The build quality is good, I do not see any points that I could complain about.
The box is handy for storage, just because I only need a battery and needs to support the Second.
The durability is class, I have my flashlight nearly used almost a month every day, until I realized at some point that the level was slightly paler. In addition, you should never discharged Li-Ion completely. For storing a charge of 50-70% is recommended.
I can highly recommend the batteries so, just the price makes the whole as a whole at an unbeatable product!
