Rechargeable batteries - NiCad and NiMh. I have a ton of the AA and AAA type. I also have adapters that will let you use the AA in the place of a C or D cell.
At some point in time these stop taking a charge. Some people erroneously call this the memory effect. What is really happening is that there is a crystalline growth inside the cell that shorts out the internal workings of the cell. With a quick large burst of current you can blow away this crystalline structure.
For batteries that will no longer charge on your charger, you can revive these with a car battery charger. (Caveat: I've been doing this for close to 20 years never had a problem, but wear a face shield and leather gloves for safety if you are paranoid). OK, so what you do is put the car battery charger on 10A manual mode. Put the red (+) clip on the table / workbench. Now hold the AA battery with the positive (+) side against the red clip. Take the black (-) clip and tap it against the negative (-) side of the battery. DON'T HOLD IT THERE! You'll see the current meter on the charger jump to 8-10A and back to 0, and you'll get some sparks. Repeat this 10-20 times, just quick little taps. If you feel the battery getting warm, STOP!
This technique also works with portable tool batteries (drills, saws, etc) provided you can take the plastic battery case apart and get to the individual cells. My original 12V batteries for my Makita drill I got in 1995 *still* take a charge.
I've read on here and other places about the de-sulphating of car batteries, and I believe this is a similar process, but I've never tried one of those units on a dead AA battery.
Buyer beware, caveat emptor, safety nazis abound, do at your own risk, yada yada yada. Like I said, 20 years, never a problem, but be careful and don't over stress the battery. If it is bulging, don't try this trick! If it is leaking, toss it. Don't try this on alkaline batteries.
you know those red nozzles on WD40 and such - I keep them all in one place, keeping them on the spray bottle gets them lost too quickly.
And of course, I never throw them away when the spray is empty.
Same thing goes for spray nozzles from aerosol cans. I've broken enough spray nozzles on mostly full cans of lube, carb cleaner, etc. that I've learned to keep one or two of each style from empty cans so I can replace broken ones.
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In an earlier post I mentioned about tool batteries that would no longer take charge, I was talking about when they were cold or when you held the drill chuck to keep it from turning when you turned it on to heat it up the battery wouldn't take charge either way. After laying them up for a long period of time and then putting them on charge they began taking charge again and hasn't failed to take charge since. I used to know how to read the numbers on craftsman tools and be able to tell what year they were made in but I have forgot how. If someone knows how to tell by the numbers would you post it, I would be interested in knowing how old it is myself.Rechargeable batteries - NiCad and NiMh. I have a ton of the AA and AAA type. I also have adapters that will let you use the AA in the place of a C or D cell.
At some point in time these stop taking a charge. Some people erroneously call this the memory effect. What is really happening is that there is a crystalline growth inside the cell that shorts out the internal workings of the cell. With a quick large burst of current you can blow away this crystalline structure.
For batteries that will no longer charge on your charger, you can revive these with a car battery charger. (Caveat: I've been doing this for close to 20 years never had a problem, but wear a face shield and leather gloves for safety if you are paranoid). OK, so what you do is put the car battery charger on 10A manual mode. Put the red (+) clip on the table / workbench. Now hold the AA battery with the positive (+) side against the red clip. Take the black (-) clip and tap it against the negative (-) side of the battery. DON'T HOLD IT THERE! You'll see the current meter on the charger jump to 8-10A and back to 0, and you'll get some sparks. Repeat this 10-20 times, just quick little taps. If you feel the battery getting warm, STOP!
This technique also works with portable tool batteries (drills, saws, etc) provided you can take the plastic battery case apart and get to the individual cells. My original 12V batteries for my Makita drill I got in 1995 *still* take a charge.
I've read on here and other places about the de-sulphating of car batteries, and I believe this is a similar process, but I've never tried one of those units on a dead AA battery.
Buyer beware, caveat emptor, safety nazis abound, do at your own risk, yada yada yada. Like I said, 20 years, never a problem, but be careful and don't over stress the battery. If it is bulging, don't try this trick! If it is leaking, toss it. Don't try this on alkaline batteries.
Changing oil on small engines (lawnmower, chipper, splitter, etc):
If it is a new engine, before I add oil to it, I decide how I'm going to change the oil. In most cases they want you to just pull the plug and try to catch the oil as it drips everywhere.
If it is a used engine, well, the first oil change isn't fun, but subsequent ones can be easier.
I buy those quick connect air hose adapters and put one of those on in place of the drain plug. On a lot of them, it just screws right in. Sometimes I have to do an adapter, but not normally. If it sticks out too far or looks like it could be knocked around, I put a right angle pipe adapter on it. (Sometimes have to pull the engine from the mount for this).
Now when I go to change the oil, I have the male end of the quick connect, and a short hose attached to it. Warm up the oil, shut off the engine, attach the male end, and let it flow into my oil catch pan.
I haven't had one leak on me yet.
-Steve
Changing oil on small engines (lawnmower, chipper, splitter, etc):
If it is a new engine, before I add oil to it, I decide how I'm going to change the oil. In most cases they want you to just pull the plug and try to catch the oil as it drips everywhere.
If it is a used engine, well, the first oil change isn't fun, but subsequent ones can be easier.
I buy those quick connect air hose adapters and put one of those on in place of the drain plug. On a lot of them, it just screws right in. Sometimes I have to do an adapter, but not normally. If it sticks out too far or looks like it could be knocked around, I put a right angle pipe adapter on it. (Sometimes have to pull the engine from the mount for this).
Now when I go to change the oil, I have the male end of the quick connect, and a short hose attached to it. Warm up the oil, shut off the engine, attach the male end, and let it flow into my oil catch pan.
I haven't had one leak on me yet.
-Steve