Dewalt DCMW564X2 18/36v XR Cordless Lawn Mower - 5ah supplied batteries, Will it be enough?

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Mower only - www.ebay.co.uk...
Get the 9ah Batteries here - ebay.us/z9phdm
You have seen what we have invested in but now it is time to find out if the 2 x 5AH batteries that normally comes with the cordless mower will give enough performance.