ACTIVEON LX Replacement Battery 3.7V 1300mAh AA01A

ACTIVEON LX / DX Series — 3.7V Li-ion Replacement Battery (AA01A)

This is a 3.7V, 1300mAh Li-ion cell that replaces the original AA01A battery in ACTIVEON action cameras. It fits the LX, DX, LKA10W-B, and DKA10W-B models. Capacity figure is taken directly from the product specification — 4.81Wh.

• LX and DX platform compatibility: The LX and DX share the same battery bay dimensions and connector orientation. Both run on the same 3.7V rail with identical BMS handshake requirements, which is why a single cell — AA01A — covers the entire lineup.
• Bench tested on actual hardware: We ran this cell through charge and discharge cycles on ACTIVEON hardware. The BMS accepted the cell without error flags, voltage held steady across the discharge curve, and the protection circuit tripped correctly at the low-voltage cutoff threshold.
• First charge cycle on the LX: Before heavy shooting, run one full charge cycle through the camera body or OEM charger. The ACTIVEON BMS maps its battery-remaining display against the discharge curve during that first cycle — skipping it can cause the indicator to read inaccurately across the battery's full range.

Battery percentage jumping erratically on the LX display

The LX maps its fuel gauge to voltage thresholds calibrated during the BMS initialisation cycle. A new cell has a slightly different discharge curve than a worn original, so the camera's indicator can jump — dropping 20% in seconds, then holding flat. This is a gauge calibration issue, not a faulty cell. Fix it by running one full discharge from 100% to automatic shutdown, then charging uninterrupted back to full — the BMS resets its threshold map at 4.2V on completion.

ACTIVEON LX showing dead battery indicator on a charged replacement cell

Some ACTIVEON bodies flag a new cell as depleted on first install because the BMS reads resting voltage before the cell has equilibrated after shipping. A cell stored for weeks can sit at 3.6–3.7V — technically charged, but below the camera's "good battery" threshold check at power-on. Remove the battery, wait 10 seconds, and reinsert. If the error persists, place the cell in the OEM charger until the charge light cycles green, then reinsert into the camera body.