Author: John DoeDate: 13:20 10-07-07
|
|
(crossposted)
Just bought a 36 V cordless drill, uses lithium ion batteries. Opened
it up and discovered there are at least six wires coming from the
battery pack to the motor speed controller.
Does that mean the speed controller is not going to work if I just
connect 36V DC to the plus and minus terminals of the speed
controller?
I suspect at least one of the terminals coming from the battery pack
is to monitor the lithium-ion battery temperature (probably help keep
it from exploding). I don't know what the others are for.
Maybe I'll have to buy a matching battery pack instead of using my own
(36V, 3.5AH), or maybe I'll bypass the speed controller and go
directly to the motor. But I'd rather use their speed controller even
with its tiny heat sink.
Can't find DeWalt's amp hour rating for their 36V lithium-ion battery
packs, lots of hype about the technology though.
Thank you.
|
|
|
|
Author: John DoeDate: 19:42 10-07-07
|
|
2716.5101
36VDC/20A
629321-00
r205
|
|
|
|
|
|
On Jul 10, 12:20 pm, John Doe <j...@usenetlove.invalid> wrote:
> (crossposted)
>
> Just bought a 36 V cordless drill, uses lithium ion batteries. Opened
> it up and discovered there are at least six wires coming from the
> battery pack to the motor speed controller.
>
> Does that mean the speed controller is not going to work if I just
> connect 36V DC to the plus and minus terminals of the speed
> controller?
>
> I suspect at least one of the terminals coming from the battery pack
> is to monitor the lithium-ion battery temperature (probably help keep
> it from exploding). I don't know what the others are for.
>
> Maybe I'll have to buy a matching battery pack instead of using my own
> (36V, 3.5AH), or maybe I'll bypass the speed controller and go
> directly to the motor. But I'd rather use their speed controller even
> with its tiny heat sink.
>
> Can't find DeWalt's amp hour rating for their 36V lithium-ion battery
> packs, lots of hype about the technology though.
>
> Thank you.
I loved your TV series, perhaps a movie is in the works?
[8~{} Uncle Monster
|
|
|
|
Author: John DoeDate: 23:14 10-07-07
|
|
unclemon gmail.com wrote:
> On Jul 10, 12:20 pm, John Doe <j... usenetlove.invalid> wrote:
>> Thank you.
>
> I loved your TV series, perhaps a movie is in the works?
Is that one of your more useful replies?
>
> [8~{} Uncle Monster
>
>
>
> Path:
newsdbm02.news.prodigy.net!newsdst02.news.prodigy.net!prodigy.com!newscon02.news.prodigy.n
et!prodigy.net!news.glorb.com!postnews.google.com!k79g2000hse.googlegroups.com!not-for-mai
l
> From: unclemon gmail.com
> Newsgroups: sci.electronics.design,sci.electronics.basics
> Subject: Re: DC motor speed controller, too many inputs!
> Date: Wed, 11 Jul 2007 02:55:32 -0000
> Organization: http://groups.google.com
> Lines: 29
> Message-ID: <1184122532.540575.313870 k79g2000hse.googlegroups.com>
> References: <PdPki.26190$C96.3075 newssvr23.news.prodigy.net>
> NNTP-Posting-Host: 67.78.232.187
> Mime-Version: 1.0
> Content-Type: text/plain; charset="us-ascii"
> X-Trace: posting.google.com 1184122532 20487 127.0.0.1 (11 Jul 2007 02:55:32 GMT)
> X-Complaints-To: groups-abuse google.com
> NNTP-Posting-Date: Wed, 11 Jul 2007 02:55:32 +0000 (UTC)
> In-Reply-To: <PdPki.26190$C96.3075 newssvr23.news.prodigy.net>
> User-Agent: G2/1.0
> X-HTTP-UserAgent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.8.1.4)
Gecko/20070515 Firefox/2.0.0.4,gzip(gfe),gzip(gfe)
> Complaints-To: groups-abuse google.com
> Injection-Info: k79g2000hse.googlegroups.com; posting-host=67.78.232.187;
posting-account=1-IAYQ0AAADTouXLCwzYFCap5T9DGptv
> Xref: prodigy.net sci.electronics.design:822861 sci.electronics.basics:275398
> X-Received-Date: Tue, 10 Jul 2007 22:55:32 EDT (newsdbm02.news.prodigy.net)
>
|
|
|
|
|
|
On Jul 10, 10:14 pm, John Doe <j...@usenetlove.invalid> wrote:
> unclemon gmail.com wrote:
> > On Jul 10, 12:20 pm, John Doe <j... usenetlove.invalid> wrote:
> >> Thank you.
