WEN 20205 20V Max Lithium-Ion 5.0 Ah Rechargeable Replacement Battery
This battery is designed to fit the entire WEN 20V Max series, including model numbers 20107, 20135, 20121, 20314, 20401, 20405, 20409, 20418, 20437, 20630, 20625, 20653, 20661, 20667, 20670, 20691, 20861, 20944, 20496, 20200C, and 20201Q.