Lithium Battery Charger
[0003]

1A lithium battery charger

Basic Properties
rechargeable lithium battery 
plate method: linear charge 1% 
Charging current: 1A 
Adjustable charging accuracy: 1.5% 
Input voltage: 4.5V-5.5V 
full charge voltage is 4.2V 
Charging indicator: red, green means fully charged 
Charging Input Interface: mini USB 
Operating temperature: -10°C to +85°C 
Non reversible 
Weight: 10g external dimensions: 25 * 19 * 10mm 

Module Applications
section of this module is for single-or multi-section parallel lithium rechargeable battery, charging from the USB port to take power.

Instructions / Notes
1. Test current using ammeter in series with the charging plate with only 5V input. 
2 Charging current battery capacity is best @ 0.37C, Means 0.37 times the capacity of the battery. 
3 good contact leads with the battery connected is best. Otherwise, the battery voltage may differ. 
4 If the 5V input voltage is high, such as 5.2 or even 5.5, will result in insufficient charging current of 1000mA, this is normal. High voltage will automatically reduce the charging current, IC will heat up to 60 degrees in the normal working conditions. 
5 Reverse Input has no effect on the chip, but if the output battery terminals are reverse it may lead to serious injuries and can burn the IC.