If they stick to it, you'll eventually want to get this charger: https://viflydrone.com/products/vifly-whoopstor-6-ports-1s-battery-storage-charger-discharger h

If they stick to it, you'll eventually want to get this charger: https://viflydrone.com/products/vifly-whoopstor-6-ports-1s-battery-storage-charger-discharger https://viflydrone.com/products/vifly-whoopstor-6-ports-1s-b... It'll do storage voltage (which very few 1S chargers support), which is much better for battery longevity.