A cordless lawn mower

I have been using an electric mower for some time. I would like to convert it to a cordless one. This should be an easy conversion. All I need is a battery, an inverter and a charger. I can get a solar trickle charger for $10 dollars. Not using comercial electricity would reduce my phone bill and the drain on the power grid. You can reclaim the lead and acid from a lead acid battery and this applicaiton should accomodate it.