Re: power inverter to charge digital camera battery, maybe recharge laptop

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Re: power inverter to charge digital camera battery, maybe recharge laptop
BillW50 24 April 2005 20:33:38
	"News Reader" <SLCUUVKKQKKI@spammotel.com> wrote in message news:1114357136.345668.32430@g14g2000cwa.googlegroups.com... Date: 24 Apr 2005 08:38:56 -0700 I just picked up a Linksys Power2Go power inverter. All I really want to do is recharge my digital camera battery using the AC adapter that came with it (this is one of those Canon S400s). I may also want to recharge my laptop (Thinkpad T42) but can probably live with recharging it while off and won't need to use it while it's on the inverter. The Linksys instructions say that the car must be running when the inverter is on? Can this be right? It depends a lot of the capacity of the car battery and the power being drawn from it. If your car has a volt meter (or a multimeter), just check it a lot at first. Most cars will still start when the voltage drops down to around 11 volts. Although I'd never let it drop below 12 volts until you know your car well. I'm going to be at a campsite for a few days and won't be running the car (it will just be parked). Do I really have to turn on the ignition and let the car idle while I'm recharging things? Thanks My power inverter will turn itself off if the voltage drops around 10.8v I believe. And supposedly that will leave enough power to restart the car. Your power inverter doesn't say anything about this? Got one of those jump start batteries? As that will jump start the car if the battery drops too low. I use one and it has never failed me yet. I also have a Marine battery installed in my van instead of a standard battery. As Marine batteries are designed to be discharged and then recharged regularly. Regular car batteries don't like deep discharges too well. Cheers! __________________________________________________ Bill (using a Toshiba 2595XDVD under Windows 2000) -- written and edited within WordStar 5.0
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Mike Romain 24 April 2005 23:25:45 [ permanent link ]
	The inverter draws too much power to safely use without the alternator unless you have a second battery or a boost source. Why not just get the automotive adapter that works off 12 volts DC and plug it in to the lighter socket? That still can get dangerous, but it draws 'way' less power than an inverter. The inverter is going to 120 AC, then back to 9 VDC or 6 VDC or what every you need, all those steps eat power. Mike 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 88 Cherokee 235 BFG AT's News Reader wrote:> I just picked up a Linksys Power2Go power inverter. All I really want> to do is recharge my digital camera battery using the AC adapter that> came with it (this is one of those Canon S400s). I may also want to> recharge my laptop (Thinkpad T42) but can probably live with recharging> it while off and won't need to use it while it's on the inverter.> The Linksys instructions say that the car must be running when the> inverter is on?> Can this be right?> I'm going to be at a campsite for a few days and won't be running the> car (it will just be parked). Do I really have to turn on the ignition> and let the car idle while I'm recharging things?> Thanks
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Barry Watzman 25 April 2005 05:38:19 [ permanent link ]
	The only reason that the car should be running is to avoid having a dead car battery. You don't have to run the car, but the power draw from the inverter can be substantial, and it can run down the battery relatively quickly. Not in minutes, probabably, but I certainly would not use it overnight. However, charging the digital camera will use an almost negligibe amount of power. [Actually, for the digital camera, you can probably find a cigarette lighter plug that will work directly (without the inverter). You can find such a power supply for the laptop, also. But there is a big difference: The camera charger will draw 5 to 10 watts, the computer power adapater might draw as much as 150 watts. Major difference.] News Reader wrote: I just picked up a Linksys Power2Go power inverter. All I really want> to do is recharge my digital camera battery using the AC adapter that> came with it (this is one of those Canon S400s). I may also want to> recharge my laptop (Thinkpad T42) but can probably live with recharging> it while off and won't need to use it while it's on the inverter.> The Linksys instructions say that the car must be running when the> inverter is on?> Can this be right?> I'm going to be at a campsite for a few days and won't be running the> car (it will just be parked). Do I really have to turn on the ignition> and let the car idle while I'm recharging things?> Thanks>
