AC vs DC motor?

I replaced the battery when I noticed that it was not taking on a full charge. The power was depleting rather quick after a charge. It was still working when I stopped using it but I decided to get a new one before it gave out completely. I bought a Vector 450 amp jump starter and it works just fine. A fringe benefit is that you can jump start your car with it if need be.

The old battery had a VU meter. My current one has lights showing the level of charge. As far as use, I leave charging during the week and only unhook from charging when I play music. On weekends when I listen to more music I leave unhooked from the charger all weekend and do not worry about it. There is plenty of juice to run a TT motor for a week or so straight between recharging.

DC motors don't necessarily mean that its power source is a battery, in fact most run off of a DC power source. Why all of this discussion about batteries and none about the advantages or disadvantages?
Again, the advantages/disadvantages boil down to the execution of the design in regulating/maintaining speed.
Bob P.

I have a Platine Verdier, which I used originally with a standard AC supply - very good it was then. About a year ago, I bought a Battery PSU (GT Audio in the UK - www.gtaudio.com) supplying DC power to the motor, and this transformed the Platine - much quieter, less surface noise, greater dynamic range - one of my best ever upgrades. If all DC power supplies are similar, then go for it.

I have an original Oracle which has AC not DC. The later Oracles went to DC and then back to AC. I have a MacMod Box by Mod Squad which is a speed stablizer so it runs at 33 1/3 or 45 rpm. Yup it's the one that started the whole deal with going with the optional power supply for Linn,Oracle,Vpi etc.etc. The difference between DC and AC is AC has alot less tourque and takes time for the platter to get up to speed. With the early Belt Driven Oracles if you were dry cleaning your record with a brush the record could just stop with little pressure. Now this is what i was told anyway and my power supply is plugged into the wall.