I have done this for years now and seen no problems. I have a Lenovo from my job and it can use and 85 watt charger for steady charging but my 4 bank phone charger is a 100 watt charger with the highest port charging at 65 watt if only 1 device is plugged in. It does fine with this, but i do get the message in windows stating slow charge. I only use this on trips to avoid taking more things than i have to.