|11-12-2014 06:24 AM|
I have read that you can zap batteries with a mig welder. years ago I was using makita 12 v batteries on a 9 v tool, it didn't las very long.
I haven't tried this.
just before last christmas Lowes had a 18 v drill, charger , 2 batteries and fabric cary bag for $ 88 so I bought 2 kits. cheaper than 1 new battery.
|11-11-2014 10:24 PM|
|bentley81||Ill tell you what i've done is made a box like say 2 mopad batterys that i carried around with handle,24volts though on 18v,i think anything will work as long as you can get the positive,and negetive to hook to it.24v will burn 12v up though in little time.brushed just melt.I never thought about using on impact.them 14.4 volt ones that went bad,i've brought them back to live before,with more amps,around 15volts from car charger to get them warm,and theylll start back charging again,no joke.because a battery wont charge if charger dont notice it,may have to charge backwards for 3-5 seconds first.Them drill batterys work good in kids ride on's powerwheels.wanna hot rod powerwheel 18v will do donuts.|
|11-02-2014 07:13 PM|
|johnsongrass1||Ive been rebuilding my own packs with cells from MTO battery for a while. The best part comes from the options of what MhA you install. The cost is the same as buying new but you get a lot better cells that least longer and preform better. They also have drop in packs that replace the cells and you use the existing case. RC guys have been building thier own pack for years in RC car racing. You can make whatever size and shape you choose.|
|10-13-2014 07:21 PM|
|Joelk||Just thought I would update the post to let people know I have been using my 14.4V Impact Wrench with 18V Batteries for almost a year now, and it still seems to be working fine.|
|11-08-2013 12:33 PM|
I cant buy new nicad batt paks for my porter cable tools and I have 4 of them so had to replace the batts or throw away a costly tool and thats not going to hapen so I zapped my tired packs (sulfated according to a guy I talk to) with a tool made from a cord cut off a bad toaster. You apply house current 110 v across the + and minus terminals. I bared the ends of the plug and wire and added a 20 amp fuse on one lead with bare wire pigtail and put a gator clip on the other wire. Hook the clip to one batt term then all it takes is just a quick touch of the bare wire to the other term. The fuse may pop but the current surge kills off the deposits that bridge the poles of the batts. Some guys will zap with a welder and I have heard some use 2 or 3 car batts hooked in series to zap with.
If you do this be dam careful to not get shoked. Only for nicad so dont do this to hydrides, etc. Theres info on line about this for details.
If zapping doesn't help, replace them just like Irelands child say to. I bougt batts for a dewalt batt pak from on line place called voltman. I put better batts back in than it came with they were about $3 eack plus ship. They came with straps connected to the batts so hooking them together was easy. So for about $30 I got a new better pak that still runs.
The main thing with replaceing nicad batts is attaching them together. Reusing the spotwelded straps can be hard to solder so I used batts with straps already connected to the batts. If you have good batts that dont have straps on them you can use copper wire instead. Tin both the wire and batts before soldering them together. Dont overheat the batts. Using a good hot iron helps by quickly heating the connection so the heat dont soak in. May have to make some room for the wires inside the batt case if its tight.
You can also use a car or bike battery to power cordless tools in a pinch. Depending on the volts they might not run as fast but a drill will work. Course if you have a cord drill that would be better.
|11-08-2013 12:01 PM|
|11-08-2013 08:35 AM|
|Irelands child||Why not just pull those old and dead batteries apart and rebuild them with new Sub C cells(usually), found many places on the web including Ebay. I did a set of Porter Cable batteries and lately a Bosch with good results. Quality of the batteries does vary though, but my recollection is that it cost about $12-15 per battery pack plus about an hour each with a soldering iron to rebuild. Just don't take all of them apart at the same time as you really need a guide as to how they are 'wired' and wrapped up together|
|11-08-2013 06:30 AM|
|killeratrod||i guess this is the same principal, i took the neice & nephews power wheels ride on cars . the batteries were shot. so i hooked them up with some motorcycle batteries. them little ones were cooking all over the place.|
|11-08-2013 06:07 AM|
Thanks for the reply.
I have several 14.4V DeWalt Tools, but all of my 14.4 V Batteries are now bad. I don't plan to buy more so I am probably going to modify the tools so that I can use my 18V Batteries in them.
I have modified one of the 14.4V Tools(1/2" Impact Wrench) and the 18V Battery now plugs in and runs the tool.(I am using a bungee to hold the battery in place)
The tool seems to run normally, just faster than it did with a 14.4V Battery. I have not measured before/after speed, but I would guess it is in the 20-30 percent range.
It does not seem to be overheating or anything, but I have only run it for a few seconds and I have not run it under load.
I will report back after I have used it some, but I would be interested in hearing the reports from other if anyone has tried this on DeWalt or other brands of tools..
|11-07-2013 10:25 PM|
I have not done this, but with a DC motor the general result is that it will run faster. I cannot remember if increasing voltage produces a linear speed increase, but if it does, that would be 25% faster.
You forget these details when you get old like me! Usually higher voltage equates to lower amperage, which should not heat the motor up. Try it and see what happens and let us know.
|11-07-2013 05:25 PM|
Using 18V DeWalt Battery with 14.4V Tool
Has anyone done this?
If so, what were the results?
How long did the tool last?