Brilliant video, absolutely first class. Thank you for taking the time to explain the functions of the individual components that make up this circuit, this is exactly what I hoped to be able to find. I shall be looking what else you've posted! Best regards Neil.
Thank you very much. As mentioned by Kamau Perter below, explanation of each component is much appreciated. You are a rear breed I'd say. Most people give you schematics to build but its so rear to find who has true in-depth knowledge on electronics and willing to teach others. Thank you again and good luck :) ..
Thanks, Samy789, for your kind comment! By the way, please go to my Community, and find a more detailed explanation. I inadvertently have wrong in the video the values of a couple of resistors, they should be 1K instead of 10K. Please check at My Community for a an updated schematic. Take care and stay at home, please, these are difficult times.
Thank you for this video.. it explaned in detail about the electronic's connection and concept of battery charger.. i can tell that you are an experience teacher sharing your knowledge have a positive impact to our generation..one again thank you Emil from Philippines ...
Super awesome. Highly detailed instructions with very detailed explanation for each of the added components. Subscribe button clicked (my first subscription). Keep up the good work
@@kamaupeter8217 It depends on the size and degree of discharge of the battery. The idea with this charger is a slow charge rate, about ten amps. However, if the batteries to be charged are small, say those used in motorcycles, they can be charged with a five-amp transformer.
Si funciona (,, muy bien) me fue fácil hacerlo y lo probé de varias formas,, con carga y sin carga., está más que sencillo,.hay otros más complicados y con más piezas pero funcionan igual,, pues ya hice,,dos,( 2,,) más grandes para solo practicar,, pero entretiene.. Gracias amigo por su programa.
Don't forget to add a doide between positive lead and the battery positive terminal forward biased and very close to the battery positive terminal to avoid short circuit between battery and the vehicle body as an important safety measure. Accordingly charging voltage should be increased by 0.65 v.
Thank you for this video. I constructed the charger as given by the circuit. It is delivering about 16.9V. The problem is the led is not responding to the potentiometer, when I tried to set the cutoff voltage. I didn't know what to do.
Dear Pero. both the LED and the transistor are critical as to polarity. If the LED is in the wrong polarity, the relay will work but the LED will not light. On the other hand, if the transistor is bad or incorrectly connected, both the relay and the LED will not work. It is easy to tell when the relay is working, you can watch it move as you turn the potentiomenter. Please check transistor pinout and let me know what you finally got. You can take a look at a drawing about transistor pinout at my Community, ruclips.net/channel/UCmjQnuJwV0FkjdEyi3099RAcommunity?lb=UgyQr1KNTGDorZ0BdsB4AaABCQ Hope that helps!
Sir,Thanks a lot once more, it seems I placed the emitter pin of the transistor where I suppose to place the collector. I will rectify the circuit and get back to you.
Hi, Prof. Eduards! I just posted a schematic and parts list for a 48V project. Please go to my Community, this is the link: ruclips.net/user/postUgwagsAsB1mZHYmSL014AaABCQ?app=desktop . Thanks for your comment!!
Thanks, Joshua, for your kind comment!! Yes, I am an old pal. Have been around for almost 80 years now. My career is electronics, I worked a lot with circuits and industry repair work, back in the 50's and 70's. I enjoy doing something that can help someone else to decide on their career and be ready to face low times in life. Thanks again!
Dear Sam, please go to My Community in my channel, and find a schematic for converting the charger to 24 volts. A few components have to be changed, the rest stay as they are.
Hi. Great video and explanation of the theory of this battery charger. I want to build it but only have a 12 volt 5 terminal relay. How would I go about wiring the 5 terminal relay. Thanks for any information on that.
Dear Fire Bird, please find in My Community some schematics and pictorial info on relays. The llink to them is ruclips.net/channel/UCmjQnuJwV0FkjdEyi3099RAcommunity?lb=UgxcG7n42op8ZYGdF1R4AaABCQ . For an unknown reason, sometimes the link does not work, in that case, pease scroll My Community until you find it, You can also send me an e-mail address and I can send you the files.
