20. Mophie iPhone 5 Juice Pack Plus

Price: $120 (Rs 7,160) 

The reigning king of smartphone charging cases takes battery performance on the iPhone 5 to another level with the Juice Pack Plus. Supporting a 2100 mAh cell efficient enough to produce 120% extra vitality, Mophie’s new charger can generate up to 10 hours of LTE usage and nearly 50 hours of audio playback, securing Apple’s next-gen mobile in a stylishly durable jacket.