With this 2 original Hubsan x4 batteries, always ensure you have one battery in your drone, one ready to replace and charging.
This charger have a power management IC and the protection voltage is 4.1V ±0.1V.Normally,the led light will turn off when voltage over 4.0v.If you found the led light blinks, it means your battery is close to full charged and the voltage is around 4.0v.It is not a problem of the charger. This phenomenon often occurs to nearly full charged batteries, exhausted batteries will not have this problem.
This Charger could also fit to charge 2 pcs Hubsan x4 H107L H107C H107D SYMA X5C X5SW Quad batteries.
Voltage input: DC 5.0V Current Input:0.5A-2.5A
voltage output: 4.2v 500mAh
Safety: Over Charge Protection and Short Circuit Protection
Intelligence: Charging Indicator Light Shows Charging Status
Package include:2 x batteries+ 1x charger
Must have for Hubsan X4 H107C plus drone. You don't need to charge on the drone now - Fly while your batteries are charging.
Two backups on hand ensures longer flying time.
Capacity: 520mah Voltage: 3.7v.Built-in protection mechanism ensures safe charging and use.
Package include:2 x Original batteries+ 1 charger. Charge 2 batteries at the same time.
The Charger also fit to charge 2 pcs Hubsan H107L H107C H107D SYMA X5C X5SW batteries.