Tank you very much for this video. But I do have a trouble on my transformer wich I have in my old charger the one I tried to fix. The secondary, it is at 38 volts out. So What will be the best thing to do ?? Thank you Fernand
Dear friend, there is a couple of things you can do: check your charger to find out it the transformer secondary has a tap. If so, connect the transformer normally to household voltage and check the secondary for a low voltage tap. If the diodes or diode bridge is connected to the ends of the winding, and if there is a center tap in it, you can use two diodes, each anode connected to one end and joining the cathodes together, you would have half the voltage using both cathodes and the center tap as output. If this is not at all possible, there is another possibility, which is often fail-proof: in series with the primary of your transformer, connect a light dimmer, you can turn the dimmer down until the output is your desired voltage, and even adjust it for fast, medium or slow charge. It is advisable to have a voltmeter in the output so you can adjust your primary voltage and thus the output voltage with precision. Take a look at my solar scheme for more details on how to wire the dimmer. This is the link to that particular video: ruclips.net/video/X8FCHPT3u6Y/видео.html&ab_channel=ChavaTarin Hope that helps.
Dear friend, I think the transistors you mention are medium power transistors, and tend to be "harder" as to Base-Emitter current, whereas 2N2222 is very low base current-rated. Hi-Power transistors can require a much different pot for adjusting cutoff. Besides, lo-power transistors are cheaper. However, you can use almost any type of NPN General Purpose transistor, as long as it drives the relay properly.
Na minha comunidade, há um diagrama com uma explicação completa em inglês ruclips.net/user/postUgzfMtif4ytBZI317Yd4AaABCQ?app=desktop Há também uma explicação em espanhol em ruclips.net/user/postUgxy2ZPxSivnALa-f6V4AaABCQ?app=desktop
Hi, Clark, please find the updated parts list and schematic at ruclips.net/user/postUgzfMtif4ytBZI317Yd4AaABCQ (there was an error in the video, in a couple of values of resistors).
It depends on the condition of the battery. If it has been sitting discharged for sometime, they tend to lose capacity due to sulfation. If your battery is not a lead-acid type, they require a special charger, otherwise they can heat up and even explode. Please beware of all these facts. I would not use it with small batteries, but only with normal car batteries, the potentiometer must be carefully adjusted for cutoff at about 14 volts. Do not leave unattended for long periods if battery warms up.
What are the reference fort that bridge diode? the other diode and the transistor.if you can give me that list of component reference.example diode reference in4001. thank too much .
Dear San 64, please go to Community section on my channel, and you will see a revised schematic (I had an error in the video for a couple of values) and please check the parts list. Those are the final values for the project, plus some additional comments. Thanks!!
Transformers are reactive devices, that is, they are mainly rated by the Volt-Ampere figure (VA), which is merely a convention to distinguish apparent power from real power. In a purely resistive device, you can get watts by simply multiplying the applied voltage times the current flowing into it. However, since transformers are reactive, and voltage is out of phase with current, this is no longer valid when it comes to watts. A transformer can be handling a high voltage and drawing a high current, but the wattage may be very low, due to the phase difference (low power factor). However, they are usually rated by their volt-ampere figures, or even just by their turn ratios and their output current. Transformers with the same sized core usually have the same VA rating. In this case, being a homemade device, and subject to experimenting and changes, the suggested VA figure would be in the secondary actual voltage times actual current, say 12V X 20A = 240VA. Watts can be much lower than that, depending on the load the transformer has to handle. In a 20A output transformer, as long as the current does not exceed 20A, the transformer can work safely. As the load increases, the power factor goes up and more real power is being drawn from the power line (real power = Amps X Volts X Power factor). For the purposes of this project, the transformer is considered as "a 20 amp transformer". Of course, the power line voltage (127V or 220V) must match the design of the transformer primary.
Dear Kamau Peter, interesting, indeed. There are several features I would like to know, for instance: do you need 50/60 hZ AC output? Would it be sine wave? Would it be high power? What do you plan to feed with the 24VAC output? I've never built such a challenging project. Most switching devices nowadays are high-frequency based inverters. Please tell me more.
Okey, I needed to add a 24v dc to my amplify when power goes out but it's challenging to me. It's like my 2.1A amplifier uses a dual power source. After fullwave rectification, voltage between +v and - v is 66v dc but voltage between +v and ground is 33v dc and - v and ground is 33v dc. Help me out how to introduce the alternative 24v dc source to the amplifier. Thanks.
This charger is intended for slow charge, so a 10 amps secondary should do. In case of need for faster charge, the transformer would have to be bigger.
