Cordless Dremel info?

I just got a cordless dremel for my birthday. It's a 10.8v cordless and I was wondering if it holds it's charge well. I might want to take it back and get a corded one if it doesn't. I had a cordless drill and it lost it's charge all the time and wasn't that powerful, it stunk, that was a while ago though and the newer generation of cordless tools might be better. Any personal experience would be helpful.

Question by threadbare   |  last reply

Cordless Telephone Bridge

I'm trying to figure out how (or if) I can use an old cordless phone as a tranciever, wiring in an rj11 jack to the phone's reciever to essentially make a cordless phone "bridge" so that I can use my desk phone in an area without phone cabling by plugging it into the cordless phone's reciever. I've tried the phone over power adapters and haven't had great luck with 'em, so I'm trying to think outside the box. Anyone have a suggestion or two?

Topic by ptilton 

Jobmate cordless screwdriver

Hey guys!!! Long time no see, I have been busy doing other things in my life and coming to check on here completely slipped my mind, I feel so bad now after seeing how many comments I've missed out on replying on. Also, I noticed some people around here have a PRO beside their name, what is that about? Anyways I have a question I wanted to ask. I bought this handy little cordless screwdriver at a yard sale yesturday, and got it home, plugged it in to charge, and it seemed to be holding a good charge, I used it to change some tweeters in my tower speakers, it has good torque, and good speed. Overall, for $1 I was happy with my find while out on my little adventures. Well, I went to use it this afternoon, and it was dead :( Apparently the Ni-Cads are toast. The problem here is, theres only one screw in the side of the unit, and it only lets me pry half of it open, I can't get the top off of it, there seems to be two metal tubes holding the top on. Does anyone have any idea how I'd pop this thing open?? I want to see about replacing the two cells inside with some rechargeable energizer AA's I have, would I not be able to charge them with the built in charger?? They are NiMh however..

Topic by Punkguyta 



Question by tinkertoymania   |  last reply

Connect a cordless phone to a computer and use over Skype/Google, etc

Has anyone come across a way to connect a cordless phone to your computer and use to talk over Skype, Google Talk, or similar?

Topic by awascholl   |  last reply

Power a cordless tool with a wall socket?

I have been experimenting with multiple scrounged mostly computer transformers and wiring them into the battery packs. Most of them work for a while then they quit. They can add a quick charge to bad batteries and I can use the tool directly while plugged in but once the transformer goes the battery soon runs down. I am using 18 and 19.2 volt tools and am wondering what voltage and amperage transformer would work or is this just a fatally flawed set up? I have no electrical background and my main motivation for this project is to give new life and function to otherwise wasted equipment. I would also like to see these unused tools possibly made available to those in less fortunate areas who could use the tools either from an AC conversion or to run from a 12 volt car battery which is common world wide. Thanks for any input

Question by footzapper   |  last reply

Is it safe to power a 9v=150mA (cordless phone) with a 9v 300mA adapter? Answered

I have a Philips CD250DUO cordless phone that has no user's guide , and a GE Atlinks cordless phone that is powered by 9v i50mA i wonder if i could use my 9v 300mA adapter on the Philips brand and can anybody tell me if there is free download of user's guide for this device

Question by jovenhatsjr   |  last reply

Can I use Transceiver from an old cordless phone to control RC plane? Answered

Basically I am thinking of controlling my first RC Plane (yet to be build, currently I am in design phase)  using old cordless phone and its receiver base. I am wondering if someone has already done something like this or if someone can point me to some source. Any pointer are much appreciated... regards, RegMan

Question by regman1981   |  last reply

is an input 220-240V output 9VDC 300mA safe to use on an input 100-240V 0.3A output DC6V 0.21A device?

I n the manual the devise is 100-240 0.3A and my available adapter is 220-240V output 9VDC 300mA is it safe to use

Question by jovenhatsjr   |  last reply

24V Panasonic rotary hammer drill - battery and wires got hot (drill didn't) and drill stopped working. Answered

I have a 24V Panasonic rotary hammer drill, model EY6813. It came with two 3.0 amp-hr NiMh batteries, both of which had a problem with one of the contacts almost welding itself to the contact in the drill, and also in the charger. I stopped using those batteries. Now, using an external 7.0 amp-hr NiCd, it's worked fine until recently. The drill began to intermittently shut-off, then quit working altogether. I then noticed that the battery, the wire running to the drill, and the contacts in the drill were hot (battery was very warm, the wires & contacts were VERY hot). Any ideas about the problems with the NiMh or NiCd? Could it be the drill and not the batteries? The hot batteries/wires occurred after minimal runtime, so I don't think its a matter of overdrawing the battery, but I'm just not sure. The vent holes on the drill are not blocked.

