I assume that those GTX radios all have fixed permanent antennas. Others are right, if you're going to invest in radios. You should invest in radios with removeable antennas, such as the BTECH GMRS PRO, even though this particular radio it's supposed to have a removeable antenna, because Digital Data Rule.
an early review i read said they had glue around the antenna on theirs, but i've got four in this house and not a one gave any resistance at all. i also have this radio's cousin the Vero VR-N76 but that's sold for amateur use. if you mash the "battery status" indicator in the mobile app it will set it to "factory test mode".
i upgraded the powerbanks in my go-bag valets recently. ugreen has a very slim 25k mAh batter with three PD outputs and it'll fill my iPadPro, iPhonePM 15 in record time.
**just a reminder that many devices that claim usb charging because they slap a type-C port on it apparently save a dime by not putting in whatever is in a typeA-to-typeC cable that allows power to pass over it because a typeC-to-typeC off an actual USB charger will not charge the radio** i have a lot of gear (including radios) where you have to use an A-to-C cord from a wall wart, to charge off a powerbank, or computer's type-A port that way.
no doubt an EE or experienced ham will explain what i misunderstood about this but the end result is the same: don't count on type-C wall warts and break-out boxes and c-to-c cables to do a g-ddamned thing for you unless you charge off a computer or your Uniden in-dash unit with an output there.
amazon has many good options for 12'+ typeA-to-typeC cables. i get them braided with binders and color match the valets so at a glance i can see if it's ready or not.