Dear Maurice. All medium to high power semiconductors get hot during their operation. The heat sink is a way to convey the heat generated by the crystalline structure of the device into a highly conductive metal plate, in order to dissipate it to the atmosphere. Sometimes some conductive silicon paste is used to fill in porosity and improve the conduction. The bigger surface area of the sink, the more heat it will remove from the diode, transistor or IC chip. Heat sinks may be a piece of aluminum sheet, sometimes with cast fins to increase the surface area.
@@eltunene Sorry, what I meant to ask is, what component is the heatsink for? If its for the bridge rectifier, could I just not bolt it straight to the chassis Im building this into?
@@mauricemouton4731 Yes, of course, as long as the chassis takes the heat away from the bridge fast enough, no problem. It would be better if the chassis in contact with the bridge is not painted and even better if you can use heat conducting paste to the joint.
Dear Lino, I think it would take me some time to put it together, since I am staying at home due to health crisis, and use a few leftover parts to build my prototypes, however, it could be cheaper to buy a simple charger via eBay.
Estimable Omar. Por lo general esto sucede cuando se conecta mal el transistor. Hay varias configuraciones, EBC, BCE, ECB, si está usando el 2N2222, puede buscar la hoja de datos en hetpro-store.com/2n2222a/?gclid=CjwKCAjw9qiTBhBbEiwAp-GE0cdgrnUcuX3X2-rwipjpex5BtEU6Kxee4T1cK27nXczdc_rS56ZoUxoCoygQAvD_BwE . ¡Saludos!
@@eltunene lo conecte bien pero calienta mucho algun otro transistor que no caliente tanto al encender el rele. la tension es de 17 voltios. del cargador. gracias.-
Why is God's name wold anyone want a battery charger that can't charge dead batteries like the old ones form the last century? - Maybe you might have a point about nicad or lith batteries, but what do you do about plain ol' lead acid batteries that are in 90% of the cars that at least once in their lifetime get left overnight with the lights on. - 1/2 hour or 45 minutes on a "dumb" cjarger and it's good as new. - With the "smart" chargers (like this one) you are calling a buddy to take you to get a new battery!
Acabei de publicar na minha comunidade, este é o link ruclips.net/user/postUgxy2ZPxSivnALa-f6V4AaABCQ?app=desktop em espanhol, ruclips.net/user/postUgzfMtif4ytBZI317Yd4AaABCQ?app=desktop em inglês.
Straight forward tutorial. Thanks.
Brilliant video, absolutely first class. Thank you for taking the time to explain the functions of the individual components that make up this circuit, this is exactly what I hoped to be able to find.
I shall be looking what else you've posted!
Best regards Neil.
Thanks, Neil, I enjoy sharing whatever I do. Being a backyard scientist, I am always trying new (and vintage) things.
Thank you very much. As mentioned by Kamau Perter below, explanation of each component is much appreciated. You are a rear breed I'd say. Most people give you schematics to build but its so rear to find who has true in-depth knowledge on electronics and willing to teach others. Thank you again and good luck :) ..
Thanks, Samy789, for your kind comment! By the way, please go to my Community, and find a more detailed explanation. I inadvertently have wrong in the video the values of a couple of resistors, they should be 1K instead of 10K. Please check at My Community for a an updated schematic. Take care and stay at home, please, these are difficult times.
Thank you for this video.. it explaned in detail about the electronic's connection and concept of battery charger.. i can tell that you are an experience teacher sharing your knowledge have a positive impact to our generation..one again thank you
Emil from Philippines ...
Dear Emil, thanks a lot for your kind comment!
افضل من شرح الية الشاحن الاتوتوماتيكي ..شكرا"
Great job, easy to follow and to understand. Thank you
Thanks, Ted, for your kind comment!!!
Great presentation Chava.
Thanks, Paul, for your kind comment!!
Thank you for sharing video auto cut charger
Great video, I made charger very similar to this one, just added push button between transistor base and negative terminal so you can restart it.
Thanks, Marijan V, for your kind comment!!! Very good to add that button for restarting!!
VERY GOOD EXPLANATION VIDEO BRAVO
Thanks, John!!!
Super awesome. Highly detailed instructions with very detailed explanation for each of the added components. Subscribe button clicked (my first subscription). Keep up the good work
Thanks a lot, Dark Hypersthene, for that stimulating comment!!!
very very very good video, thank you so much
Very good, thanks so much.
Thanks, Toolman, for your kind comment!
Thank you so much.
Thanks, Pornchai, for your kind comment!!!
Beautiful detailed explanation for each function of the components sir. I love it and congratulations. Looking forward to more projects from you sir.
