The R145 14500 battery is a cylindrical li-ion cell classified by its roughly 49.2mm length and 13.5mm diameter, and is the rechargeable version of an AA Battery. They usually have a 3.6V or 3.7V voltage, button-top terminal, and most use a LiCoO2 (lithium carbon-oxide) ICR chemistry. While some come with built-in USB charging ports, most 14500 batteries are rechargeable in Li-ion smart chargers.


Model R145
Capacity 750 mah
Powered 2.78 Wh
Voltage 2.75V–4.2V
Cell —–
Size φ14.5*50mm
Net Weight 19.5g/0.69 Oz
Rechargeable YES
Brand SPERAS     ***Price Per Battery*** 
Speras R145 14500 Rechargeable Lithium Battery Micro USB (Button Top)

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