Aputure AMARAN AL-528C Replacement Battery 7.4V 2600mAh

Aputure AMARAN AL-528C / AL-528S / AL-528W / AL-F7 — 7.4V Li-ion Replacement Battery

This 7.4V 2600mAh (19.24Wh) Li-ion battery fits the Aputure AMARAN AL-528C, AL-528S, AL-528W, and AL-F7 CRI 95+ LED light panels. These are continuous on-camera and on-rig lighting panels used in video production and photography. The battery slots directly into the panel's battery compartment and powers the LED array at the same voltage rail as the original cell.

• AL-528 and AL-F7 series compatibility: These panels share the same 7.4V battery format and connector pinout across the 528C, 528S, 528W, and AL-F7 CRI 95+ variants. The LED driver circuit in each model draws from the same voltage rail, so one battery type covers the full range.
• Bench tested on actual hardware: We ran this cell through charge and discharge cycles on the AL-528 platform. The BMS held the correct cutoff voltage at the low end and accepted a full charge without tripping protection. LED output remained stable across the discharge curve with no flicker or shutdown at normal operating draw.
• First-use charge cycle for the AL-528 panels: Before your first shoot, run one complete charge cycle in the panel's OEM charger. The AL-528 series reads battery state through voltage sampling — a fresh cell not yet fully cycled can cause the indicator to read lower than actual charge level until the first full cycle completes.

AL-528C LED output dimming before the battery indicator hits zero

The AL-528C does not regulate LED brightness independently of supply voltage at the low end of the discharge curve. As cell voltage drops below approximately 7.0V, the LED driver gets less headroom and output visibly drops before the panel shuts off. This is a voltage-sag issue, not a defective cell. If you need consistent output for a colour-critical shot, swap the battery when the indicator hits the last bar rather than waiting for shutdown.

Battery percentage reading erratically on the AL-528 indicator

The AL-528 series uses a voltage-threshold method to estimate remaining charge — it maps discrete voltage levels to percentage bars rather than tracking coulombs. A replacement cell with a slightly different discharge curve can cause the indicator to jump between bars or stall at one level for a long period before dropping suddenly. This is normal during the first one to two charge cycles as the panel calibrates to the new cell's curve. Run two full charge and discharge cycles and the indicator should settle. If jumping continues past that point, check that the cell is seated fully and the contacts are clean — target a resting voltage of 8.4V after a full charge.