>
> > I loved your TV series, perhaps a movie is in the works?
>
> Is that one of your more useful replies?
>
I was really upset when "John Doe" was canceled. It
was one of the better shows on TV.
[8~{} Uncle Monster
|
|
|
|
Author: redbellyDate: 07:10 12-07-07
|
|
On Jul 10, 1:20 pm, John Doe <j...@usenetlove.invalid> wrote:
> (crossposted)
>
> Just bought a 36 V cordless drill, uses lithium ion batteries. Opened
> it up and discovered there are at least six wires coming from the
> battery pack to the motor speed controller.
>
> Does that mean the speed controller is not going to work if I just
> connect 36V DC to the plus and minus terminals of the speed
> controller?
>
> I suspect at least one of the terminals coming from the battery pack
> is to monitor the lithium-ion battery temperature (probably help keep
> it from exploding). I don't know what the others are for.
>
> Maybe I'll have to buy a matching battery pack instead of using my own
> (36V, 3.5AH), or maybe I'll bypass the speed controller and go
> directly to the motor. But I'd rather use their speed controller even
> with its tiny heat sink.
>
> Can't find DeWalt's amp hour rating for their 36V lithium-ion battery
> packs, lots of hype about the technology though.
>
> Thank you.
It's not clear what (or why) you want to do. Why don't you want to
use the battery pack that came with the drill? If you're looking for
a backup battery, just get one like the one that came with the drill.
Mark
|
|
|
|
Author: John DoeDate: 14:38 12-07-07
|
|
redbelly <redbelly98@yahoo.com> wrote:
> On Jul 10, 1:20 pm, John Doe <j...@usenetlove.invalid> wrote:
>> Just bought a 36 V cordless drill, uses lithium ion batteries.
>> Opened it up and discovered there are at least six wires coming
>> from the battery pack to the motor speed controller.
>>
>> Does that mean the speed controller is not going to work if I just
>> connect 36V DC to the plus and minus terminals of the speed
>> controller?
> It's not clear what (or why) you want to do.
I could have been clearer about not having a battery pack for the
DeWalt DC900 cordless drill. I bought the bare tool from eBay without
a battery pack or charger.
> Why don't you want to use the battery pack that came with the drill?
> If you're looking for a backup battery, just get one like the one
> that came with the drill.
I bought two different Panasonic drills so I could use some of their
juicy 3.5 amp hour 12V batteries (4 total) for my project (with
whatever cordless drill motor). Then I saw the 36V DeWalt (tool only)
and thought that's perfect. Unfortunately it has a PWM with about
eight inputs that probably must be satisfied somehow. So if I can't
find the data for that PWM motor speed controller, looks like I will
be selling one of the Panasonic drills and buying a battery/charger
for the DeWalt motor. Or maybe I can find a suitable replacement PWM.
Yes, using a matching DeWalt battery (light but volatile lithium-ion)
might be the way to go. Would be nice if DeWalt provided amp hour
ratings for their batteries, but maybe their users aren't considered
technically inclined enough to understand that.
Thanks.
>
> Mark
>
>
|
|
|
|
Author: redbellyDate: 16:23 12-07-07
|
|
On Jul 12, 2:38 pm, John Doe <j...@usenetlove.invalid> wrote:
> Would be nice if DeWalt provided amp hour
> ratings for their batteries, but maybe their users aren't considered
> technically inclined enough to understand that.
>
> Thanks.
>
I did some browsing around. Amazon.com lists a 2.4 A-hr spec on the
Dewalt 36V battery:
http://www.amazon.com/s/ref=nb_ss_gw/103-5784000-8202246?initialSearch=1&url=search-
alias%3Daps&field-keywords=dc9360&Go.x=10&Go.y=8&Go=Go
Pretty expensive suckers ($170 at amazon, and $100 for a charger),
especially if you wanted to get a 2nd battery. Looks like this tool
is meant for professional contractors.
Good luck,
Mark
|
|
|
|
Author: John DoeDate: 19:32 12-07-07
|
|
redbelly <redbelly98@yahoo.com> wrote:
...
