Needed a Power Bank for my many devices because I'm now an avid audiobook fan and podcast listener. I'm never bored. Calls to AAA and other Battery Services have taught me *Not to use my vehicle for charging devices. I own Tiny speakers, Hotspot, iPhone. Even my Booklight is powered. Griffith Technology also sells at the major electronics stores and through the national shopping portals. (Legit.) Reviews are Few. Prices are good. Very professional. A refund was immediately issued because "the product is currently out of stock". When I pointed out that the product is still being offered on their site, I received an immediate answer. (Customer Service) "Shipping fees are non-refundable, and you will be responsible for return postage." Use Visa, Master Card, American Express, Discover, JCB and Diners Club. Also use PayPal, Apple Pay, Google Pay and Amazon Pay. Overall, why not? I will probably try them again in the future.