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Originally Posted by R-ice
oh man I hope this isn't an old thread.. i dont need another warning...
but I believe it would be a bad charger, because i have brought back electronics from japan when I was there and vice versa, brought cell phone back and charged it a whole buncha times and it didn't fry in fact its still working, problem with it is it doesn't work on our networks i just charged it back to show people the pics I took on it. Brought back sony md player recorder thingy.. and that thing charges fine.. still works after 2 years of use. now this sounds stupid but i brought my OLD digi cam to japan and that changed fine and i got back and it still works. 100-110 shouldn't be that much of a difference. I brought back some other stuff like oh laptop... sony vaio..
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A lot of Li-ion/poly battery electronic devices like cell phones, digital cameras, MP3 players, and laptops have switching power supplies with active power factor correction rated at 100-240V 50/60hz which I believe will work in every country with a simple physical connection adapter (no conversion circutry, just strictly the type of plug). On the other hand, a lot of cheaper AC/DC adapters, generally for less expensive products have specific power requirements. Clearly when they say 100V, they mean 100V. Because of electric standards and certifications, the power specification written on a product is correct. This way, they cannot be held liable for people putting 110V into a product rated at 100V input. Regardless of whether the charger works on 110V or not, that doesn't change the fact that it is designed for 100V and cannot be expected to perform optimally at voltages except 100V. Whether "optimally" means that some units fail at 110V or not, it is undoubtable that it is safer to NOT use this device on 110V outlets.