I've been using this one for a few years: https://smile.amazon.com/dp/B01ISLH4V0/ref=cm_sw_r_cp_apa_glt_fabc_D3VDDR8MYJS7QHK3D5KZ?_encoding=UTF8&psc=1

I'm using These which are quite similar (might even be the same cable sold under another brand or something) Turbo works and everything. The dangerous thing would be if your external power pack couldn't put out 3A *2.4A.