I have the Remington Cordless Power Mower Model MPS6017A and I am looking for a new battery and a replacement key RMK60A where can I purchase these items in or around Richmond, In?

Sounds like you need a new battery pack.

http://www.manualslib.com/manual/498914/Mtd-18a-212a783.html#manual

The batteries are defective in this unit. It should be returned to the dealer that you purchased it from and get exchanged, or your money back. Another way to test this mower is to charge the batteries fully, then test them. If they are truly fully charged, run the mower until it slows down, and test the batteries again. If they are still charged, (unlikely) then the problem is in the motor itself and still should be returned.

Need to know the model number.

You can do this ,but why take a chance of burning up your mower. You should be able to buy a key for this unit from your local dealer. I believe these keys are all of same cut, like a light switch. this way if you can con someone else into mowing your lawn, they can't say I'm not mechanical and don't know how to jump wires, or worst , see first sentence.I feel this will be the easier way. GOOD LUCK.

The Remington battery has 5 Alkaline battery cells. The model batteries are Yuasa NP5-12T, NP 5-12T .250 terminal or Equivalent. It is a very Easy R & R job. Takes about 10 minutes. You should be able to pick up the batteries for around $10 - $15 each.

Remington Saws have ceased operations and, unless you like to make your own replacement parts, they are prone to failure. The gearbox is sealed and the motor brushes are not available anywhere. Look elsewhere!

those you have to break off and replace with a new cap, because when you put them on the barb in the cap digs into the shaft to help hold it on

I have owned a cm1000 for about 10 years and have been very pleased with it. I received a replacement charging circuit board as a recall item but other than that no problems. I can usually mow my front and back yards about twice on a charge. I think I will replace the batteries this year for the first time because they are not performing well.

When batteries are only used seasonally, and they are stored, they can become damaged from weather or from storing them when they are not fully charged. In general, batteries used seasonally will have a shorter lifespan, so it sounds like you likely need a new battery. Check out http://www.batteryinternational.com/electric-lawn-maintenance-batteries.html for a replacement, and be sure to charge it fully before storing.