On 2006-10-14 13:54:50 -0400, "John Plimmer" said:

I recently got a Redsun RP2100, the users view of which I previously
posted on this group.
It has the facility to use rechargeable batteries, something of which I
know nothing about.
It will charge these batteries for twelve hours.
I want to use "D" cells but don't know which rechargeables to buy.
My local store can order me NiCad's or NiMH - I don't know anything about that.
What's the difference?


Get NiMhs and a good charger. See http://www.thomasdistributing.com/
for both, excellent fast shipping.

The higher the Mah number the long they will last. Higher is better.
NiMhs can be recharged HUNDREDS of times, I've been using them ffor
years, I use them in everything except smoke/C02 alarms and clocks. I
use them in my Panasonic RF-B65 SW receiver.

Johnny Borborigmi wrote:

I use them in everything except smoke/C02 alarms and clocks.


Smart move, especially in the smoke and CO alarms. A regular battery has
a different discharge curve and will give you lots of warning before
it's inoperative.

A rechargeable nicad or NiMh may go dead while you are out of the house
and don't the hear the few warning beeps.



mike

m II wrote:
Johnny Borborigmi wrote:

I use them in everything except smoke/C02 alarms and clocks.



Smart move, especially in the smoke and CO alarms. A regular battery has
a different discharge curve and will give you lots of warning before
it's inoperative.

A rechargeable nicad or NiMh may go dead while you are out of the house
and don't the hear the few warning beeps.

I noticed a similar problem when I use NiMHs in a portable scanner. The
battery voltage drops so fast at the end of their discharge cycle, the
scanner's low battery alarm only beeps once. It's easy to miss it if
you're not paying attention.

HFguy wrote:
m II wrote:
Johnny Borborigmi wrote:

I use them in everything except smoke/C02 alarms and clocks.



Smart move, especially in the smoke and CO alarms. A regular battery
has a different discharge curve and will give you lots of warning
before it's inoperative.

A rechargeable nicad or NiMh may go dead while you are out of the
house and don't the hear the few warning beeps.

I noticed a similar problem when I use NiMHs in a portable scanner. The
battery voltage drops so fast at the end of their discharge cycle, the
scanner's low battery alarm only beeps once. It's easy to miss it if
you're not paying attention.


I first noticed it in a digital camera. I learned that when the warning
light comes on, it really means it. Now!




mike

I have a Radio Shack Pro-91 Scanner.(I am listening to it right now,the
cops are on the trail of somebody,name of Latoya) It beeps for a long
time when the Ray O Vac Alkaline batteries get low. www.rigpix.com
cuhulin