Question by    |  last reply

craftsman cordless drill battery

I need to replace my 19.2 V cordless drill battery.  I can't find the battery. Can it fixed?

Question by tdcb46   |  last reply

Cordless electric drill motor.? Answered

I have been experimenting with an old motor from a cordless drill no markings on it - Any one have any power information for these motors - they seem to produce a LOT of torque for such a small motor.? I find I can lift 4 Kg fairly easily - I guess I could do it the old way and measure and calculate HP.

Question by rickharris   |  last reply

Power Tool Corded to Cordless

Hi 'nstructables I'm building a hovercraft (see several tutorials on Instructables - the one with a leaf blower) and my leaf blower is corded. I don't want to buy 25 miles of Black and Decker High Power Extension Cabling so I'm planning to convert to cordless. Here's my idea: (in visual) Is there anything I need to add? And if so, how do I make the "12VDC-240VAC" inverter described? My blower is 1600 watt. Thanks for any help! (Black and Decker)

Topic by nitrojon   |  last reply

Cordless drill power supply

I am using an EFUEL 30amp 18volt 540watt (model sk-200013)  power supply to power my Ridgid cordless tools. A dead battery was gutted and a power cord was soldered onto the circuit board inside the battery enclosure. My problem is that I encounter an OCP (overcurrent protection) error if I do not slowly power up my tools. I can live with this except for tools that are not variable speed (circular saw). If a Ridgid cordless tool demands full power at start up then the OCP error condition is triggered. My question is that I have heard that the installation of an external capacitor will eliminate the ripple effect and smooth out the power demand on the power supply so that any tool used at 100% demand at start up  will work without causing the OCP error condition. Is this correct? If so, can anyone tell me the type and value of the capacitor to use? Any help is appreciated. JEM213

Topic by JEM213   |  last reply

Reusing old laptop & cordless components

Hi, I have an old laptop which stopped working due to variety of reasons (I suspect it was mostly a SW issue). I have reason to believe that its screen and lots (or most) of other HW components still work fine. (I have done the easy part of removing its HDD and am using it like a portable disk). Can someone suggest or point me to instructables for to reuse components from this laptop? Same for my cordless phone which is a Panasonic KX-TC1486B . (I have taken the phone apart already and have labeled parts as originally found just for ref). Thanks, Sushrut.

Topic by sushrut.j.mair   |  last reply

convert 12v cordless battery to solar charge

My first post- great site! I'm a complete idiot when it comes to electrical; does anyone out there know of a way to charge a 12v cordless drill battery with a solar panel- the eventual end result being to power a bank of LED lights and can all LED lights be powered with DC, if so how many could I expect to run?

Topic by screefer   |  last reply

old cordless phone as a wifi signal repeater/booster . Is it possible ?

Well the question says it all. I am just wondering if its possible

Question by SamaritanWonders   |  last reply

Home made charger for a cordless. screwdriver.?How do i connect 2wire charger to 3 prongs on batt.

Blk & dec vpx 7 vdc cordless screwdriver.Missing charger,not available anymore.Batt. has 3 prongs for charger.

Question by    |  last reply


I have an old GE corded phone... Is there anyway I can turn this into a cordless phone?

Topic by popit   |  last reply

Need help with power supplies

I've been reading about electronics for a while and watching the Make podcast and I've finally started making my own projects. Anyway I have some cordless tools with 3 extra batteries but only one of them still takes a charge. So I thought it would be cool if I could put a power supply in one of my dead batteries so that I could plug it into the wall. I've been looking around my garage and thrift stores for a wall wart that would get the job done (the batteries are 19.2V Craftsman batteries I think they pull about 2000ma) but the closest I've been able to find is an old laptop power cord has a DC output of 19v and 3.9amps. So I'm not sure if that will work or if the extra amps will burn out my tools or something. Does anyone know if it would work? If not how can I dial down the amps?

