Introduction: How to Make a Cheap Ni-cd,ni-mh Usb Charger
I know its not cheap to buy
an ni-cd,ni-mh charger so why not make one
Step 1: Materials
you wil need
batteries
battery holder(mine was salvaged from an old toy)
old usb connector
usb charger
optional:
soldering iron
solder
Step 2: Cutting
cut the end of the usb it will reveal wires cut it all except red and black wires
Step 3: Joining
tie or solder the red wire to the positive terminal and blaack to negative
Step 4: Testing
connect it to the charger
plug the charger
try to put an led to test it but be careful
it might damage your led and it heats
Step 5: Watching
watch the video
Attachments
Step 6: Enjoying
enjoy for and be happy see you
Step 7: Message
when done charging do not let the usb connected to your charger for a long time it might
discharge your battery.
you can also charge carbon batteries just put an eye to it.
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if you have questions just feel free to comment
thanks

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4 Comments
10 years ago on Introduction
just wanna add something,
this would have been better if there are indicators that :
the batteries were compatible or still capable of being charged
the batteries were charging
and the batteries were fully charged.
10 years ago on Introduction
there is a link you just have to click and download it first.
10 years ago
watch what video? I dont see a link...
2 years ago
How can I be sure on how much current is this improvised assembly getting into the batteries? Is 5V the correct voltage to charge 2 x 1,5V NiMH batteries? Will this be a quick or a slow charge? How will this affect to the wear? What USB charger current are you using? Is there an overcharge or temp protection? ... And finally: is it sure to use?