Sooooo, I bought a battery powered lawn mower 5 years ago and since then I've replaced the batteries once and the charger once. Now its in need of another set of batteries primarily because they were cheapo Chinese crap and I just found out that the charger does not "maintain" them like I thought and so I've probably been charging them way too much. The internals of the mower are just a set of 12v scooter batteries wired in series and rated at 20ah. There is no brain or circuit board. The batteries are just wired to a on/off switch that goes directly to the electric motor. Full on/ full off.
So here's where the redneck in me kicks in. The batteries are expensive-ish, say $110 shipped for a pair of low end ones. They barely last through the whole yard when new and for the last 6 months I've had to do 1/2 the yard one day and 1/2 the next. So after opening it up and seeing the utter simplicity of it...why not use car batteries?
I'm thinking two Honda Civic size batteries would last super long. I would probably need to make the wires beefier although the main ones appear to be 10-12 gauge and are easy to replace. My main concern would be over-revving the electric motor. From what I've read a car battery is like 45ah but that has to do with discharge rate. I would think 24 volt is 24 volt no matter the size of the battery so will it spin the motor faster with the larger batteries? It shouldn't but before I succumb to the redneck in me what do you guys think? Next is a lift and some 33's!
So here's where the redneck in me kicks in. The batteries are expensive-ish, say $110 shipped for a pair of low end ones. They barely last through the whole yard when new and for the last 6 months I've had to do 1/2 the yard one day and 1/2 the next. So after opening it up and seeing the utter simplicity of it...why not use car batteries?
I'm thinking two Honda Civic size batteries would last super long. I would probably need to make the wires beefier although the main ones appear to be 10-12 gauge and are easy to replace. My main concern would be over-revving the electric motor. From what I've read a car battery is like 45ah but that has to do with discharge rate. I would think 24 volt is 24 volt no matter the size of the battery so will it spin the motor faster with the larger batteries? It shouldn't but before I succumb to the redneck in me what do you guys think? Next is a lift and some 33's!
