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I’ve used an Antlion ModMic Wireless since I started my first job (where I regularly took calls 6+ hours a day). Over time, its runtime has dropped from a full day to about half, and Antlion doesn’t sell replacement batteries, so officially my only fix was a new mic. But it’s held together with just three screws, so swapping the battery is easy enough (took me 15 minutes).


The base of the mic is a two-part plastic body held together by three small screws, with nothing glued.

The opened plastic body, one half holding the circuit board with the old battery, the other half an empty shell with a foam pad, a pry tool alongside Close-up of the green Antlion board with the original silver JHY502030 250mAh pouch cell taped over it, red and black leads soldered near the cable's strain relief, micro-USB port below The board lifted out of the shell with the old cell flipped up, exposing the ANTLION-marked PCB, its micro-USB charging port, and the two soldered battery leads

The cell is a 502030 LiPo cell (3.7V, 250mAh, dated 2022.04.22), stuck with double-sided tape and soldered to two pads. That “502030” is the cell’s size (5 x 20 x 30mm), which is all you need to find a replacement. I ordered a replacement 502030 from Amazon ($8 after tax). Unfortunately there’s no space to choose a larger size.

The new LP502030 pouch cell, its white label reading 3.7V 250mAh 0.9Wh, with a two-pin JST connector on the end of its leads

Mine came with a JST plug, so I snipped it off (don’t cut the wires at the same time!). The old cell comes off by desoldering its two leads and working a piece of cardstock underneath to release the double-sided tape without damaging the old cell. The replacement goes in the same way - leads soldered to the same pads, and taped down in the same spot. Screw it together the same way it came apart.

The new cell soldered to the Antlion board out of its case, red and black leads joined to the pads beside the cable strain relief The new LP502030 battery seated inside the plastic body on top of the board, next to a roll of clear tape