reparing battery pack

L

LSMFT

Guest
When I rebuild my drill battery pack with new C nicads do I have to stay
in the same mAh rating. The originals are 1300mAh, I can replace them
with 2300mAh cells with tabs. Or even 4000mAh ones. Will more mAh hurt
the drill?




--
LSMFT


Force shits upon the Back of Reason...
Ben Franklin-
 
Phil Allison wrote:
"LSMFT"
When I rebuild my drill battery pack with new C nicads do I have to stay
in the same mAh rating. The originals are 1300mAh, I can replace them with
2300mAh cells with tabs. Or even 4000mAh ones. Will more mAh hurt the
drill?

** Nope.

But it will take proportionally longer to charge as the mAh rating goes up.

BTW:

Who makes 4000mAh Ni-Cds in C size ??


.... Phil


Just because you don't know who makes them doesn't mean they don't exist.
Click to expand...

You can also say, "Nobody pounded their pud at the Post Office" but that
doesn't mean that Sitre Magana wasn't caught beating off at the Post Office.
 
"LSMFT"
When I rebuild my drill battery pack with new C nicads do I have to stay
in the same mAh rating. The originals are 1300mAh, I can replace them with
2300mAh cells with tabs. Or even 4000mAh ones. Will more mAh hurt the
drill?
Click to expand...
** Nope.

But it will take proportionally longer to charge as the mAh rating goes up.

BTW:

Who makes 4000mAh Ni-Cds in C size ??


..... Phil
 
"Stephany Alexander"
Phil Allison wrote:
"LSMFT"
When I rebuild my drill battery pack with new C nicads do I have to stay
in the same mAh rating. The originals are 1300mAh, I can replace them
with
2300mAh cells with tabs. Or even 4000mAh ones. Will more mAh hurt the
drill?

** Nope.

But it will take proportionally longer to charge as the mAh rating goes
up.

BTW:

Who makes 4000mAh Ni-Cds in C size ??


Just because you don't know who makes them doesn't mean they don't exist.
Click to expand...

** Giant HUH ????????

I already found that Sanyo make 3600mAh Ni-Cd cells in C size.

Fast charge types too - very cool cells.



...... Phil
 
When I rebuild my drill battery pack with new C nicads
do I have to stay in the same mAh rating. The originals
are 1300mAh, I can replace them with 2300mAh cells
with tabs. Or even 4000mAh ones. Will more mAh hurt
the drill?

Better question, will it charge with the stock charger?
Click to expand...
It should, unless the stock charger /required/ special cells for rapid
charge, or some other condition.

Using NiMH cells should eliminate any problem, as they (generally) tolerate
rapid charging. I used regular NiMH cells for a Polaroid #365 electronic
flash, and the #363 rapid charger handles them fine, even though it was
designed for rapid-charge nicads.
 
On Sat, 05 Mar 2011 22:05:21 -0500, LSMFT wrote:

When I rebuild my drill battery pack with new C nicads do I have to stay
in the same mAh rating. The originals are 1300mAh, I can replace them
with 2300mAh cells with tabs. Or even 4000mAh ones. Will more mAh hurt
the drill?
Click to expand...
Better question, will it charge with the stock charger.



--
Live Fast, Die Young and Leave a Pretty Corpse
 
LSMFT <LSMFT@teranews.com> wrote in
news:QRCcp.27351$Pg4.20520@newsfe22.iad:

When I rebuild my drill battery pack with new C nicads do I have to stay
in the same mAh rating. The originals are 1300mAh, I can replace them
with 2300mAh cells with tabs. Or even 4000mAh ones. Will more mAh hurt
the drill?
Click to expand...
No,they will not hurt your drill,as long as the pack voltage remains the
same. it will draw the current it needs,and no more.
Makita switched their packs from NiCd to NiMH for an increase in run
time,NiMH having more mAH,a higher energy density than NiCd.
the drills stayed the same,the charger is where the difference is,for the
different battery chemistry.
NiMH have to be charged differently than NiCds.

NiMH are better cells,IMO.
they keep a charge longer,besides their higher mAH.

I've never seen 4000mAH sub-C NiCd cells,who makes them?

--
Jim Yanik
jyanik
at
localnet
dot com
 
When I rebuild my drill battery pack with new C nicads do I have to stay
in the same mAh rating. The originals are 1300mAh, I can replace them
with 2300mAh cells with tabs. Or even 4000mAh ones. Will more mAh hurt
the drill?
Click to expand...
I'd read somewhere that as mA rating goes up for a given cell size the
insulators get thinner and the battery is more at risk from heat (during
charge and discharge) than lower mA cells.

Someone more knowledgeable re. battery chemistry can probably answer here or
at

sci.chem.electrochem.battery

Good luck.
 
On Sun, 06 Mar 2011 09:57:07 -0800, William Sommerwerck wrote:

When I rebuild my drill battery pack with new C nicads do I have to
stay in the same mAh rating. The originals are 1300mAh, I can replace
them with 2300mAh cells with tabs. Or even 4000mAh ones. Will more mAh
hurt the drill?

