With airlines cracking down on how many portable chargers you can bring on your next flight — and the wattage limit on chargers — keeping your devices juiced up on long flights is going to be even more difficult. American Airlines just announced that portable chargers on board must be visible to the crew at all times (not in overhead compartments) and are limited to two per person. What’s more, they have a 100-watt maximum, and there’s a high chance the charger you own might not meet this