About this replacement
American DJ WiFLY Par QA5 — 22.2V Li-ion Replacement Battery (Z-WIB225)
This is a 22.2V, 7800mAh (173.16Wh) lithium-ion battery for the American DJ WiFLY Par QA5 wireless LED par fixture. It fits the QA5 directly and replaces OEM part numbers Z-WIB225 and 060225. If your fixture is dimming early, stepping down output unexpectedly, or refusing to power on after storage, this cell pack addresses those failure points.
- WiFLY Par QA5 fit: The QA5 uses a 22.2V (6S) cell configuration to feed its onboard LED driver and wireless DMX receiver simultaneously. Both loads draw from the same pack, so the BMS must handle combined current without tripping on startup spikes from the wireless module initialising alongside the LED array.
- Bench tested on actual hardware: We ran this pack through full charge-discharge cycles on the QA5 platform. The BMS held within the fixture's acceptance thresholds at initialisation, and the cell voltage stayed stable under constant-current LED driver load without sagging into premature low-battery cutoff.
- Storage charge for QA5 batteries: Store this pack at approximately 50% charge if the fixture will sit unused for more than two weeks. Parking a 7800mAh high-capacity Li-ion cell at full charge in a warm flight case accelerates capacity fade faster than regular cycling does.
Why the WiFLY Par QA5 dims before the battery indicator hits low
The QA5's LED driver operates in constant-current mode, which means it pulls more voltage as the cells begin to sag under load. Older or degraded cells can't hold the 22.2V rail steady at high output, so the driver steps the fixture down before the battery indicator registers a low reading. The indicator reads resting cell voltage, not load voltage — those two figures diverge as a pack ages. A fresh cell pack with healthy internal resistance closes that gap and restores full output for the expected duration of a set or shoot.
Battery not accepted by the QA5 after sitting in storage
If the QA5 refuses to power on after a pack has been in storage, the individual cell voltage has likely dropped below the fixture's BMS acceptance threshold — typically around 2.5V per cell on a 6S pack. The fixture's protection circuit reads the pack as faulty rather than flat and blocks charging. To recover it, use a Li-ion charger with a recovery or trickle mode to bring each cell above the 3.0V floor, then reconnect to the QA5. If cells won't hold above 3.0V after a recovery attempt, the pack needs replacement rather than further cycling.