Better question, will it charge with the stock charger?

It should, unless the stock charger /required/ special cells for rapid
charge, or some other condition.

Using NiMH cells should eliminate any problem, as they (generally)
tolerate rapid charging. I used regular NiMH cells for a Polaroid #365
electronic flash, and the #363 rapid charger handles them fine, even
though it was designed for rapid-charge nicads.
Click to expand...
I'd be cautious of the charger meeting the requirements of 2300 mAh cells
without it struggling.

Been dealing with these issues for many years in battery packs for my
handy talkies. I have a spare 7.2v 1400 mAh pack for my Vertex FT-60.
It won't charge slow but drop it in the rapid charger and it charges just
fine. Doesn't make much sense. I own a Maha multi charger that uses a
temp probe placed on the cells to help decide the charge.

I switched to all NMiH AAA cells for our keyboards/mice hand held GPS
etc.. Two chargers ant 4 packs of 2300 mAh cells. Smartest thing I've
done in awhile.



--
Live Fast, Die Young and Leave a Pretty Corpse
 
Using NiMH cells should eliminate any problem, as they (generally)
tolerate rapid charging. I used regular NiMH cells for a Polaroid #365
electronic flash, and the #363 rapid charger handles them fine, even
though it was designed for rapid-charge nicads.

I'd be cautious of the charger meeting the requirements of 2300 mAh
cells without it struggling.
Click to expand...
The charger doesn't "know" the cell's capacity. It just pumps current into
it. The better class of chargers shuts off when a particular cell voltage
(and/or some other condition) has been reached.


Been dealing with these issues for many years in battery packs for my
handy talkies. I have a spare 7.2v 1400 mAh pack for my Vertex FT-60.
It won't charge slow but drop it in the rapid charger and it charges just
fine. Doesn't make much sense. I own a Maha multi charger that uses
a temp probe placed on the cells to help decide the charge.
Click to expand...
I have two MAHA C9000 chargers. I wish they'd been available 40 years ago.
 
On Mar 5, 9:05 pm, LSMFT <LS...@teranews.com> wrote:
When I rebuild my drill battery pack with new C nicads do I have to stay
in the same mAh rating. The originals are 1300mAh, I can replace them
with 2300mAh cells with tabs. Or even 4000mAh ones. Will more mAh hurt
the drill?

--
LSMFT

Force shits upon the Back of Reason...
Ben Franklin-
Click to expand...
No, the higher maH means the drill will run longer on a fully charged
battery. Keep an eye on the charger overheating the first few times
you use the new pack as it will draw a little more current from the
charger and will also have to charge longer to fully charge the higher
capacity batteries.
 
The charger doesn't "know" the cell's capacity. It just
pumps current into it. The better class of chargers shuts
off when a particular cell voltage (and/or some other
condition) has been reached.

If it's just a brainless charge, that's correct.
Click to expand...
I'm so accustomed to 0.1C charging that I rarely set the C9000 for greater
than 0.3C -- even though 0.5C charges are /recommened/ by MAHA for its own
cells. I'm afraid of overheating the cells.

The C9000 can do a lot of useful stuff -- break in new cells, rejuvenate old
cells (supposedly), and measure cell capacity. The latter is useful for
assembling packs with closely matched cells. You should also check capacity
when you buy cells, as they're sometimes out of spec. (MAHA says the
tolerance is +/- 10% of the rated value. MAHA will replace low-capacity
cells.)
 
On Sun, 06 Mar 2011 12:47:53 -0800, William Sommerwerck wrote:

Using NiMH cells should eliminate any problem, as they (generally)
tolerate rapid charging. I used regular NiMH cells for a Polaroid #365
electronic flash, and the #363 rapid charger handles them fine, even
though it was designed for rapid-charge nicads.

I'd be cautious of the charger meeting the requirements of 2300 mAh
cells without it struggling.

The charger doesn't "know" the cell's capacity. It just pumps current
into it. The better class of chargers shuts off when a particular cell
voltage (and/or some other condition) has been reached.
Click to expand...
If it's just a brainless charge that's correct.

Been dealing with these issues for many years in battery packs for my
handy talkies. I have a spare 7.2v 1400 mAh pack for my Vertex FT-60.
It won't charge slow but drop it in the rapid charger and it charges
just fine. Doesn't make much sense. I own a Maha multi charger that
uses a temp probe placed on the cells to help decide the charge.

I have two MAHA C9000 chargers. I wish they'd been available 40 years
ago.
Click to expand...
Forget the model of mine. It was a model probably circa 1996 because AES
had just started to advertise their products. It wasn't something to just
pop 4 AAA cells into. It could charge several different styles. I don't
use it these days since I've bought drop in rapid chargers. It's at my
office in the basement with the rest of my junk or I'd give the model.




