Thumb Score: +20 Amazon has 56-Volt 5.0 Ah EGO Power+ Lithium Ion Battery with Upgraded Fuel Gauge (3rd Generation, BA2800T) on sale for $179. Shipping is free. Lowe's has 56-Volt 5.0 Ah EGO Power+ Lithium Ion Battery with Upgraded Fuel Gauge (3rd Generation, BA2800T) on sale for $179. Shipping is free or choose curbside pickup where stock permits.