American DJ WIFLY EXR HEX PAR Compatible Battery Z-WIB162 25.9V

American DJ WIFLY EXR HEX PAR — 25.9V Li-ion Replacement Battery (Z-WIB162)

This is a 25.9V, 10400mAh lithium-ion battery for the American DJ WIFLY EXR HEX PAR wireless LED par fixture. It replaces OEM part Z-WIB162 and restores full power to the fixture's RGB LED driver system. Capacity figure matches the product data — 269.36Wh total energy.

• WIFLY EXR HEX PAR platform fit: The HEX PAR draws from a 25.9V nominal pack because its six-colour LED driver rail requires a higher voltage headroom than standard single-cell or two-cell lighting packs. The Z-WIB162 form factor and connector match the fixture's battery bay directly — no adapter, no rewiring.
• Bench tested on actual hardware: We cycled this pack on the HEX PAR at full RGB output and confirmed the BMS held discharge cutoff cleanly without tripping the fixture's LED driver fault. Cell balance across the 7S configuration stayed within 30mV after three full cycles.
• Pre-event storage tip: If the fixture sits unused for more than two weeks between shows, store the battery at approximately 50% state of charge. Leaving a 10400mAh high-capacity Li-ion pack fully charged at warm venue temperatures accelerates capacity fade faster than usage cycles do.

Why the WIFLY EXR HEX PAR dims before the low-battery indicator triggers

The HEX PAR's LED driver operates in constant-current mode, which means it pulls more amps from the pack as cell voltage drops — trying to hold output steady. Once pack voltage sags below roughly 22V under load, the driver can no longer maintain full current, and the fixture steps down brightness before any battery indicator activates. This isn't a firmware fault. It's a physics limit: internal cell resistance rises with age or temperature, causing voltage sag under the high draw of six LED channels at maximum intensity. Replacing an aged pack with a fresh Z-WIB162 restores the full voltage headroom the driver needs.

Battery not accepted by the HEX PAR after sitting in storage

If the fixture refuses to power on after a stored battery is reinstalled, the pack has likely self-discharged below the BMS acceptance threshold — typically under 20V for a 25.9V 7S pack. At that voltage the BMS enters a locked state and blocks charge input as a cell protection measure. To recover it, use a charger with a "wake" or low-current pre-charge mode and apply a brief charge pulse at 0.1C — around 1A — until pack voltage climbs above 21V. Once the BMS sees voltage above the threshold, normal charging resumes.