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Mike Romain 25 April 2005 18:08:07 [ permanent link ]
	mike wrote:> Mike Romain wrote:> > The inverter draws too much power to safely use without the alternator> > unless you have a second battery or a boost source.> > Why not just get the automotive adapter that works off 12 volts DC and> > plug it in to the lighter socket? That still can get dangerous, but it> > draws 'way' less power than an inverter.> I'll challenge that statement. My inverter draws 60mA at 12V unloaded.> Efficiency is over 80%. Yes there's loss, but very little practical> difference in whether your car will start when you're done. Ok, that is all fine and dandy but only means with no draw (just plugged in) you are already killing the battery. What you need to compare is the AC adaptor draw on your inverter to the correct DC adapter drawing on your battery. Mike It's still a bad idea to run ANYTHING off your car battery when you're> the only vehicle out in the boonies. I always take along a 12 pound> gas generator.> mike> The inverter is going to 120> > AC, then back to 9 VDC or 6 VDC or what every you need, all those steps> > eat power.> > Mike> > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00> > 88 Cherokee 235 BFG AT's> > News Reader wrote:> > I just picked up a Linksys Power2Go power inverter. All I really want> >>to do is recharge my digital camera battery using the AC adapter that> >>came with it (this is one of those Canon S400s). I may also want to> >>recharge my laptop (Thinkpad T42) but can probably live with recharging> >>it while off and won't need to use it while it's on the inverter.> >> The Linksys instructions say that the car must be running when the> >>inverter is on?> >> Can this be right?> >> I'm going to be at a campsite for a few days and won't be running the> >>car (it will just be parked). Do I really have to turn on the ignition> >>and let the car idle while I'm recharging things?> >> Thanks> > --> Return address is VALID but some sites block emails> with links. Delete this sig when replying.> .> Wanted, PCMCIA SCSI Card for HP m820 CDRW.> FS 500MHz Tek DSOscilloscope TDS540 Make Offer> Wanted, 12.1" LCD for Gateway Solo 5300. Samsung LT121SU-121> Wanted 12" LCD for Compaq Armada 7770MT.> Bunch of stuff For Sale and Wanted at the link below.> MAKE THE OBVIOUS CHANGES TO THE LINK> ht<removethis>tp://www.geocities.com/SiliconValley/Monitor/4710/
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Mike 26 April 2005 02:50:00 [ permanent link ]
	Mike Romain wrote:> mike wrote:> Mike Romain wrote:>> The inverter draws too much power to safely use without the alternator>>>unless you have a second battery or a boost source.>>> Why not just get the automotive adapter that works off 12 volts DC and>>>plug it in to the lighter socket? That still can get dangerous, but it>>>draws 'way' less power than an inverter.>> I'll challenge that statement. My inverter draws 60mA at 12V unloaded.>>Efficiency is over 80%. Yes there's loss, but very little practical>>difference in whether your car will start when you're done.> Ok, that is all fine and dandy but only means with no draw (just plugged> in) you are already killing the battery. I agree completely. If you're too stupid to turn off the inverter when it's not in use, you'll run your 60AH battery flat in only 1,000 hours. Sure wish I had that much time to spend camping. What you need to compare is> the AC adaptor draw on your inverter to the correct DC adapter drawing> on your battery. We've alredy done that, but I'll spell it out... Refer to the paragraph above. The drain is 60ma + (correct DC adapter drain)/0.8 That means you'll have to start the engine to recharge 25% more often. mike Mike> It's still a bad idea to run ANYTHING off your car battery when you're>>the only vehicle out in the boonies. I always take along a 12 pound>>gas generator.>>mike>> The inverter is going to 120>> AC, then back to 9 VDC or 6 VDC or what every you need, all those steps>>>eat power.>>> Mike>>>86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00>>>88 Cherokee 235 BFG AT's>>> News Reader wrote:>>> I just picked up a Linksys Power2Go power inverter. All I really want>>>>to do is recharge my digital camera battery using the AC adapter that>>>>came with it (this is one of those Canon S400s). I may also want to>>>>recharge my laptop (Thinkpad T42) but can probably live with recharging>>>>it while off and won't need to use it while it's on the inverter.