Getting hard to find quality Ni-cad batteries. Chinese ones are crap. Less than 6mo old won't hold a decent charge.
I have a fuck ton of B&D 20v yard tools and miscellaneous shop tools.
Don't want to thow away my trim saw yet.
So I cut up an old dead battery pack and sacrificed one of the cheapo 20v chargers to make an adapter.
> yes I know dewalt makes an adapter to use their 20v batteries on the old 18v tools, but this is the only dewalt thing I own. And all the batteries for it are junk.
Bottom of the adapter
Screw holding adapter to tool
I took the top off the charger.
The screws holes in the charger line up with two plastic posts on the battery lid.
The terminals that interface with the tool were originally held inplace by one of the battery cells. So I used a peice of wood and a couple shims and to hold that up in the stem of the adapter and another piece with a notch to give support to the front of the charger bracket.
I then pre-drilled a hole through the wooden pieces and put in a screw to secure them.
The battery fits snug in the old charger bracket.
I also bent a piece of galvanized wire and inserted in into two of the other posts to make a latch for the battery.
No modifications other than a 1/4" hole for a retaining screw were done to the actual tool.
Forgot last pic.
I forgot to say I used a short piece of 14ga stranded copper wire to go from the charger terminals to the old battery terminals in the stem.
The electronics in the charger are completely bypassed. I most soldered directly to the pins that come through the circuit board connected to the tangs that interface with the 20v battery.
>>1185038
why not just get a black and decker circular saw then toss the rest? $40 for a 5 1/2in blade, not the best but thats what you get from B&D these days. neat that you can hotwire a new battery on but for most people its too much work and they'd rather toss the whole thing and start from new.
https://www.amazon.com/BDCCS20B-20-Volt-Lithium-Ion-Circular-5-5-Inch/dp/B00FRMSMRE
everytime i need 18v dewalt batteries i just buy one of these:
https://www.amazon.com/DEWALT-DC970K-2-18-Volt-Compact-Driver/dp/B002RLR0EY/ref=sr_1_3?s=hi&ie=UTF8&qid=1496115252&sr=1-3&keywords=dewalt%2B18v%2Bdriver&th=1
$75 for 2 batteries, new drill, and a charger....
>>1185107
I would but I'm done with ni-cad.
>>1185104
I will do that when this one is dead.
I always try to repair or upcycle what I have before I buy new.
This cost me nothing but 40 mins of my time on a Sunday.