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

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Bedini SSG Battery Charger/Desulfator



This circuit uses a 12v battery to charge other 12v batteries to a higher voltage. According to John Bedini, you are getting more out of the circuit than you put into it(Which I have not proven). The high voltage that is created to charge the 12v battery is created by the back EMF from the coil.

Circuit/Schematic located here:

http://rpmgt.org/JoinBediniList.htm

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12V Lead Acid Battery Charger(Homemade)



I took a MOT and carefully stripped out the 2000V Secondary and replaced it with a low voltage high current winding of 18-20T or 12ga wire. New fully rectified DC output is 15.8VDC. An electrolytic capacitor of 1500uf was also added for smoothing purposes(Not much smoothing is required for charging lead acid batteries). Also includes a voltage monitoring circuit which allows you to know when the voltage of the battery being charged has reached completion. A green LED will be brightly illuminated to let you know to unplug the charger.

Schematic Here:
http://tinypic.com/m/k0oy94/4

The circuit in the schematic above will connect to this automatic charging cut-off circuit, then to the battery to be charged:

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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!

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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 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!

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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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