Thanks, Kamau Peter, for your kind comment!!!
@@eltunene What is the minimum amphearage for the step down transformer?
@@kamaupeter8217 It depends on the size and degree of discharge of the battery. The idea with this charger is a slow charge rate, about ten amps. However, if the batteries to be charged are small, say those used in motorcycles, they can be charged with a five-amp transformer.
@@eltunene Well understood sir. Thank you so much and GOD bless you.
Very nice.
Thanks a lot, for your kind comment!!
Si funciona (,, muy bien) me fue fácil hacerlo y lo probé de varias formas,, con carga y sin carga., está más que sencillo,.hay otros más complicados y con más piezas pero funcionan igual,, pues ya hice,,dos,( 2,,) más grandes para solo practicar,, pero entretiene.. Gracias amigo por su programa.
awesome video, i cannot tell you how long it took to find someone explaining the component level schematic of a charger!!!!
Thanks very much for your kind and stimulating comment!!!!
Don't forget to add a doide between positive lead and the battery positive terminal forward biased and very close to the battery positive terminal to avoid short circuit between battery and the vehicle body as an important safety measure. Accordingly charging voltage should be increased by 0.65 v.
Good point!!
Thank you very must
Thank you, Purwadi, for your kind comment!!
Thanks
Thank you, for your kind comment!!!
Thank you for this video. I constructed the charger as given by the circuit. It is delivering about 16.9V. The problem is the led is not responding to the potentiometer, when I tried to set the cutoff voltage. I didn't know what to do.
Dear Pero. both the LED and the transistor are critical as to polarity. If the LED is in the wrong polarity, the relay will work but the LED will not light. On the other hand, if the transistor is bad or incorrectly connected, both the relay and the LED will not work. It is easy to tell when the relay is working, you can watch it move as you turn the potentiomenter. Please check transistor pinout and let me know what you finally got. You can take a look at a drawing about transistor pinout at my Community, ruclips.net/channel/UCmjQnuJwV0FkjdEyi3099RAcommunity?lb=UgyQr1KNTGDorZ0BdsB4AaABCQ Hope that helps!
Sir,Thanks a lot once more, it seems I placed the emitter pin of the transistor where I suppose to place the collector. I will rectify the circuit and get back to you.
Obrigado e bom dia 🤝🤝🤝🤝
Very clear and very informative! May I please ask if I will be charging 48v 20Ah SLA battery, what parts need to be changed based on your Parts List?
Hi, Prof. Eduards! I just posted a schematic and parts list for a 48V project. Please go to my Community, this is the link: ruclips.net/user/postUgwagsAsB1mZHYmSL014AaABCQ?app=desktop . Thanks for your comment!!
@@eltunene > Thank you very much! More power to you!
@@eltunene l
👍👍👍
Thanks, Fideplast!!!
sounds like you r old guy.. but thank you so much for useful video.. i learned something as a bigenner.
Thanks, Joshua, for your kind comment!! Yes, I am an old pal. Have been around for almost 80 years now. My career is electronics, I worked a lot with circuits and industry repair work, back in the 50's and 70's. I enjoy doing something that can help someone else to decide on their career and be ready to face low times in life. Thanks again!
I would add an analog gauge to monitor charging voltage.
Good idea!!
Can you make it like this for 24V car battery ..? and what are all the components to use
Dear Sam, please go to My Community in my channel, and find a schematic for converting the charger to 24 volts. A few components have to be changed, the rest stay as they are.
Hi. Great video and explanation of the theory of this battery charger. I want to build it but only have a 12 volt 5 terminal relay. How would I go about wiring the 5 terminal relay. Thanks for any information on that.
Dear Fire Bird, please find in My Community some schematics and pictorial info on relays. The llink to them is ruclips.net/channel/UCmjQnuJwV0FkjdEyi3099RAcommunity?lb=UgxcG7n42op8ZYGdF1R4AaABCQ . For an unknown reason, sometimes the link does not work, in that case, pease scroll My Community until you find it, You can also send me an e-mail address and I can send you the files.
Thanks, will do that cause I'm very interested in making this smart battery charger.
Tank you very much for this video.
But I do have a trouble on my transformer wich I have in my old charger the one I tried to fix. The secondary, it is at 38 volts out. So What will be the best thing to do ??
