Mr Motivator Posted June 14, 2006 Report Share Posted June 14, 2006 I'm currently charging my 5V pocket pc with my cd player 4.5V charger. Will it damage it in some crazy way? I wouldn't have thought so.? Quote Link to comment Share on other sites More sharing options...
quick_spider Posted June 14, 2006 Report Share Posted June 14, 2006 Why are you asking now?It wont charge it to the proper voltage and chances are you'll probably never will be able to again. You normally charge batteries at a higher voltage than they output.Jon Quote Link to comment Share on other sites More sharing options...
Mr Motivator Posted June 14, 2006 Author Report Share Posted June 14, 2006 Why are you asking now?It wont charge it to the proper voltage and chances are you'll probably never will be able to again. You normally charge batteries at a higher voltage than they output.JonWell you see that is what I was thinking.I've unplugged it now. The pc was getting a bit warm. Quote Link to comment Share on other sites More sharing options...
Extreme_biker0 Posted June 14, 2006 Report Share Posted June 14, 2006 Is the standard input voltage of the pocket pc 5V?If so 4.5V won't hurt it. I run a slightly lower voltage one in my car cos it was cheaper. Just takes longer to charge. Havn't noticed any bad effects. Quote Link to comment Share on other sites More sharing options...
Danny Posted June 15, 2006 Report Share Posted June 15, 2006 Another major factor is the amount of current. Some chargers output lots more than others and too much will damage the battery. Quote Link to comment Share on other sites More sharing options...
Alexx Posted June 15, 2006 Report Share Posted June 15, 2006 Another major factor is the amount of current. Some chargers output lots more than others and too much will damage the battery.Yeah, the fact it's 4.5 V just means it takes longer to charge, nothing else.It's the current of the charger you need to compare, if it's higher then it's not a good idea - if it's lower then just charging it once with it isn't going to do anything though lol.I got like 1 charger that I just charge everything off and it'd never done any of my stuff any harm lolEDIT: why the hell am I the Queen of the gays ? Quote Link to comment Share on other sites More sharing options...
Extreme_biker0 Posted June 15, 2006 Report Share Posted June 15, 2006 (edited) Another major factor is the amount of current. Some chargers output lots more than others and too much will damage the battery.Yeah, the fact it's 4.5 V just means it takes longer to charge, nothing else.It's the current of the charger you need to compare, if it's higher then it's not a good idea - if it's lower then just charging it once with it isn't going to do anything though lol.That's complete bullshit mate! The rated current is just the maximum that the charger can output. If the voltage is correct or lower, the battery isn't going to draw any more current than normal is it!?Think of electricity like water in a pipe. Voltage is the preassure of the water around the pipe, and current, quite obviously, is the amount of water travelling around the wires. The battery being charged is like a valve letting the water through and getting energy from it to charge itself up.Voltage is the main thing to watch out for. Increasing the voltage is like increasing the water preasssure. It will force more water around the system (increase the current!). This is a bad thing and will damage the battery.You cannot say that you have increased the current to the battery by putting it on a higher current charger. The current is decided by the resistance in the battery and the voltage. You can only increase the current by increasing the voltage (water preasure!) and therefore forcing more electricity (water) around the system.Geddit!? Edited June 15, 2006 by Extreme_biker0 Quote Link to comment Share on other sites More sharing options...
Alexx Posted June 15, 2006 Report Share Posted June 15, 2006 You cannot say that you have increased the current to the battery by putting it on a higher current charger. I didn't say that I'm aware of the whole V=IR crap. But basically what your saying is I can use like my mentally powerfull powerdrill charger to charge my mobile phone or power my laptop? Doesn't sounds like much of a good idea to me... it gets hot as f**k just charging it off my other laptops charger thats got like a slightly higher rating. Plus I'm pretty sure you can get Constant Current chargers.Surely by your own expliantion you're just elaborating on what I said? Have a charger with a massive current output isn't a good idea, a 5v charger with 20A current output charging a 4v 0.5A device for example, the current is going to remain proportional to the voltage, so even if your only drawing 4.5v off it, your still drawing a hell of a lot of current?Anyway the point I was making was using a lower voltage charger will just take longer... I can't actually remember all the stuff about current relating to voltage...Doesn't bode too well for someone who just sat A level physics today, and has A level electronics tomorow does it Quote Link to comment Share on other sites More sharing options...
Extreme_biker0 Posted June 16, 2006 Report Share Posted June 16, 2006 (edited) But basically what your saying is I can use like my mentally powerfull powerdrill charger to charge my mobile phone or power my laptop? Doesn't sounds like much of a good idea to me... Exactly. you live and learn, today you learned that voltage is key.Doesn't bode too well for someone who just sat A level physics today, and has A level electronics tomorow does itNo, it doesn't. As a 20 year old i feel past my years saying this, but man what the f**k? The fact that people are coming out of acedemic facilities with qualifications supporting there supposed excellence in subjects they know not that much about is frankly scary.A lot of money gets done down these educational facilities, and for what?!God this should be in the too drunk and just got in thread not this thread! Sorry for being a biartch! Edited June 16, 2006 by Extreme_biker0 Quote Link to comment Share on other sites More sharing options...
Alexx Posted June 16, 2006 Report Share Posted June 16, 2006 Because electronics is dull as f**k, somwhere on a par with general studies. I'll be lucky to get a mark in it, i'll get like A, A, A in my other subjects, then an E or U or something Quote Link to comment Share on other sites More sharing options...
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