A:Answer The CHARGE 3 is definitely louder, and generally more powerful, also provides more bass. It has 2 x 10W of power, a 6000mAH battery that can last up to 20 hours of non-stop playing, and it is an IPX7 waterproof certified. While the FLIP 3 has 2x 8W of power, a 3000mAH battery that can last up to 10 hours of play time and IPx4 Splash-proof certification.