I Picked up this Makita from a goodwill for cheap, it looked brand new with only a little sawdust on it. I do not have a battery or a charger for it and am not interested in buying them.
I opened it up and ran a couple wires to the battery connections, I added the capacitor because it has trouble starting. I do not think it is my power supply as it can supply 10 amps, and this only draws about 4, but it seems to need a big kick to get it going, the motor seems to get stuck even when I removed it completely from the saw. Whoever owned it before me may have abused it. I also re-lubed it.
I installed a jack in the bottom of the battery compartment for the cable I am using.
This will work just fine for the projects I may have in the future.