If you have a newer LG (or Samsung) smartphone with a USB Type C connector, it will charge rapidly in your car if your car has a built-in fast charger or if you invest in a fast charger to plug into the accessory power outlet in your car. If you don't know what a type C connector looks like, this link includes a picture and a description: [
en.wikipedia.org]
If you do need a fast charger to plug into your car so that you can plug in your phone, they are not expensive. Less expensive than a good external battery and much lighter! Here is a link to a review of fast chargers in Wire Cutter: [
www.nytimes.com]
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