Make a Solar Battery Charger in 5min




Use a garden lamp to charge batteries. This lamp cost $4.00. I used it to charge the batteries for my beard trimmer.

Step 1:

Take out the three screws holding the unit together.

Step 2:

Insert the battery you wish to charge. Mine was an AAA, so I had to strech the spring and pop the positive connector out and reposition it.
Then just put it back together and place it in the sun for a day or two. You'll have to take the battery out before it gets dark or it will light up and use power. I suppose you could cut the wires to the diode if all you need it for is charging.



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    8 Discussions


    4 years ago on Introduction

    That's really cool, man! Will this or similar charger
    work for my electric beard trimmer? I usually use a lithium-ion battery for beard trimmer to be able to groom my beard in my office, car or
    even on a camp side. But charging my trimmer in the sun sounds yet more cool to
    me! Do you have any idea about how I can manage that?

    pancho del rancho

    9 years ago on Step 2

    u no how it has the positive and negative will it charge a cell phone if u connect them like a phone chrger strip and put the wires together and negative with nagitive do u think it will have enough to charge


    9 years ago on Introduction

    If you get the larger yard light ,and cut the wires to one and attach both to a battery would it not charge it in one day. I use a yard light solar charger to power a flash light that I keep in the car,made as above and it works very well. .

    2 replies
    Asa Jmaruawe

    Reply 9 years ago on Introduction

    Probably, it depends on the mah of the battery and how much the panel puts out. I havn't really done a lot of testing or calculations to know exactly whats going on. I'm sure there are people on here who could tell you in a heartbeat.

    maruaweAsa J

    Reply 9 years ago on Introduction

    i found cheap yard lights at target to try this approach with a in line switch for the light Hopefully someone can give us both the particulars