This is real LIR20xx charger and keep all specification for coin cell charging.

If you try buying cheap Chinese charger please look close on charger sticker, or other specifications if charging current is around 4mA, usually sellers write that you need charge 2 batteries together but this not working if you have different discharge level.

I bough one charger and charging current is 20mA this is 5 times as manufacturer recommended !!!

This charger is really designed to for LIR20xx batteries.

This charger is under hard development and PCB can be redesigned but without effect on functionality.

I can not include battery because sending lithium batteries to some countries is restricted :(

You can buy really cheap batteries on ebay. No battery included !

Main advantages:

• No special power supply needed, just your USB charger
• Super small
• Ideal for travelling, no other big adapter or wall socket reductions ... just your USB
• Reliable Charging controller from Microchip
• Full charged Lir2032 have 4.2V good for your DIY 3.3V project when 3V from CR2032 battery is not enough

Specifications:

• charge one LIR2032 LIR2025 LIR2016
• 2 LED shows charging status
• RED - Charging
• GREEN - Charged
• Automatically cuts off power when battery is fully charged
• Micro size
• The charger is powered by a USB (no need to purchase a separate adapter for international use.)
• High accuracy preset output voltage regulation (+/-0.75%)
• Highly advanced linear charge management controller
• On-chip thermal regulation
• Preconditioning and end-of-charge
• Under-voltage lockout
• Integrated Pass Transistor
• Integrated Current Sense
• Reverse Discharge Protection
• High Accuracy Preset Voltage Regulation: + 0.75%
• Automatic Power-Down
• Thermal Regulation
• Input power : Standard USB 5V
• Charging time: 12 hours
• Charging current: 4mA

NOTE:

• Only for use with rechargeable LIR2032 LIR2025 LIR2016 cells!
• Do not try to recharge non-rechargeable Lithium coin batteries like CR2032!
• Do not charge unattended.
• Do not charge damaged cells.
• Be sure about polarity, check battery polarity before inserting in to charger, reversed battery can destroy your charger and can explode!