> I did some browsing around. Amazon.com lists a 2.4 A-hr spec on the
> Dewalt 36V battery:
http://www.amazon.com/s/ref=nb_ss_gw/103-5784000-8202246?initialSearch=1&url=search-
alias%3Daps&field-keywords=dc9360&Go.x=10&Go.y=8&Go=Go
Great, I missed that, thanks.
> Pretty expensive suckers ($170 at amazon, and $100 for a charger),
There aren't any other standard use cordless drills at 36V either. I
think the next biggest is a Milwaukee 28V right angle drill.
The DeWalt lithium-ion batteries and charger are not nearly that
expensive on eBay. The way I see it, people buy the kits on sale
wherever they can get them and then break up the kits. Apparently you
can get stuff like batteries and chargers much cheaper (at certain
times) than you would pay for the replacement charger or battery
normally sold separately.
> especially if you wanted to get a 2nd battery. Looks like this tool
> is meant for professional contractors.
>
> Good luck,
>
> Mark
>
>
>
|
|
|
|
Author: John BDate: 16:55 14-07-07
|
|
On 13/07/2007 John Doe wrote:
.
.
.
> There aren't any other standard use cordless drills at 36V either. I
> think the next biggest is a Milwaukee 28V right angle drill.
>
Yes there are, at least on this side of the pond:
http://www.screwfix.com/app/sfd/cat/pro.jsp;jsessionid=TM5INF2NTKTGOCSTH
ZPCFFA?cId=100372&ts=26691&id=24048
Don't know it it's avaialable in the US though.
--
John B
|
|
|
|
Author: Eric R SnowDate: 20:29 22-10-07
|
|
<SNIP>.
>
>Yes, using a matching DeWalt battery (light but volatile lithium-ion)
>might be the way to go. Would be nice if DeWalt provided amp hour
>ratings for their batteries, but maybe their users aren't considered
>technically inclined enough to understand that.
>
>Thanks.
>
>
>
>
>>
>> Mark
>>
>>
I don't understand why you would state that the lithium batteries are
volatile unless you are thinking that they may harm you. Lithium
batteries do need to be treated differently that other batteries but I
haven't heard of any DeWalt batteries having problems. Lately it seems
that the batteries causing problems are counterfeit. The technology
and the built in safety devices have really improved in the last few
years. There are chips available for OEMs to put into their batteries
that the device using them checks for. This way only approved
batteries will work in the device. Other chips are made that prevent
over charge and discharge.
ERS
|
|
|
|
Author: John FieldsDate: 20:34 12-08-08
|
|
On Fri, 13 Jul 2012 14:15:45 -0700, Eric R Snow <etpm@whidbey.com>
wrote:
>I don't understand why you would state that the lithium batteries are
>volatile unless you are thinking that they may harm you. Lithium
>batteries do need to be treated differently that other batteries but I
>haven't heard of any DeWalt batteries having problems. Lately it seems
>that the batteries causing problems are counterfeit. The technology
>and the built in safety devices have really improved in the last few
>years. There are chips available for OEMs to put into their batteries
>that the device using them checks for. This way only approved
>batteries will work in the device. Other chips are made that prevent
>over charge and discharge.
---
13 July 2012?
JF
|
|
|
|
Author: Don BoweyDate: 21:40 12-08-08
|
|
On 8/12/08 5:34 PM, in article eta4a4hgcvh4c6jao4vi3eo490jcpupp83@4ax.com,
"John Fields" <jfields@austininstruments.com> wrote:
> On Fri, 13 Jul 2012 14:15:45 -0700, Eric R Snow <etpm@whidbey.com>
> wrote:
>
>> I don't understand why you would state that the lithium batteries are
>> volatile unless you are thinking that they may harm you. Lithium
>> batteries do need to be treated differently that other batteries but I
>> haven't heard of any DeWalt batteries having problems. Lately it seems
>> that the batteries causing problems are counterfeit. The technology
>> and the built in safety devices have really improved in the last few
>> years. There are chips available for OEMs to put into their batteries
>> that the device using them checks for. This way only approved
>> batteries will work in the device. Other chips are made that prevent
>> over charge and discharge.
>
> ---
> 13 July 2012?
>
> JF
The Timelords were laughing so hard (LOL even) about the nonsense going on
in the Basics Newsgroup, they momentarily mucked up the timeline.
|
|
|
|
1 |
