The cordless, battery powered lawn-mower is very appealing - low noise, no power cord and just charge and go.
The Enviromower was the first to make this possible. However, poor performance, short running time, long charging time, heavy weight & battery life deterioration were the price you paid for the convenience.
Now the development of the lithium ion battery has changed this.
Lithium Ion battery advantages -
- Does not deteriorate if left discharged.
- Does not need prolonged priming when new. One regular charge is all that's needed.
- Relatively low self-discharge - self-discharge is less than half that of lead acid batteries.
- Low Maintenance - no periodic discharge is needed; there is no memory.
- Can provide very high current so applications such as power tools produce more power
- Much lighter than lead acid batteries
- Recharges in less than a tenth of the time