Lithium ion (Li-ion) Button battery high energy density, and the voltage is 3.7 V.
Key Features:
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1) High operation voltage.
2) Wide operation temperature range: -20?~+60?.
3) Non-magnetic stainless steel case, hermetically sealed.
4) No leakage problem.
Specification:
Model: LIR2032
Size: D20x H3.2 mm
Nominal Voltage: 3.7 V
Nominal Capacity: 45 mAh
Weight: 2.8 g
Application:
Bluetooth earphone, flashlight, watches, car key remotes, remote controls, toys and so on.