Rechargable batteries don't work in some devices?

Homerboy

Lifer
Mar 1, 2000
30,488
4,518
126
My daughter has this Leapster Device and I wanted to use some rechargeable AA batteries in it. But they simply don't work (yes they are fully charged).

Do rechargeables not work in some devices? I don't get that. Isn't DC power DC power? How would the device know?
 

Anubis

No Lifer
Aug 31, 2001
78,716
414
126
sometimes rechargables run at a slightly lower voltage and some things dont like that
 

Homerboy

Lifer
Mar 1, 2000
30,488
4,518
126
Hmmm really? Well that blows. They pretty much force your hand to buy the $30+ recharge pack then. A-holes.
 

gsellis

Diamond Member
Dec 4, 2003
6,061
0
0
Originally posted by: Anubis
sometimes rechargables run at a slightly lower voltage and some things dont like that
Just confirming. An example is 9V batteries. The voltage of full charge is at the point where my Beachtek starts misbehaving. So I have never used them.
 

sdifox

No Lifer
Sep 30, 2005
89,965
12,024
126
err, the battery pack they sell you is also filled with the same rechargeable batteries :)
 

Homerboy

Lifer
Mar 1, 2000
30,488
4,518
126
Originally posted by: sdifox
err, the battery pack they sell you is also filled with the same rechargeable batteries :)
well see that's the other part I don't get. What's so MAGICAL about the batteries inside their kit then?
 

frostedflakes

Diamond Member
Mar 1, 2005
7,925
1
0
Probably different chemistry (Li-ion, for example). Typical non-rechargeable chemistries (there are quite a few, I don't know what's most common, alkaline maybe?) are about 1.5V per cell, whereas NiMH and NiCad are about 1.2V per cell.
 

sdifox

No Lifer
Sep 30, 2005
89,965
12,024
126
Originally posted by: Homerboy
Originally posted by: sdifox
err, the battery pack they sell you is also filled with the same rechargeable batteries :)
well see that's the other part I don't get. What's so MAGICAL about the batteries inside their kit then?
what kind of rechargeable did you use? the ac adaptor says 9v 16w, not sure NiCad would be up to the task.

Pure Energy makes a Rechargeable Alkaline that is 1.5V. I don't have any experience with them.
 

Aikouka

Lifer
Nov 27, 2001
30,372
896
126
Originally posted by: Anubis
sometimes rechargables run at a slightly lower voltage and some things dont like that
What he said.

Like my Logitech Cordless Elite keyboard refuses to use any rechargeable batteries but the mouse works fine with them.
 

LTC8K6

Lifer
Mar 10, 2004
28,520
1,574
126
The guide for that game says 9V 700ma adapter. There should be no reason that a set of good NiMH batteries wouldn't work.
 

ASK THE COMMUNITY