Overview Swellpro smart car charger offers a cost-effective solution to assist in keeping your drone battery in top condition, increasing the lifespan of the battery, and realizing that you can freely charge the drone battery at any location. Specification Input voltage: 10-30V DCOutput voltage: 1.0-30.0V DCMax. input current: 9ABalance current: 0.5A/Cell MaxCharging current: 0.1 - 8....