I notice most of the rechargable D-cell batteries on Ebay say they are 1.2V, but on the back of all my boomboxes it specifies 1.5V. What's the deal?

quote:

Originally posted by Reli:
I notice most of the rechargable D-cell batteries on Ebay say they are 1.2V, but on the back of all my boomboxes it specifies 1.5V. What's the deal?

It's no deal, just a simple fact that rechargeables are 1.2 volts as opposed to standard disposable cells which are 1.5 volts. For what it's worth, I find that although NiMH cells are lower voltage, they can pass higher current and provide a rock solid 1.2 volt virtually until they die whereas standard cells will gradually decline in voltage as they wear down. Some boomboxes want the full 1.5v but most will operate fine with 1.2v cells. This is one area where you'll just need to experiment and see how your boombox responds.

some of my 6-battery boxes do not work with 1,2 V rechargeables, butt all 8, or 10- battery boxes are working fine.

So it is technically not possible to make 1.5V rechareables?

never seen 1.5V "D". Same with "C", "AA" and "AAA"..

Alkalines are different chemicals than nimh. Although they say "1.5v", they really are only at 1.5 volts at the very beginning and quickly fall to 1.3ish to 1.1ish volts for their useful life. Nimh are a little over 1.2 volts from the beginning until they fall off (much flatter voltage curve). The newer nimh can have more energy in them than alkalines. Look for 2500+ mah cells.

quote:

Originally posted by steedums:
Look for 2500+ mah cells.

Is it worth it to step up to the 10,000 mh they sell on ebay?

quote:

Originally posted by Reli:
So it is technically not possible to make 1.5V rechareables?

Voltage is dependent on the chemistry
cannot be made to any voltage.

All the standard battery voltages are based
on using zinc-carbon type batteries.

quote:

Originally posted by Reli:

quote:

Originally posted by steedums:
Look for 2500+ mah cells.

Is it worth it to step up to the 10,000 mh they sell on ebay?

oh, yeah, 10,000 mah are solid D-cells. My mind was on AA's since all my rechargeables are AA's. Watch out for the low mah D-cells as they are just AA rechargeable in plastic bodies. The energizer D-cells are like this.

Good information, thanks. Guess I'll go ahead and buy some of those green 10,000 mah from China, although knowing Chinese products I'll need to wash my hands every time I touch them because of all the lead they use in their paint and decals. Wouldn't doubt they give off toxic vapors as well, lol.