Source for Ni-MH batteries

Try the electronic parts supplier called Digi-key (www.digi-key.com). In their catalog they show a
bunch of different configurations they will make up using NiNH, NiCad or Lithium.

"Raymo853" <[email hidden]> wrote in message "]news:[email hidden]...

Quoted message said:

The battery on my Marwi/Performance light is dead. I am looking to buy

the

Quoted message said:

batteries myself instead of paying the $105 for a new battery.
sheldonbrown.comlights.htmlOpen ↗

Does anyone know a good source for such batteries? My old batter used 10 batteries wired together,
only mark is #0202, and I think was rated at 6 amp/hours.

A computer friend of mine gets his at ham fests and similar swap and sell gatherings for
peanuts. Tom

--
Bruni Bicycles "Where art meets science" brunibicycles.com
410.426.3420 Raymo853 <[email hidden]> wrote in message "]news:[email hidden]...

Quoted message said:

The battery on my Marwi/Performance light is dead. I am looking to buy

the

Quoted message said:

batteries myself instead of paying the $105 for a new battery.
sheldonbrown.comlights.htmlOpen ↗

Does anyone know a good source for such batteries? My old batter used 10 batteries wired together,
only mark is #0202, and I think was rated at 6 amp/hours.

Raymo853 said:

The battery on my Marwi/Performance light is dead. I am looking to buy the batteries myself
instead of paying the $105 for a new battery. sheldonbrown.comlights.htmlOpen ↗

Solder-tag AA cells are cheap and common, and around 1.8 AHr these days. You can wire them in
parallel for greater capacity.

Quoted message said:

Does anyone know a good source for such batteries? My old batter used 10

www.jaycar.com.au

here you go batteryspace.combatteryspace.comOpen ↗

--
Knight-Toolworks & Custom Planes Custom made wooden planes at reasonable prices See
knight-toolworks.comknight-toolworks.comOpen ↗ For prices and ordering instructions.

Mike said:

Solder-tag AA cells are cheap and common, and around 1.8 AHr these days. You can wire them in
parallel for greater capacity.

NiMH cells shouldn't be wired in parallel, at least not for charging.

This is because the voltage rises with increasing charge until the fully-charged state, and then
DROPS. This means that the first cell charged will bleed charge away from its companion. And this
will depress the charge on the companion even further.

John

"John Henderson" <[email hidden]> wrote in message
news:<[email hidden]>...

Quoted message said:

Mike said:

Solder-tag AA cells are cheap and common, and around 1.8 AHr these days. You can wire them in
parallel for greater capacity.

NiMH cells shouldn't be wired in parallel, at least not for charging.

This is because the voltage rises with increasing charge until the fully-charged state, and then
DROPS. This means that the first cell charged will bleed charge away from its companion. And this
will depress the charge on the companion even further.

John

Realgoods.com has NiMH D sized batteries as well as chargers. If you want to do it yourself you can
try putting the batteries in a pvc pipe with adapters that take a screw on end. Drill a hole in the
ends for the wires and use two springs out of an old flashlight.

Quoted post said:

Originally posted by Charles Ramsey
"John Henderson" <[email hidden]> wrote in message
news:<[email hidden]>...

Quoted message said:

Mike said:

Solder-tag AA cells are cheap and common, and around 1.8 AHr these days. You can wire them in
parallel for greater capacity.

NiMH cells shouldn't be wired in parallel, at least not for charging.

This is because the voltage rises with increasing charge until the fully-charged state, and then
DROPS. This means that the first cell charged will bleed charge away from its companion. And this
will depress the charge on the companion even further.

John

Realgoods.com has NiMH D sized batteries as well as chargers. If you want to do it yourself you can
try putting the batteries in a pvc pipe with adapters that take a screw on end. Drill a hole in the
ends for the wires and use two springs out of an old flashlight.

Do you know off hand what size pvc matches D cells? or C cells?

meb <[email hidden]> wrote in message news:<[email hidden]>...

Quoted message said:

Charles Ramsey said:

"John Henderson" <[email hidden]> wrote in message
news:<[email hidden]>...

Quoted message said:

"Mike" wrote:

> Solder-tag AA cells are cheap and common, and around 1.8 AHr these days. You can wire them
> in parallel for greater capacity.

NiMH cells shouldn't be wired in parallel, at least not for charging.

This is because the voltage rises with increasing charge until the fully-charged state, and
then DROPS. This means that the first cell charged will bleed charge away from its
companion. And this will depress the charge on the companion even further.

John

Realgoods.com has NiMH D sized batteries as well as chargers. If you want to do it yourself
you can try putting the batteries in a pvc pipe with adapters that take a screw on end. Drill
a hole in the ends for the wires and use two springs out of an old flashlight.

Do you know off hand what size pvc matches D cells? or C cells?

I am in the process of making batteries holders from PVC pipe and commercial battery holders
billcotton.combicycle electric.htmOpen ↗ There are different wall thickness for various out
side diameters pcv pipes. 1/2 schedule 40, I use for AA cells, 1 inch schedule 40 for C cells.
1-1/4 schedule 40 for D cells. I have made a pack of three single AA batteries holders glued and
wired in series together and they fit into a 1-1/4 diameter thin wall pvc pipe. That pipe is
pictured with a converted 15 LED Mag type flashlight. Another picture is of another Converted LED
flashlight using ½ pvc and an elbow, the two light form twin LED light. I have made 12 volts
batteries packs from an 8 cell and a 2 cells holders for AA NiMH cells. 2000 are available for a
dollar each. I charge the cells separately in a computer control for each cell charger. Two packs
give me 4 amp hours and weighs 1 pound 7 ounces, a 4 amp hour gel cell that is used for my 10 and
20 watts halogen weighs 4 pounds.