The product can always keep good function for battery charge protection:
1.Pre-charge design(ie. Releasing voltage protection mode): if the battery is under condition of releasing voltage, it can be charged by smaller electricity to extend the battery life.
2.Fast charge: when the battery is under normal condition, it can be charged to make the battery quickly and sufficiently charged.
3.The set voltage charger (ie.charging protection mode): when the battery voltage is up to the full value, it can be further charged by the stated voltage.
4.Stop charges: When the charge electricity is smaller than the set electricity value, it means charger is sufficient, it will stop charging automatically. 

Products technical specifications:
Conversion efficiency: 16% (up)
Solar battery board: 5.5V/100mA
Input voltage: DC/5.0V
Output voltage: DC/4.2V/300mA 

Package:
Box: gift box
Unit size: 10.5x6.0x1.0cm
Qty: 20
N.W./G.W: 5.0/5.7kgs
Carton Size: 41.2x27.5x25.8cm

Primary Competitive Advantages:
. Well and High Quality Control
. Prompt Delivery
. New Product
. Customer's Designs and Logos are Welcome
. Competitive Prices
. Fit for Gifts & Premiums
. Earth-friendly Products
. In a Variety of Designs
. Small Order Acceptable
. ODM Accepted
. OEM Accepted
. 12 months warranty