I got one of these RAVPower portable chargers for my nephew a couple of years ago, and he told me it was great to use with his Nintendo Switch, because he could play the Switch with the charger connected and the battery charge would increase at the same time. This newer version is available at a discount when you use the promo code LKWZQ4C3.
Good deal on USB C portable charger that can charge a MacBook and a Switch
