HP Armada 4200 Armada 4100 and 4200 Families of Personal Computers Maintenance - Page 16

1.4.7 AC Adapter The AC adapter supplies DC voltage to the system converter to operate and/or charge the installed battery pack(s). The adapter provides sufficient power to charge each main battery pack in 1.5 hours or less with the system off, or in 2.5 hours or less with the system on. The AC adapter power specifications are presented in Chapter 6. 1.4.8 Automobile Adapter The automobile adapter is used to charge the computer while traveling in an automobile. The Automobile Adapter power specifications are presented in Chapter 6. 1.4.9 Lithium Ion Battery Pack Lithium Ion (Li-ion) battery packs offer superior performance over nickel metal hydride batteries. NiMH batteries are not recommended. Li-ion batteries weigh approximately half as much as the NiMH battery packs and are compatible with the External Battery Charger and its charging options. They are available in both battery handle and modular bay forms. 1.4.10 External Battery Charger The External Battery charger has the following features: s Two battery charge slots s Accepts Li-ion handle and modular batteries s Fast charges one battery in 1.5 hours s Fast charges two batteries in 3 hours 1.4.11 External Keyboards The following external full-size keyboards are supported: s Enhanced III keyboard s SpaceSaver keyboard s Alternative design keyboard 1.4.12 External Monitors The following external monitors are supported: s QVision 172 Color Monitor s 151 FS Color Monitor s 171 FS Color Monitor s V50 Color s V70 Color 1-8 Product Description