I would like to share some information about Ni-Cad Batteries.
I doubt that it is a secret to most of the people on this site that Ni-Cad batteries have a memory, but wonder how many get the most out of their batteries.
Case in point: I recently bought one of those attachments that goes in a 1/2 inch drill to raise and lower the knee on my vertical mills. (Best $35 I have spent in a while). It uses some pretty good torque to lift the knee so the maker recommends using a corded drill.
I also have a bunch of DeWalt 18 volt tools and XRP batteries, some of which are nearly 10 years old. While the old batteries are not up to new standards, they are probably about 70 or 80 percent of new level.
One of my brothers bought the same kit that I have a couple of years after I bought mine and he is on his third set of batteries. When he needs the drill, he charges the batteries without discharging them first. Bad mistake.
What I do is when my batteries get too low to be useful for the task at hand, I put them in my vacuum and let them run down until the vac is hardly turning. Before I bought the vacuum, I used the flashlight to run them down. It took longer, but it worked fine. One other thing. I always let them cool down before charging them and again after charging them before use.
Hope this helps save my fellow HSM'ists some $$$$$$ on Ni-Cads.
OPEN EYES, OPEN EARS, OPEN MIND
BETTER TO HAVE TOOLS YOU DON'T NEED THAN TO NEED TOOLS YOU DON'T HAVE
MY NAME IS BRIAN AND I AM A TOOLOHOLIC