Thank you Fernand
Dear friend, there is a couple of things you can do: check your charger to find out it the transformer secondary has a tap. If so, connect the transformer normally to household voltage and check the secondary for a low voltage tap. If the diodes or diode bridge is connected to the ends of the winding, and if there is a center tap in it, you can use two diodes, each anode connected to one end and joining the cathodes together, you would have half the voltage using both cathodes and the center tap as output. If this is not at all possible, there is another possibility, which is often fail-proof: in series with the primary of your transformer, connect a light dimmer, you can turn the dimmer down until the output is your desired voltage, and even adjust it for fast, medium or slow charge. It is advisable to have a voltmeter in the output so you can adjust your primary voltage and thus the output voltage with precision. Take a look at my solar scheme for more details on how to wire the dimmer. This is the link to that particular video: ruclips.net/video/X8FCHPT3u6Y/видео.html&ab_channel=ChavaTarin Hope that helps.
Obrigado. 🇧🇷🇧🇷🇧🇷🇧🇷🇧🇷🇧🇷🇧🇷
Obrigado pelo seu gentil comentário!!
@@eltunene por nada vou construir o seu projeto.
Good video. Dear friend, could you tell please - is it possible to use transistors 2N3055 and D880 ?
Dear friend, I think the transistors you mention are medium power transistors, and tend to be "harder" as to Base-Emitter current, whereas 2N2222 is very low base current-rated. Hi-Power transistors can require a much different pot for adjusting cutoff. Besides, lo-power transistors are cheaper. However, you can use almost any type of NPN General Purpose transistor, as long as it drives the relay properly.
How about the number of one transistor,,,,
Everything well and I understand clearly. But I like to know what's the number of transistor please
2N2222, a very common NPN general purpose, low power transistor. Thanks for your kind comment!!!
Thank you so much for your cooperation.. I gonna make your channel subscribe
Tem como colocar o esquema pra gente colocar na plaquinha 👍👍👍
Na minha comunidade, há um diagrama com uma explicação completa em inglês ruclips.net/user/postUgzfMtif4ytBZI317Yd4AaABCQ?app=desktop
Há também uma explicação em espanhol em ruclips.net/user/postUgxy2ZPxSivnALa-f6V4AaABCQ?app=desktop
What is the value of transistor you install tnx..
Hi, Clark, please find the updated parts list and schematic at ruclips.net/user/postUgzfMtif4ytBZI317Yd4AaABCQ (there was an error in the video, in a couple of values of resistors).
Its the same sercute for charging 12v 7ah battery sir?
It depends on the condition of the battery. If it has been sitting discharged for sometime, they tend to lose capacity due to sulfation. If your battery is not a lead-acid type, they require a special charger, otherwise they can heat up and even explode. Please beware of all these facts. I would not use it with small batteries, but only with normal car batteries, the potentiometer must be carefully adjusted for cutoff at about 14 volts. Do not leave unattended for long periods if battery warms up.
@@eltunene thanks sir for your reply, i respected 😊😊
What are the reference fort that bridge diode? the other diode and the transistor.if you can give me that list of component reference.example diode reference in4001. thank too much .
Dear San 64, please go to Community section on my channel, and you will see a revised schematic (I had an error in the video for a couple of values) and please check the parts list. Those are the final values for the project, plus some additional comments. Thanks!!
Thanks guy i really appreciate you and really need the list of component😊👍👍👍
what is wattage of tranfromer
Transformers are reactive devices, that is, they are mainly rated by the Volt-Ampere figure (VA), which is merely a convention to distinguish apparent power from real power. In a purely resistive device, you can get watts by simply multiplying the applied voltage times the current flowing into it. However, since transformers are reactive, and voltage is out of phase with current, this is no longer valid when it comes to watts. A transformer can be handling a high voltage and drawing a high current, but the wattage may be very low, due to the phase difference (low power factor). However, they are usually rated by their volt-ampere figures, or even just by their turn ratios and their output current. Transformers with the same sized core usually have the same VA rating. In this case, being a homemade device, and subject to experimenting and changes, the suggested VA figure would be in the secondary actual voltage times actual current, say 12V X 20A = 240VA. Watts can be much lower than that, depending on the load the transformer has to handle. In a 20A output transformer, as long as the current does not exceed 20A, the transformer can work safely. As the load increases, the power factor goes up and more real power is being drawn from the power line (real power = Amps X Volts X Power factor).
For the purposes of this project, the transformer is considered as "a 20 amp transformer". Of course, the power line voltage (127V or 220V) must match the design of the transformer primary.
