This 3.8V 70mAh Li-Polymer battery is a compatible replacement for Garmin Forerunner 45S. Compare the number printed on your current battery, its voltage, chemistry, dimensions and connector before ordering.
Included: One replacement battery pack.
Current Estimated Delivery Date: 1-2 Weeks
Battery specifications
| Voltage | 3.8V |
| Capacity | 70mAh |
| Chemistry | Li-Polymer |
| Energy | 0.27Wh |
| Dimensions | 29.80 x 13.20 x 3.00mm |
| Battery weight | 2g /0.07 oz |
Replacing your Garmin Forerunner 45S battery
Compare the connector shape, wire arrangement and polarity with your original battery. Check all listed specifications; a similar model name or matching voltage alone does not confirm a fit.
Compatible equipment models
Garmin Swim 2, Forerunner 45, Forerunner 45S
Replacement battery numbers
Garmin 361-00104-00, 361-00104-20