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.
Specifications:
| 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*** |