No smoke or mirrors here! Biggest lead acid battery possible for the truck model, 8 hr high frequency charger. The secret is incremntal gains from the motors, softwear, controllers, all desgiend & manufactured by Jungheinrich to work holistically together, short routing of electrics, black/white hydraulic valves for minium friction/energy loss, regenerative braking (& lowering in some cases). Factory backed guarantee - if it doesn't last 2 x 8 hours shifts you get a free additonal battery. Simple!