NewerTech has introduced a new NuPower replacement battery for Apple's 14-inch G3 and G4 iBooks. The battery boasts 34 percent higher capacity in comparison to the original Apple battery and features a 74 watt-hour capacity delivering up to eight hours of battery life (compared with the 6-hour life offered by Apple's original battery). The NuPower replacement will work with all 14- and 14.1-inch iBook models between the G3 600MHz model and the most recent 1.42GHz G4-based model. The company is also offering a 59 watt-hour battery for the 14-inch iBook with approximately 7 percent more power than the original Apple battery. The new 74 watt-hour replacement battery is priced at $130, while the older 59 watt-hour model is available for $100. All batteries sold by NewerTech contain no mercury to remain environmentally friendly when disposed of or recycled, and a free recycle pass is included for the old iBook battery.