How to replace batteries on CMM1000 (diagram?)

I have a CMM1000 which needs new batteries. I have pretty much figured out how to replace them, but I haven't found replacements yet. Please let me know where you found them! You need to remove the (black) top cover - there are 6 screws involved. 2 screws are in recesses toward the front on top. You will probably need to remove debris to access these. They are Torx type, but if you don't have Torx bits, they have a slot which works with a flat head screwdriver if you're careful.  The next 2 screws are toward the back down at either side. These are also the Torx type and they have star washers. The last 2 screws are up in the charging area. They are regular phillips and they attach to the circuit board. With all screws removed the top cover will come free. Be gentle though - there are wires from the charging meter that are still attached. You have to maneuver the cover over the height adjustment handle, then flip it up to reveal the circuit board. Disconnect the red and black wires from the terminals marked "TB2 Fuel Gauge Red" and "TB3 Fuel Gauge Blk" The top is now free and can be set aside. There is a push-fit block of styrofoam which can be removed and set aside. You should now be able  access the battery terminals which can be removed with a nut driver or socket wrench.  There is a jumper wire also. Make a note of the polarity of all connections. At this point the old batteries should slide out from their styrofoam cradle (I haven't actually tried this yet).  From this point you will reverse the steps to install your new batteries. Hope this helps.

I ordered batteries from www.batterysolutionsinc.com for a great price and they arrived quickly as promised. Thanks Sportster640.

Then I followed mongodaddy's great instructions for installing the new batteries. I have two point to add that may be of interest to others.

First, the connecting posts on the replacement batteries are different from the originals. The work just fine, but be mindful of the direction the cables are attached because when you turn the pair on its side to strap it down, if the cables aren't screwed down in the right position, it can make them too short to reach the circuit board. I had to reposition mine to make them work.

Second, the circuit board hangs off of two slots on the back of the housing. I found that it tended to droop on the front edge enough that when I replaced the mower's top, the screws that go through the top and connect to the circuit board weren't long enough to engage. My solution was to cut a 3" piece of styrofoam to prop up the left edge of the circuit board. That' exactly the same material that's already inside securing the battery, so I figured one more piece couldn't hurt. It worked like a charm and I was able to tighten all the screws.

The new battery is currently charging, but it looks like all is well and I saved more than $100 over lugging the mower to a B&D service center. Thanks for the great advice.

You can purchase the original black & decter batteries here:

http://www.acehardwareoutlet.com/productDetails.aspx?SKU=296040001

Aftermarket batteries will not be the same quality.

I'm grateful to everyone who posted information on buying and installing a new battery. I ordered mine from Battery Solutions and it came in a few days. Great price! We'll see how long it lasts. I only had some problems with the two smaller white foam inserts. One fell out when I lifted the black top and don't know where it was supposed to go; and I couldn't get the second one wedged back in between the motor and the battery after I put the new batteries in. So I positioned them to support the lid and still close it - and hope that's enough! I did use double sided stick foam tape to join the two batteries together. It worked very well.
Grateful,
Sandy

guy's there a recall on this mower better see service center. a board recall & upgrade lead wire recall.