Excellent idea.
Very handy. Four stars because it is expensive.  I'd give it six for utility. Keeps the drawers tidy and enables keeping track of how many are where.  This would make a great promotion for a battery company. We have some for most all the sizes and I can't make sense of the pricing algorithms other than to say all are priced way more than intrinsic value would suggest. But as far as disposable income goes we have burned through a lot more elsewhere and gotten way less use.  When these get loss leadered or misprinted I will stock up big time.
Rating: 4 stars