• Charge module- Linear charging.
• Current- 1A adjustable.
• Charge precision- 1.5%.
• Input voltage- 4.5V-5.5V.
• Full charge voltage- 4.2V.
• Led indicator- red is charging, green is fully charged.
• Input interface- micro USB.
• Work temperature- -10° to +85°.
• Inversed polarity- NO.
• Size- approximately 25X19X10mm.

NOTE:

1. An ammeter can only be connected to the 5V input end of the module.
2. It is best if the charging current is 37% of the battery capacity. If you are charging a 1000mAh battery, a current of 400mA is sufficient.
3. The connection wire should not be too thick.
4. Ensure the connection point is secure.
5. If the input voltage is too high, such as 5.2V, the current will be less than 1000mA; this is normal. This is a protection function; it automatically reduces the charging current to avoid damage to the chip.
6. No reversed polarity.