| 摘要 |
A battery backup and charging device (BBCD) is described. The BBCD includes a battery, a charger coupled to the battery, AC prongs coupled to the charger, and a connection module adapted to connect the battery and charger to the mobile device. The charger may provide charging to the battery and an internal battery of the mobile device in parallel. The BBCD and mobile device may be enclosed in a single housing. The charger may include a planar transformer. |
