Что за модуль BMS - ссылку на Али или где брали?
3) Схему новых соединений, если можно.
4) Как теперь осуществляется зарядка, если батареи другого типа? Годится ли штатный блок питания?
5) Какие батареи использовались?
Я думаю запитать прибор от 2-х батареек 26650 - LiFePO4 - как вы думаете: это возможно без переделки прибора и блока питания?
Большое спасибо заранее за любой ответ.
EN: Same problem here, don't want new NiMH, would likee to use newer batteries like LiPo or LiFePO4. Could you give more information please:
1) Which wires of the original jack mean what?
2) Where did you take the BMS featured (link if possible)?
3) A diagram of new system would be great
4) The type of batteries is different now. I wonder if the original power supply (designed for NiMH) works for LiXX batteries or how do you charge?
5) what is exactly the type of your batteries?
I am thinking of using 2S out of 26650 LiFePO4 cells I have - do you think it is possible? Will it work and charge? Could you suggest a BMS or is it possible just to plug + and - into the existing jack, what do you think?
(I understand It will not be nearly as neet as your setup, but who cares, if it is buried inside the scope...)
Thank you very much in advance!
Good evening, I need advice to repair a Sorensen Lh-75-5 power source, I am sending you a video of the fault, I am from Mexico, I hope I make myself understood, thank you very much, 🤝
ua-cam.com/video/eAEJ3shQKjY/v-deo.html
In this link watch The vídeo of Sorensen failure tks Master 🤝
Hello,
I wonder were do you get the schematics?
I cant find them.
what schematics?
Hi
I tried it but I have no voltage between pin 1 and (2-4)on the 4 pins connector. But I have 8,2v between B+ and B-
Are the pin P- and B- should be tied together ? I Measure about 1 Megohm between these two pins.....
in some of these modules it is necessary to apply battery charging voltage between P+ and P- to start working
@@je1966 Absolutely, I tried that and it started working. Not much info on these modules...
You say to discharge the pack before installing. I though you couldn't discharge li-on without ruining it?
I did not propose over-discharging it. Healthy discharge to 2.8V - 3V (per cell). That should make it much safer to handle
Me han regalado un Fluke 199C en teoría porque no funciona; he montado un pack de baterías Ni-Mh nuevas y aparentemente funciona bien cuando se conecta el cargador (carga las baterías perfectamente) pero con las baterías ya cargadas con 8,4V y el cargador desconectado al poco rato el indicador de estado de baterías aparece con la cruz y el equipo se apaga .
He fabricado un pack de dos baterías de litio de 3,7V y 5000mA y con las resistencia en paralelo que aconseja en uno de sus vídeos y sucede lo mismo. los datos que puedo aportar son los siguientes:
Con las baterías de litio cargadas a tope el indicador de estado de baterías muestra la cruz de batería baja cuando su valor baja a 7,5V
El valor de BATVOLT siempre es 0,3xVBAT
La carga media en R4101 corresponde más o menos a 1Ah
El voltaje en R4113 es más o menos 8,46V
¿Dada la experiencia que usted tiene con este equipo sería tan amable de darme alguna idea de lo que puede estar pasando?
Please tell me, after installing the battery, you need to do Battery Refresh?
No. This refresh is for NiMH batteries. They need a full discharge-charge cycle from time to time.
@@feedback-loop Thanks for the answer, there is another important question, in the last video you showed the battery discharge after assembly, whether the battery discharge corresponds and on the oscilloscope itself the battery discharge pattern is in the upper right corner of the screen where the icon shows how much charge is left. ua-cam.com/video/Lnkz2z6KjG8/v-deo.html
@@saidgusainov6252 Again I don't understand your question.
@@feedback-loop Does the battery indicator show the correct battery level?
@@saidgusainov6252 Not quite, and I showed that in detail in the video you linked above. Why are you asking if you know exactly where it was explained?
Surely this video is only useful if you share a link to the board used
Any link he provides will be dead in few weeks. Try searching eBay for, "2S BMS balance."
I bought 2 pieces for $12 here: www.ebay.com/itm/224775236238
@@FlyingShotsman surely if I didn’t know to try that term in Google search why would I even own an oscilloscope let alone take it apart to change the battery typology
Please tell me, at the moment 2s3p is connected ? Are the battery connections in series or parallel? each battery must be 4200mA ?
Yes, 2s3p. What else it can be? 6 cells with 8.4V target voltage. There is no other way. The middle point is connected to BMS as well, that means common middle point: 3p + 3p. Otherwise you would have 3 separate middle points, right? And which one would you connect to the BMS?
@@feedback-loop Yes, you are right, you get a connection like in a native battery? I just don’t want to damage the device, it’s better to ask than to look for the cause of the breakdown later.
@@saidgusainov6252 The original NiMH battery is one string of 6 cells (6s1p). Each cell is about 1.2-1.4V
@@feedback-loop Yes, you are right, I understand your connections, you have a serial-parallel connection.
@@feedback-loop What should be the capacity of each battery?
Hello, thanks for the video and info.What should the value of R4113 be for a charge voltage of 8,4 volts?
he said 120k in parallel to the existing one
Without schematic you can talk bla, bla, bla. I'm sorry it's not useful. I'm going to another video.