Not for what you are looking for, but I’ll tell you did with my two spare batteries for just that purpose as well. I found a very cheap plastic case with foam pluck interior for $20 from Amazon to store both of my extra batteries, both external chargers, and a quart-sized zip-lock bag full of extra charging cables specific to both of my SDS 100s and SDS 200s. The pluck foam recesses the batteries and chargers flush and the bag lays nicely on top and is not too thick that it don’t sandwich between the foam and the case closes perfectly.