--
Live Fast, Die Young and Leave a Pretty Corpse
 
LSMFT wrote:
When I rebuild my drill battery pack with new C nicads do I have to stay
in the same mAh rating. The originals are 1300mAh, I can replace them
with 2300mAh cells with tabs. Or even 4000mAh ones. Will more mAh hurt
the drill?




Nope. My friend Ryan Morris tells me that if you replace it with 4000mAh
Click to expand...
cells, you will giving it 4000mA when it was only designed to take 1300mA.
 
"Sitre Josephenne Magana" wrote in message
news:il64k8$5cd$1@speranza.aioe.org...

LSMFT wrote:
When I rebuild my drill battery pack with new C nicads do I
have to stay
in the same mAh rating. The originals are 1300mAh, I can
replace them
with 2300mAh cells with tabs. Or even 4000mAh ones. Will more
mAh hurt
the drill?




Nope. My friend Ryan Morris tells me that if you replace it with
4000mAh
cells, you will giving it 4000mA when it was only designed to
take 1300mA.
Click to expand...
I would not seek electrical advise from that friend in the
future.

David
 
On Tue, 08 Mar 2011 12:47:08 +0000, Sitre Josephenne Magana wrote:
LSMFT wrote:
When I rebuild my drill battery pack with new C nicads do I have to stay
in the same mAh rating. The originals are 1300mAh, I can replace them
with 2300mAh cells with tabs. Or even 4000mAh ones. Will more mAh hurt
the drill?

Nope. My friend Ryan Morris tells me that if you replace it with 4000mAh
cells, you will giving it 4000mA when it was only designed to take 1300mA.
Click to expand...
You need to get a new friend....
 
Spamm Trappe Inscribed thus:

On Tue, 08 Mar 2011 12:47:08 +0000, Sitre Josephenne Magana wrote:
LSMFT wrote:
When I rebuild my drill battery pack with new C nicads do I have to
stay in the same mAh rating. The originals are 1300mAh, I can
replace them with 2300mAh cells with tabs. Or even 4000mAh ones.
Will more mAh hurt the drill?

Nope. My friend Ryan Morris tells me that if you replace it with
4000mAh cells, you will giving it 4000mA when it was only designed to
take 1300mA.

You need to get a new friend....
Click to expand...
I agree !

--
Best Regards:
Baron.
 
Phil Allison wrote:
"Stephany Alexander"
Phil Allison wrote:
"LSMFT"
When I rebuild my drill battery pack with new C nicads do I have to stay
in the same mAh rating. The originals are 1300mAh, I can replace them
with
2300mAh cells with tabs. Or even 4000mAh ones. Will more mAh hurt the
drill?

** Nope.

But it will take proportionally longer to charge as the mAh rating goes
up.

BTW:

Who makes 4000mAh Ni-Cds in C size ??


Just because you don't know who makes them doesn't mean they don't exist.


** Giant HUH ????????

I already found that Sanyo make 3600mAh Ni-Cd cells in C size.

Fast charge types too - very cool cells.



..... Phil


NIMH RECHARGEABLE C-CELL -- 5000 MAH
Click to expand...
High-capacity 5000 mAh rechargeable nickel-metal hydride C-cell. 1.2V.
26mm diameter x 50mm long. Standard charge, 16 Hours @ 300mA. Rapid
charge, 2 Hours @ 3000 mA.
Read more
CAT# NMH-C
$5.65 each

This is at All Electronics online catalog.

--
LSMFT


Force shits upon the Back of Reason...
Ben Franklin-
 
"LSMFT"
Phil Allison wrote:
BTW:

Who makes 4000mAh Ni-Cds in C size ??


Just because you don't know who makes them doesn't mean they don't
exist.


** Giant HUH ????????

I already found that Sanyo make 3600mAh Ni-Cd cells in C size.

Fast charge types too - very cool cells.



NIMH RECHARGEABLE C-CELL -- 5000 MAH
High-capacity 5000 mAh rechargeable nickel-metal hydride C-cell.
Click to expand...

** Shame that ain't a Ni-Cd cell.......

NiMH cells have up to 4 times the capacity of Ni-Cds, at least in AA size.


...... Phil
 
On 03/08/2011 12:47 PM, Sitre Josephenne Magana wrote:
LSMFT wrote:
When I rebuild my drill battery pack with new C nicads do I have to stay
in the same mAh rating. The originals are 1300mAh, I can replace them
with 2300mAh cells with tabs. Or even 4000mAh ones. Will more mAh hurt
the drill?




Nope. My friend Ryan Morris tells me that if you replace it with 4000mAh
cells, you will giving it 4000mA when it was only designed to take 1300mA.
Click to expand...

Ryan Morris ain't your friend. As a matter of fact, he banned you from
his website for posting stupid gas ass shit on his forums.

What's Next, You're going to claim that Dennis the weight trainer is
your best friend even though you kicked his knee and he punched your fat
face like 4 times and knocked you out?
 
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