Can I charge my Polar device with another kind of USB cable or via a wall outlet?
Your Polar device (Grit X, Grit X Pro, Grit X2 Pro, Ignite, Ignite 2, Ignite 3, M430, Vantage M, Vantage M2, Vantage M3, Vantage V, Vantage V Titan, Vantage V2, Vantage V3) can only be charged using the custom Polar USB cable. Do not use third-party cables.
You can charge your device via a computer or a wall outlet. When charging via a wall outlet, use a USB power adapter (not included in the product set). If you use a USB power adapter, make sure that the adapter is marked with "output 5Vdc" and that it provides a minimum of 500mA. Only use an adequately safety-approved USB power adapter (marked with "LPS", "Limited Power Supply", "UL listed" or “CE”). Fast chargers can also be used as long as they meet these specifications.
Do not charge the Polar M200, M400, M430 or M460 with a 9-volt charger or higher, as it can damage your product.