The CR435 Lithium battery has highly dense energy. The lithium pin battery was originally developed for lures for large fishing fleets. It has a capacity of 50mAH and a discharge rate of 5 mA. It can be used wherever a tiny non-rechargeable battery is needed. It is only 4 mm in diameter (0.16 inches, 5/32"). Excellent for fishing float and fishing bobbers , float and pole lights, LED Flashers, microphones, PDA pens. Nominal Voltage(V) 3v Dimension(mm) Diameter(mm) 3.0±0.05mm Height(mm) 12±0.3mm Weight(g) ≤0.2g Standard discharge current(mA)  0.5mA Nominal Capacity(mAh)  4mAh Temperature Range( °C ) -18~60  Schematic Diagram   Specifications: Type: High capacity lithium manganese dioxide Voltage: 3.0 V Amp-hrs: 50mAH Size: 4mm diameter x 35 mm long Weight: 0.9 to 1 gram Self-Discharge rate: >1% per year Nominal Current (mA): 5mA Pulse Current( mA): 25mA Output Voltage(V): 3.0V Amperage: 50mAh Chemistry: Li-MNO2 Advantages of using Lithium battery · Highly dense energy (800wh/I) · Can be used under a wide range of temp.(-20~60°C) · Ideal operating voltage (3V) · Long period of energy storage · Lowest discharging rate · No leakage and good reliability · Echo-friendly product which is free of heavy metals