BAA Battery Portable Charger Power Pack Power Supply UPS for the Raspberry Pi Model B Model B+ Motherboard ReviewbP PP AA Battery Portable Charger Power Pack Power Supply UPS for the Raspberry Pi Model B Model B+ Motherboard POutput voltage a perfect match for both Model B and Model B+ Raspberry Pi. MicroUSB interface connectorPBuilt using the unique Gomadic TipExchange Technology that protects your investment by providing the ability to upgrade charging ports by simply swapping physical connectors.PSpecification: Input Voltage (4 X AA Batteries), Cable length (6 inches), Dimensions (2.5 X 2.5 X 0.75 inches), Circuit Design (Raspberry Pi specific), TipExchange enabled (Yes)PSafely engineered with reverse polarity protection, in the event batteries are accidentally put in incorrectly.PThis Gomadic Battery Pack can be reused forever by simply inserting fresh batteries, providing instant power on demand.