I just got a new Gazelle Professional and I'm getting some rather disappointing battery life (2.5 hrs at best.) I checked to see if System76 themselves sells a higher capacity than the one included stock. As far as I can tell they do not. Has anyone replaced their battery yet? I understand a battery for a Clevo W25AES should fit the gazelle but the model appears rare and isn't mentioned on compatibility lists for parts all that often.