Topic by cannedham160   |  last reply

temp controller

Hi dont know is anybody can help replacing the batteris in my drill pack and found that it has what looks like a thermistior??? to control chaging temp.  unfortunatly when dismantling I shorted it out to + and i believe blew it. i need to renew it as it lookslike it feeds relay in charger to switch  when fully charged (its a 1 hour fast charge)  how ever dont know what it is . it appear tobe connected in series with a resistor ???(again not sure can up load a photo if it helps) the thermistor is 2 wire and marked M20 tp118/c 02c if that helps, the resistor 05u-045G peter

Question by peter354   |  last reply

Possible way to charge a cordless drill?

So I was thinking, would it be possible to charge a cordless drill by turning the whole chuck-thingy (the part that the motor spins)? I thought that would make sense, since you are just doing what the drill does but in reverse, but I think there may be some voltage problems you'd run into... Any ideas?

Question by masterbuilder   |  last reply

Why the cordless drill motor not run?

Hi all, I have a problem with the motor of the cordless drill. I converted my cordless drill from Ni-Cd battery to Li-ion battery 12v6 using the protected PCB as this image: After connecting the 3 cells Li-ion battery to PCB, I measured the voltage at P+ and P- is 12v. So the connection between the battery and PCB is correct! Try to connect P+ and P- (from PCB) to the positive and negative terminals of the motor, then the PCB cut-off voltage at the output pin. The reason is the 2 terminals of the motor is connected (using the Digital Multimeter to check). How to resolve this problem with the motor working properly? Thanks. Sy Do

Question by sydo   |  last reply

DIY ±18VDC to power a dead cordless drill

Hi! My last battery died on my cordless drill and i'm trying to transform it to a corded drill. My plan was to use a microvawe transformer along with a bridge rectifier (KBPC5010  Bridge Rectifier Diode, KBPC Series, Single, 1 kV, 50 A, 1.2 V, Module, 4) to power the drill. 120VAC from the wall to, I wish, 12to18VDC. The problem with this is the voltage given by the output of the microwave transformer is of only ±3VAC. Any sugestion?

Topic by rudecam   |  last reply

How can I make a wireless speaker out of an old cordless phone?

I have a cordless phone. I would like to play music through it. How can I hook up a headphone cord to the base of the phone so that the signal goes from my audio source through the headphone cord, to the base then to the handset?

Question by sundet   |  last reply

Old RF (cordless) mouse/keyboard receiver device: some ideas to reuse it?

Cleaning my room, I've found an old (pc) iTek wireless mouse/keyboard set. So I think: "Damn, this is a radio input/output device... what can I do with it?". I'm not able to work with electronic (I've only a little soldier skill), but I don't want to throw away this object. Any idea to re-use it? Thanx.

Question by    |  last reply

off hook signal detector for land line phones.Does this exist?

 My grandfather leaves his cordless phone off the hook all the time. Since it is a multi phone cordless system it is frustrating to find it or go there and take care of it?  I would like to build a unit that will detect the sound/signal from the phone company to alert you that a phone is off the hook, and have it cycle the power on the base to reset the connection to the handsets.  Any ideas?

Question by justmefjs2   |  last reply

How can I convert a rechargeable beard trimmer to strictly a/c?

First of all, I love this trimmer. I've had it for probabaly 15 years. The settings are so precise and I'm so used to it that I would hate to replace it. It is a rechargeable model, which plugs into a cord, not a charging stand. The battery hasn't charged in probabaly 10 years. But since it stopped charging, I was able to keep using it by having it plugged in. I was able to do this for a long time until several days ago. When I'd turn it on while plugged into the outlet, the motor would barely even run. So I took it apart, looked around, and figured I would try to replace the rechargeable battery inside. I sourced a battery, installed it, and the trimmer worked again. I charged it overnight and went to use it the next morning. I got about halfway through when it just completely died on me. So I would turn it off for a few minutes, let it maybe charge a little and try to finish my trimming. At this point, I could maybe get 30 seconds of really weak performance before it would grind to a halt. I tried plugging it in and using it that way, as I had done so many times before, but that wouldn't work either. Can anyone advise me as to what's going on here? Why was I able to use it for so many years with the a/c/ cord and a dead battery, but now with a fresh battery, the a/c cord is useless for operation and obviously useless for charging as well? So I'm wondering if there might be a way to convert this trimmer to strictly a/c, remove the battery from the eqation, and operate it that way? I'm no electronics guru, by any means. But If instructed, I'm sure I could get this thing operational again. I don't care about it being battery powered anyway. I use it in the bathroom where there are a couple of very handy outlets. Thanks.

