Not a bad word to say about bricks or charger; mine have taken a hammering and performed almost flawlessly. I'll continue to use them with Scarlet & EPIC when I'm not going lightweight.
Only thing that ever went wrong was the breaking of the sprung bolt that holds the rotating base support for the charger in place. Metal fatigue or physical damage? Dunno. Field-stripped the charger to extract the loose bits (to avoid a possible internal short) - that was straightforward, problem solved.
The trick, which is well-known, is to swap batteries when they get down to 25% or so - they charge from there to full much faster than from empty to full.