Comment by bloat

I invested in a Chargemap pass for my trip to France this summer. One card which works in nearly every French charger. Plug in, tap the card and it starts charging. Tap the card again to stop. That's it. Cost 20 euros for the card, and I think the rates are a little more than the native apps. But not enough to bother me. Highly recommended. You still have to deal with idle charges though.