NI-cad or Lithium Ion Battery drill

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Ni-Cads weigh a ton. My old 18V B&D Ni-Cad packs weigh three times what the new 20V Li ones weigh, with half the power. The only advantage I can see with them is they give more warning before dying, and they are much cheaper (usually).

The real question is what tool system do you buy? Dewalt has a 20/60V battery pack now; 2 of them can run their chopsaw, and there is an AC/DC adapter so you can run it wired as well.

The weight alone is why I went to Li. My 12V Li Hitachi weighs about what the 18V B&D battery weighs, and has enough power to drive hundreds of screws (mounting boxes and ENT clamps on wood studs) before it needs a recharge. Charge time on Li batteries is a fraction of Ni-Cad too.
 
btw, there are many different types of Lithium batts ;)
 
I have a huge collection of legacy Dewalt 18V tools and about 10 batteries. At this point it would cost a fortune to jump ship. When the packs wear out it's possible to have them rebuilt with higher-capacity NiCd cells, or with NiMH cells. (only the newer yellow chargers support NiMH) They briefly sold Li-Ion batteries that fit the legacy tools as well.

Dewalt finally came out with an adapter to allow the use of the newer Li-Ion batteries with the legacy tools:

Dewalt-DCA1820-20V-Max-18V-adapter-with-2Ah-Battery.jpg

The big killer for Li-Ion is running the voltage too low. The 20V Max tools have the low-voltage protection built into the tool, so presumably that's also built into the adapter.
 
iwire is on the right track. Get a tool that you will use and have someone else handle the replacement :)

IMHO the single most annoying 'feature' in a battery powered tool is a fully functional _tool_ with an unusable battery. I have a Milwaukee drill and saw which (if they were plug in) would be perfect; not new but fully functional with lots of years left...but replacing the batteries is difficult; I only see generic replacements with unknown cell quality, not OEM packs.

I am strongly tempted by the Ridgid battery warranty, but don't know enough about it to be sure it isn't a gimmick.

-Jon
 
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lithium. not even a question.....

That's the way I went, only saw one Ni Cad and as posted here it was heavy.
Dewalt 20 volt w/2 batteries, Charger and soft case $99.00. At the Blue box store.
As much as we've spent there in the last 6 weeks they should have given it to me.... :)
Remodeling a bathroom and several other things. Bath's can be very expensive.....
 
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