eCase via Amazon offers the Kmashi 400-amp 8,000mAh Compact Car Jump Starter Power Bank for $29.99. Coupon code "XGEMI5YK" cuts that to $28.99. Plus, Prime members bag free shipping. That's a buck under our January mention, $60 off, and the lowest price we could find. It features an LED flashlight with three modes and advanced safety protection.