Question by chinaski   |  last reply

Does Replacement Batteries Harm Cordless Tools, Or Just Not Worth the Savings in the Long Run?

Should I stick to Makita HandBook for Cordless 18v LXT stating "Only use Makita Batteries and Charger", or go for the replacements? Same goes for  "StepDown Transformers [220v to 110v] can harm tools etc...etc..." I can dig the reason if it where for corded tools, but am I really jeopardizing my DC18RC 110v? Which Replacement Batteries Do You Recommend? Does it goes the same way for such rechargeable batteries (and chargers) that are made in China, that as the description specifies, made from China, so don't expect much?

Question by GiladM1   |  last reply

How can I connect two cordless handsets together using the 3/16 jacks?

I have a cit 310 yahoo phone and would like to connect the headset 3/16 jack to a 3/16 jack of a landline cordless phone so I can patch the yahoo call to a cordless landline.? This way someone can call me through yahoo, I can answer on the cit310 then call another friend on my home phone, patch the two together and have a 3 way conversation by using another extension in the house.

Question by    |  last reply

is it possible to run AC power Cordless phone by AA battery input power 6 volt 500 MAH?

I have purchase a cordless phone few days ago. its not work when the power down, so i want to run it by AA battery during AC power down. or is it possible to run automaticaly by battery when AC power down.

Question by atmhoque   |  last reply


I am dumb today, Im also busy. best power supply for converting a cordless drill to corded would be the battery charger? or not? 6.5 amp 14.4 volt porter cable drill - model 877 charger reads 12v/14.4v 1.8 amp charger My math and logic tells me I am going to need roughyl 3 times the amperage to power this focker to full go, and that I should locate another higher amperage dealy, like a car batter charger or something....

Topic by 666mph 

How to hack a dead battery of a cordless vacuum cleaner?

Hi Everybody, I've got an old cordless vacuum cleaner with an old short lasting battery, so I decided to hack it in order to use it on the plug directly ( I'll be using the output of  its charger). The cordless vacuum cleaner has a battery of 3.7 V and a 9V DC- 150mA as an output for its charger. Note: I was not able to see the motor characteristic because it's covered and it was difficult the remove it. So I disassembled everything and try to plug the output of the charger directly to the motor, the motor didn't work. I plug the motor directly to its battery = it works I plugged a 15V - 150mA (from an old printer transformer) => the motor it barely turns (about 1 rpm) I plugged a 32V - 150mA (from an old printer transformer) => the motor turns very slow but faster than the previous experiment (about 2 rpm) Can anyone explain what's going on. Why the motor cannot accept DC from chargers? Thanks in advance

Question by wdarwish   |  last reply

How to make a personal voice amplifier from a cordless phone or old cell phone

I know you all can help. Can someone figure out how to make a personal voice amplifier from a cordless phone or old cell phone? Thanks Pwfree

Topic by pwfree 

Convert 3rd party charger to charge cordless screwdriver battery

I would like to know if I can use this particular charger to charge my skil batteries. The problem I have with the manufacture’s charger is that there is no automatic shut off or protection from trying to charge a bad battery. When you charge the battery for to long or try and charge a bad battery the manufacture’s charger burns out the chargers transformer. My goal is to have a charger that I can just put the batteries in and forget about them until the next time I need them and then grab them out of the charger and have them ready to go. I can disassemble the manufacture’s charger for these batteries and easily remove all of the guts. Then could I just wire the ends of the Alpha charger to the ends of the manufacture’s charger? What do you think? Will this work? Thanks The battery is a skil 92940 Flexcharge battery 3.6-Volt 1.0-Amp Hour Nicad. The charger is an Alpha Power Battery Charger with the Specs: • 3 Easy Steps to Renewable Power 1. Insert battery (batteries) 2. Select Mode: Charge,Discharge/charge,Refresh/charge, Test/charge 3. Select Rate: 200mAh,500mAh, or 700mAh • Works with all NiCd & NiMH AA/AAA Rechargeable Batteries • Automatically switches to trickle charge when charging is complete to ensure maximum battery capacity • Automatically defaults to 200mA charge (the optimal setting for prolonging battery life) • Overheat detection to protect over-charging • Charges AA & AAA rechargeable batteries simultaneously • Will not charge defective batteries • Select different charging current for each channel • Charges Battery Types: AA/AAA NiCd and NiMH • Input Voltage for AC/DC Adapter: 100-240 VAC (works only with included AC/DC Adapter) • Charging Current Range: 200 mAh, 500mAh, or 700mAh • Max Charging Capacity: 3000 mAh • When charging is complete, LCD shows capacity in mAh for each battery

