battery chargers; chargers for electric batteries; electric battery chargers; mobile phone chargers; portable field chargers; power supply devices for battery chargers; two-way wireless communication systems; wireless transmitters; batteries; rechargeable batteries; battery adaptors; battery holders; battery packs; power packs (batteries); electric batteries; battery boxes; battery starters; stationary batteries; anode batteries; battery terminals; power supply devices (batteries); portable power supply apparatus (batteries); power supply units (batteries); batteries for lighting; power sources (batteries); charging systems for battery operated appliances; wireless communication apparatus; battery charge indicators