No spare carriers at this point in time. I'm not sure if they'll offer it except for warranty use. Do be careful when loading these lights. Remember they
are only 1.5v each - lots of room for stuff to go wrong.
1) If you're using alkalines, ALWAYS use NEW cells from the SAME pack
and the SAME brand. Do not mix between brands, or even cells with different
remaining power. When the first cell depletes, immediately the continued use
will cause that cell to begin to be CHARGED BACKWARDS.
2) If you're using NiMH, use the SAME rating, SAME brand, same batch (purchased at the same time) and don't use those cells for other things. Keep them together for the life of the cells with the flashlight.
Discharge and charge them together. Never mix different brands even if they have the same capacity. Never put cells with different charge states. You want to keep all the cells in the same condition all the time. Same thing happens when you nearly deplete the pack - the first cell that runs out (to 0v) first will damage the cell going below 0.7v or thereabouts and when it hits 0v, it immediately begins to REVERSE CHARGE. Just a friendly warning.