put. charge pet on your should IEbulbdog,featherlight,glowtail,glowhorn. and press e on the bug your pet will take up to 500 of the bugs charge a charge batery in your inventory works also.
its also a good early game chitin and meat.
If you want a charging station for batteries, you either find one or put a battery into these guys. Try to trap a bunch of them in a enclosure and you will have a charging station next to your base. A substitute choice, just make a base next to a charging station