Mugen Power 4400mAh Battery for HP iPAQ 210 211 212 214 Enterprise PPC/PDA Guaranteed 100% compatible with HP iPAQ 210 Series Pocket PC's The most powerful battery available for the iPAQ 210 Enterprise Series. Manufactured by Mugen Power which means Quality! One-Year manufacturer's warranty. Latest Lithium Ion battery technology gives the best performance possible compared to other battery technologies. Amperage: 4400mAh; Voltage: 3.7v