Excellent & Simple Battery Charger (Gel/Lead Acid/Li-Ion/+ more)



This circuit has been in use for 24 hours a day over the past 4-6 months. It operates perfectly. I used this circuit to charge two 18650 Li-Ion batteries for my cordless vacuum cleaner. You can charge many different battery types with this circuit. If you charge (2) Li-Ion batteries in series as I did, be sure to affix a 3A/ 70-90 degree Celsius thermal fuse between both batteries using thermal heatsink compound and foil tape. The fuse will then be wired in series with the 2 batteries. Also set charger output voltage to 8.33V – 8.36V, and use a 1 ohm resistor in the circuit.

Schematic here:

http://www.talkingelectronics.com/projects/200TrCcts/101-200TrCcts.html#84B

Thanks For Watching!

***If you enjoy watching my videos, please show your support by SUBSCRIBING, POSTING LINKS to my videos on other websites & blogs, rating a “THUMBS UP”, and watching my video playlists. Doing so helps to ensure that many more videos will be released in the future. (Views are essential to ensure this channel remains in an active state)***

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SCA Automatic Car Battery Charger Review (12V 6A)



*This is an unpaid, non-sponsored review*

In this video I review an automatic car battery charger and measure how affective it’s 7 stage charge cycle is but monitoring it’s voltage and current.

Teardown video: https://youtu.be/69Ub0hnyVuI

Product page: http://www.supercheapauto.com.au/online-store/products/SCA-Battery-Charger-7-Stage-12-Volt-6-Amp.aspx?pid=343262

Patreon link: https://www.patreon.com/nfm

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Which Way Does Current Flow From A Battery?



CATCH ON Which way does current flow from a battery?

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9V Alkaline Battery Charging Circuit(Also 1.5v Cells)



Learn how to make a good alkaline battery charger which is NOT likely to cause the batteries to leak or bulge, and will charge them properly. Though alkaline batteries are not intended to be recharged, they do seem to recharge well using this circuit. I put together this circuit from information obtained from the web page below. The circuit shown in the video was designed for 9V batteries, but you can also charge 1.5V (AA/AAA/AAAA)batteries by lowering the power supply voltage. The batteries are charged using low current DC pulses.

http://en.wikipedia.org/wiki/Recharging_alkaline_batteries

Schematic is here:

http://tinypic.com/m/k0oya1/4

For fully charged 9V LED indicator circuit:

http://tinypic.com/m/k0oydz/4

Thanks For Watching! Please SHARE with others, rate THUMBS UP, and SUBSCRIBE.

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Inductive Battery Charging Circuit (NiMH/NiCd)



Learn how to make a simple inductive battery charger for your NiMH/NiCd rechargeable batteries(2 to 4). The circuit in the video is for charging (2) batteries in series. This circuit operates in a very similar way as an ultrasonic toothbrush charger. The charging rate is slow(25-30mA), which can be made higher if desired, but it does charge well. The toothbrush charger uses a PWM IC to produce the high frequency pulses (75khz) into the primary winding with feedback to adjust the output under load, and this circuit uses a 555 IC to produce 42-46khz pulses into the primary winding to simplify the circuit. The transformerless power supply shown in this video is designed to power the exact circuit shown in this video. If you modify the primary winding and the circuit draws more current, then you will have to modify the transformerless power supply to deliver more current. You can also power the circuit using a very small 12V transformer. Don’t be afraid to experiment with different coils/windings!

**To support this channel, please share these videos with others, post links to this video as well as my other videos on other websites and blogs, and SUBSCRIBE.**

Thank You For Watching!

Link to Charger Schematic:

http://tinypic.com/m/k0oydw/4

Link to Transformerless Power Supply:

http://tinypic.com/m/k0oydv/4

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Homemade 12V to 48V DC-DC Converter Battery Charger for Electric Scooter/Bike



This is a PC board I made so I can charge a 48V seal lead acid battery from any 12VDC source. This design is simple and uses an off-the-shelf audio crossover coil. It charges my battery from a 12V source that gets switched on once the sun goes down. In the morning my batteries are ready to go and it didn’t cost me anything. Energy from the sun. However I can use with and 12V source that can provide 2-3 amps of power. There is a special circuit that will stop the SMPS once the battery level low around 11 volts. Next day the sun comes up and charges the 12V battery.

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Homemade 6V / 2.5 Amp Power Supply/Battery Charger



If your looking for a HIGHLY efficient (6VDC 2.5A / 6VAC 3.0A) power supply or 6V lead acid battery charger, then look no further. This power supply/charger is made using a 120V (MOT) microwave oven transformer, by performing the modifications shown in this video. 120V transformer current at idle(NO LOAD) only draws 30mA, and using a full 2.5A load, 200mA. NO heating issues of the core whatsoever. As usual, always be very careful when working with 120VAC/240VAC projects!

Thanks For Watching!

***If you enjoy watching my videos, please show your support by SUBSCRIBING, POSTING LINKS to my videos on other websites & blogs, rating a “THUMBS UP”, and watching my video playlists. Doing so helps to ensure that many more videos will be released in the future. (Views are essential to ensure this channel remains in an active state)***

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Simple Adjustable Constant Current Battery Charger



If your looking for a simple yet effective circuit for charging your NiCd/NiMh battery packs or individual batteries at a set rate, then this circuit is what you looking for.

Circuit here:

http://tinypic.com/m/k0oxzm/4

Thanks For Watching!

***If you enjoy watching my videos, please show your support by SUBSCRIBING, POSTING LINKS to my videos on other websites & blogs, rating a “THUMBS UP”, and watching my video playlists. Doing so helps to ensure that many more videos will be released in the future. (Views are essential to ensure this channel remains in an active state)***

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Homemade battery charger constant current test



NOTICE: replicate this experiment can be very dangerous, only by people with knowledge of electricity.
This charger made ​​at home is very reliable in charge, it provides stable current to charge for all the time. When a battery provides stable current, it increases the power outlet. This power supply is simple to implement, it can be done in a few minutes..

* Only disadvantage: the terminals of the battery are in contact with the mains voltage, be careful when connecting!

** The current supplied by the battery charger with a 100 W light bulb 220 V is approximately 0.320 mA. By inserting in parallel other bulbs you can change the current charge.

*** For over 80 years this way of charging is known. This video is just a simple
demonstration of a different way to recharge, but it is not to be taken into consideration, it can not eliminate the traditional battery chargers..

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Sealed lead acid battery charging – requested



Please read! YouTube user Ciprianwiner wanted to know more about what I use to charge my sealed lead acid battery, so here it is.

http://www.youtube.com/Ciprianwiner

The charger is a Numax 1 amp 12v sealed lead acid battery charger. I paid around £20 for it from a local battery specialist (Manbat) where as it would usually cost £35 on-line.

I am not saying that you never charge a sealed lead acid type with a car battery charger but I would advise being careful or using some sort of current limiting as once you have a gassing sealed battery from too much charging current its pretty much downhill from there in terms of capacity.

Usually you can find datasheets online from the battery manufacturers website with all of the charging specs for your specific battery.

Also it is common to see the battery’s voltage read well into the 13v range when it is taken off charge (I have even seen as high as 13.6v stay for a while!). But once you put a load on them it will come back down.

Quite a dull and boring video really!

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