Update: replacement USB port is being posted, no dramas. I wanted the replacement because the USB port is one of the best quality ones I have seen (only the metal ones look better). I was surprised something so well made even broke. DRIFTA have good after sales service, now added to review.DRIFTA BB UPDATE
When the DRIFTA Battery Box is charging at 25 amps, it heats up and lifts the sticker on the battery box lid on the charger end. I will probably use Marine Goop to keep it in place, otherwise it has been an excellent Battery Box (so far).
One of the USB charging ports also failed, I think the internal wiring is faulty (USB unit is sealed). That is a little surprising as the USB port is one of the best quality ones I have seen, it is high quality. I have spares so I just changed it out.