This is real LIR2032 charger and keep all specification for coin cell charging.

If you try buying cheap Chinese charger please look close on charger sticker, or other specificatios 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 LIR2032 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
• Electronics components covered with heat string tube
• Quality plastic battery holder, easy remove, reliable battery hold
• Metallic USB A
• 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

*Battery type CR2032 is today the most widely used type of coin battery (at least 90% of all devices on the coin battery). It is used in IT technology (for backup memory settings), and small lamps, clocks, tachometers, sensors ... *

• In most cases you can replace the CR2032 battery with rechargeable version LIR2032 and thus save lots of money because LIR2032 can be recharged up to 500 times which means spared 500pcs batteries !!!

• Stop wasting money on non-rechargeable batteries!

• you can save up to 500 times the price of a non-rechargeable battery which is really a lot of money.

Specifications:

• charge one LIR2032
• 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 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!