>>>> The Linksys instructions say that the car must be running when the>>>>inverter is on?>>>> Can this be right?>>>> I'm going to be at a campsite for a few days and won't be running the>>>>car (it will just be parked). Do I really have to turn on the ignition>>>>and let the car idle while I'm recharging things?>>>> Thanks>>> -->>Return address is VALID but some sites block emails>>with links. Delete this sig when replying.>>.>>Wanted, PCMCIA SCSI Card for HP m820 CDRW.>>FS 500MHz Tek DSOscilloscope TDS540 Make Offer>>Wanted, 12.1" LCD for Gateway Solo 5300. Samsung LT121SU-121>>Wanted 12" LCD for Compaq Armada 7770MT.>>Bunch of stuff For Sale and Wanted at the link below.>>MAKE THE OBVIOUS CHANGES TO THE LINK>>ht<removethis>tp://www.geocities.com/SiliconValley/Monitor/4710/> -- Return address is VALID but some sites block emails with links. Delete this sig when replying. . Wanted, PCMCIA SCSI Card for HP m820 CDRW. FS 500MHz Tek DSOscilloscope TDS540 Make Offer Wanted, 12.1" LCD for Gateway Solo 5300. Samsung LT121SU-121 Wanted 12" LCD for Compaq Armada 7770MT. Bunch of stuff For Sale and Wanted at the link below. MAKE THE OBVIOUS CHANGES TO THE LINK ht<removethis>tp://www.geocities.com/SiliconValley/Monitor/4710/
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Mike Romain 26 April 2005 18:16:40 [ permanent link ]
	mike wrote:> Mike Romain wrote:> > mike wrote:> > Mike Romain wrote:> >> The inverter draws too much power to safely use without the alternator> >>>unless you have a second battery or a boost source.> >>> Why not just get the automotive adapter that works off 12 volts DC and> >>>plug it in to the lighter socket? That still can get dangerous, but it> >>>draws 'way' less power than an inverter.> >> I'll challenge that statement. My inverter draws 60mA at 12V unloaded.> >>Efficiency is over 80%. Yes there's loss, but very little practical> >>difference in whether your car will start when you're done.> > Ok, that is all fine and dandy but only means with no draw (just plugged> > in) you are already killing the battery.> I agree completely. If you're too stupid to turn off the inverter when> it's not in use, you'll run your 60AH battery flat in only 1,000 hours.> Sure wish I had that much time to spend camping.> What you need to compare is> > the AC adaptor draw on your inverter to the correct DC adapter drawing> > on your battery.> We've alredy done that, but I'll spell it out...> Refer to the paragraph above. The drain is> 60ma + (correct DC adapter drain)/0.8> That means you'll have to start the engine to recharge> 25% more often.> mike No no, you are missing the point totally. You need to compare a DC to DC voltage regulator's draw on the car battery to an AC adapter and inverter's draw on the car battery. The 'proper' DC to DC regulator used to charge up the digital camera batteries will/should use a whole pile less power than an AC adapter and inverter setup. Mike 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 88 Cherokee 235 BFG AT's It's still a bad idea to run ANYTHING off your car battery when you're> >>the only vehicle out in the boonies. I always take along a 12 pound> >>gas generator.> >>mike> >> The inverter is going to 120> >> AC, then back to 9 VDC or 6 VDC or what every you need, all those steps> >>>eat power.> >>> Mike> >>>86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00> >>>88 Cherokee 235 BFG AT's> >>> News Reader wrote:> >>> I just picked up a Linksys Power2Go power inverter. All I really want> >>>>to do is recharge my digital camera battery using the AC adapter that> >>>>came with it (this is one of those Canon S400s). I may also want to> >>>>recharge my laptop (Thinkpad T42) but can probably live with recharging> >>>>it while off and won't need to use it while it's on the inverter.> >>>> The Linksys instructions say that the car must be running when the> >>>>inverter is on?> >>>> Can this be right?> >>>> I'm going to be at a campsite for a few days and won't be running the> >>>>car (it will just be parked). Do I really have to turn on the ignition> >>>>and let the car idle while I'm recharging things?> >>>> Thanks> >>> --
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Re: power inverter to charge digital camera battery, maybe recharge laptop

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