This Universal External Battery Bank drops from $8.99 to $5.95 at Mini In The Box. Plus, shipping is free. This is the lowest price we could find by $2. It is available in eight color choices, and includes both a rechargeable cable and a phone adaptor cable. This battery bank will charge most phones up to 100%, but reviews show some models only received a 30% charge. Note: make sure you un-check the "shipping insurance" box to avoid a $0.99 fee. There is no sales tax.