You want to expalain you situation a bit more in detail as to why it is not super quick for you to change a battery in the foregrip? How fast do you want to take the battery in and out? my suggestion... get a battery that do do not have to swap out in the field, e.g. a bigger one (but of course that requires a bigger box such as PEQ, Redi-mag, Full stock, busta's ego, Crane stock, etc...).