mylimeade via Amazon offers Prime members the Limeade Jolt 5,000mAh External Battery Pack Charger with microUSB (pictured), model no. L50X2M, or with Lightning Connector, model no. L50X2L, for $24.99 with free shipping,. (Non-members can get free shipping with orders of $25 or more; otherwise, shipping adds $5.23.) That's at least $10 under the lowest total price we could find for a similar charger elsewhere. Only the type of built-in charging cable differs between these models; both feature a normal USB port for charging other phones and devices.