Topic by dp31959 

How can I convert 18v cordless drill battery to recharge laptop, compact camera charger?

I have 2 rechargeable 18v battery pack from cordless drill which I'm thinking of using as laptop charger and compact camera battery charger.  These packs comes with 220v adaptor.  Me and my 12yo son will be doing a week-long research for his school project (climate change) this Xmas break, backpacking in a remote island.  I was thinking of using this packs to recharge our gears and then send the depleted 18v battery for recharge, and so on.  Will this be possible?  Thanks everyone for the help.

Question by bongex 

How is an led in cordless power tools (drills, saws, etc.) timed to cut off in x amount of time?

I know a little about electronics (very little), and would like to learn more. I was wondering about what kind of circuit, or device is used to have the led turn off at a preset amount of time. My cordless drill has an led that turns on when I squeeze the trigger, and then doesn't go off for 20 seconds, every time. I would like to know so that I can learn how to design projects that might need to have something turn off at a preset time. Thanks to all!

Question by stevecinstrfme   |  last reply

fix my phone

Im trying to  put my cordless  phone battery back together the wires got yanked

Topic by dianereeves   |  last reply

how can i convert telephone into a bluetooth headset?

I like to convert by telephone into a  cordless phone or in  to a bluetooth headset......................can anyone help me pls

Question by nibytm   |  last reply

how can a phoneline have both ac & DC?

Our phone lines have static, a friend told me to check to voltage (for ac to see if the cordless phone was the iussue) I check and the line has 110AC and about 52 DC. I unplugged the cordless phone and still get the ac voltage. most of the phone jack boxes show the dual voltage, but I have found one that only shows the DC, and no AC what so ever. How is this possible?

Question by liggy   |  last reply

how can i attach an antenna (or a cable as antenna) to this cordless phone base?

Theres ANT1, ANT1_SHORT and ANT1_SGND. I thought maybe solder a cable into ANT1 only and it should work. I need to extend my phones range by a couple of meters (it says 50mts but it doesnt even gets to the 5 mts. probably due to the walls) thanks! i did find this schematics: in my search. Its the TG220 one. I probably would just solder and try it but i fear i might damage it as i got no replacements

Question by JohnnyG22   |  last reply

How do i change a 18v 1.5A DC cordless drill battery to AC? (in other words, how do i change dc to ac ?)

I need a high voltage power supply to power a tesla coil from a battery, and i need ac not dc, so if i can change my battery to ac then i can run it through transformers to get HV AC power to run my tesla coil.

Question by lightning r fun   |  last reply

is there a guide,list or photo pool of parts one could salvage out of stuff your throwing away or see in the trash?

For instance as much of a pack rack as i am, i am getting ready to toss a couple of older cordless phones, an infrared foot massager, tossed an old all in one printer a couple weeks back. if there are good, all purpose usable parts i would salvage  and save the parts.  the foot massager must have  a motor or vibrater.   The cordless phones i saved the 9vdc bricks, i use i lot of stuff that runs off 9vdc.

Question by escapefromyonkers   |  last reply

can i convert a corded drill into an AC generator?

Wondering if i can use the same steps as this to make an AC generator:

Topic by ngsean   |  last reply

is it possible to hook a dimmer switch to a cordless tool charger to make it universal for any voltage?

I dont know much about much but i have ideas sometimes lol the question pretty much sums it up useing a dimmer switch for a light in oes house to create a uiversal battery charger for power tools dewalt ryobi bosch etc thanks for ur time

Question by pytlakw   |  last reply