American DJ Z-WIF022 Replacement Battery 18.5V 10400mAh

American DJ WIFLY EXR DOTZ PAR — 18.5V Li-ion Replacement Battery (Z-WIF022)

This 18.5V 10400mAh (192.4Wh) Li-ion battery replaces the Z-WIF022 pack in the American DJ WIFLY EXR DOTZ PAR wireless LED PAR fixture. It fits the original battery bay and connects to the fixture's internal LED driver without modification. Use it when AC power is unavailable or impractical during live performances and venue installations.

• WIFLY EXR DOTZ PAR platform fit: The DOTZ PAR's LED driver runs a constant-current rail at 18.5V. The cell configuration and connector pinout on this pack match that rail exactly, so the driver draws cleanly from full charge through to the low-battery cutoff threshold.
• Bench tested on actual hardware: We ran this pack on the WIFLY EXR DOTZ PAR at full output and confirmed the BMS holds voltage steadily through high-draw LED cycles. The protection circuit trips at the correct low-cell threshold rather than cutting mid-show at partial discharge.
• Storage charge for event inventory: If this fixture sits unused between events for more than two weeks, store the battery at roughly 50% charge. The high-capacity Li-ion cells in this pack degrade faster when held at 100% charge in a warm gear bag or road case.

Why the DOTZ PAR dims before the battery indicator reaches low

The WIFLY EXR DOTZ PAR's LED driver operates in constant-current mode, which means it pulls harder from the battery as cell voltage drops. Under a full-output load, voltage sag across the cell pack can push the driver below its regulation threshold well before the battery status indicator shows low. This is a cell-load interaction, not a faulty pack. Running the fixture at 70–80% output intensity significantly reduces instantaneous current draw and keeps the voltage rail stable longer across the discharge curve.

Battery not accepted by the DOTZ PAR after extended storage

After extended storage, individual cells can drop below the fixture's BMS acceptance threshold — typically around 2.5V per cell in a 5S Li-ion configuration like this 18.5V pack. When the fixture sees a pack below that floor, it refuses to power on as a protection measure. Connect the battery to a Li-ion charger that supports a recovery or pre-charge mode, which trickle-charges depleted cells back above the acceptance voltage. Once the pack reads at or above 15V resting, reinsert it and the fixture should recognise it normally.