Ravpower has the Ravpower PD Pioneer 10000mAh 29W Portable Charger 2-Port Power Bank [ravpower.com]
for $32.99 - $19 off w/ discount code POP40 (apply in cart) = $13.99
. Shipping is free.
Dual output ports (total 29W) allow simultaneous charging of your devices
Adopting LG battery pack's means your charger is effective protected against even extreme charging issues
Works universally with USB-C and USB-A phones, tablets and more