Charging at different Voltage

[chrisdaemz]

I'v got an external battery pack to charge my RD2780 (audio/video player) when on the road. Well it normally charges at 5V so putting in four NIMH batteries (run at 1,25V so five make 5V) should not dammage it. But if I were to put in four normal alkanline batteries (run at 1,5V so make 6V) would this damage my player?
I don't know much about this but if I use the alkaline batteries will my player last longer as the voltage is higher and would this dammage my player?

Grtz

 

[JohnCU]

Higher voltage = higher current, which could damage some components but I don't think 1 volt would hurt it, but that's just a guess. You will only get 6 volts if you put the batteries in series. If they are all in parallel, it's still 1.5 volts.

 

[AlienCraft]

This "external battery pack for charging". Is it an RCA device for the RD2780?
I can't find any information about it anywhere on RCA's site and there's no mention of it in any review.
All the reviews I looked at comment on the battery life of the INTERNAL Lithium battery and speak of the AC/DC adaptor.
If you have something aftermarket it may void your warranty to use it.
That being said, I'll bet if you measure the output of the AC/DC device, you'll find it runs a bit higher than that of the battery's RATED output voltage. This is part of the charging phoenemena (sic).
FURTHERmore,the device will have an internal voltage regulator to keep the operation of the device constant even as battery voltage begins to drop.
I wouldn't worry about 1 volt on the front if you're looking for an auxilary way of powering up the device.
AS FOR this.....

as originally posted byJohnCU...:Higher voltage = higher current, which could damage some components but I don't think 1 volt would hurt it, but that's just a guess. You will only get 6 volts if you put the batteries in series. If they are all in parallel, it's still 1.5 volts.

NOT always and not necessarily. ESPECIALLY when it comes to batteries.

 

[JohnCU]

I = V/R, and assuming the resistance stays the same, a higher voltage = a higher current.

 

[chrisdaemz]

http://home.insight.rr.com/cha...15/images/Dsc00047.jpg

It's an external battery pack like this one and I assume the batteries are in series.

grtz

 

[Colt45]

Originally posted by: JohnCU
I = V/R, and assuming the resistance stays the same, a higher voltage = a higher current.

= higher power = more heat = probability of smoke becomes closer to 1.

 

[chrisdaemz]

What's the largest capacity of NIMH batteries? I've seen 2300 mAh (here in Europe) but that's about the highest I think. I would like to get the ones with most capacity but they have to stay affordable