X-Dragon Direct via Amazon offers the X-Dragon 9,000mAh Solar Portable Battery Pack
in Green, model no. 3364506,
Blue, model no. 3364167, or Black, model no. 3363564
for $16.99. Coupon code "LXN5LCGE" cuts it to $11.89
. Plus, Prime members receive free shipping
. (Non-members can spend $49 or more to qualify for free shipping; otherwise, shipping costs $6.33.) That's $43 off list and the lowest total price we could find. It features dual USB output for charging two devices simultaneously, LED flashlight with three light modes, and rain-proof design.