Sir in circut diagram you have mentioned 1kohms and even variable resistor is also you mentioned 1kohms but in photo both are 10kohms pls clarify.
Sorry, it should be 1K, My mistake! I have a schematic at my community, ruclips.net/user/postUgzfMtif4ytBZI317Yd4AaABCQ with the values updated.
@@eltunene thank you Sir then variable pot must 10k is it correct I am going to try it Sir don't think I found mistake I want to make one
@@mahendranchacko2062 Please check my updated schematic at ruclips.net/user/postUgzfMtif4ytBZI317Yd4AaABCQ in my community. Thanks!
1:48 perlelel
1:59 perlelel
Hello sir. Am looking for a circuit that will convert 24v DC to 24v AC. kindly help. Thanks.
Dear Kamau Peter, interesting, indeed. There are several features I would like to know, for instance: do you need 50/60 hZ AC output? Would it be sine wave? Would it be high power? What do you plan to feed with the 24VAC output? I've never built such a challenging project. Most switching devices nowadays are high-frequency based inverters. Please tell me more.
Okey, I needed to add a 24v dc to my amplify when power goes out but it's challenging to me. It's like my 2.1A amplifier uses a dual power source. After fullwave rectification, voltage between +v and - v is 66v dc but voltage between +v and ground is 33v dc and - v and ground is 33v dc. Help me out how to introduce the alternative 24v dc source to the amplifier. Thanks.
transformer current ?
This charger is intended for slow charge, so a 10 amps secondary should do. In case of need for faster charge, the transformer would have to be bigger.
What is the heatsink for?
Dear Maurice. All medium to high power semiconductors get hot during their operation. The heat sink is a way to convey the heat generated by the crystalline structure of the device into a highly conductive metal plate, in order to dissipate it to the atmosphere. Sometimes some conductive silicon paste is used to fill in porosity and improve the conduction. The bigger surface area of the sink, the more heat it will remove from the diode, transistor or IC chip. Heat sinks may be a piece of aluminum sheet, sometimes with cast fins to increase the surface area.
@@eltunene Sorry, what I meant to ask is, what component is the heatsink for? If its for the bridge rectifier, could I just not bolt it straight to the chassis Im building this into?
@@mauricemouton4731 Yes, of course, as long as the chassis takes the heat away from the bridge fast enough, no problem. It would be better if the chassis in contact with the bridge is not painted and even better if you can use heat conducting paste to the joint.
You did not mention the value of its component needed please!
Dear Nestor, please check at the video description, since there was an error in a couple of values in the video.
How much if I will order home made car battery charger?
Dear Lino, I think it would take me some time to put it together, since I am staying at home due to health crisis, and use a few leftover parts to build my prototypes, however, it could be cheaper to buy a simple charger via eBay.
@@eltunene thank you... God bless
Life time capacity sir
I am sorry. What do you mean?
@@eltunene sir your project continue to work but, life time of our project
NO ME FUNCIONO
Estimable Omar. Por lo general esto sucede cuando se conecta mal el transistor. Hay varias configuraciones, EBC, BCE, ECB, si está usando el 2N2222, puede buscar la hoja de datos en hetpro-store.com/2n2222a/?gclid=CjwKCAjw9qiTBhBbEiwAp-GE0cdgrnUcuX3X2-rwipjpex5BtEU6Kxee4T1cK27nXczdc_rS56ZoUxoCoygQAvD_BwE . ¡Saludos!
@@eltunene lo conecte bien pero calienta mucho algun otro transistor que no caliente tanto al encender el rele. la tension es de 17 voltios. del cargador. gracias.-
Why is God's name wold anyone want a battery charger that can't charge dead batteries like the old ones form the last century? - Maybe you might have a point about nicad or lith batteries, but what do you do about plain ol' lead acid batteries that are in 90% of the cars that at least once in their lifetime get left overnight with the lights on. - 1/2 hour or 45 minutes on a "dumb" cjarger and it's good as new. - With the "smart" chargers (like this one) you are calling a buddy to take you to get a new battery!
Ou você mandar por email srgsales@hotmail.com
Acabei de publicar na minha comunidade, este é o link ruclips.net/user/postUgxy2ZPxSivnALa-f6V4AaABCQ?app=desktop em espanhol, ruclips.net/user/postUgzfMtif4ytBZI317Yd4AaABCQ?app=desktop em inglês.