About this replacement
Chauvin Arnoux C.A 6116N / C.A 6117 — 10.8V Li-ion Replacement Battery (693942A00)
This 10.8V 5200mAh (56.16Wh) lithium-ion pack replaces OEM part 693942A00 in the Chauvin Arnoux C.A 6116N and C.A 6117 power quality analyzers. Both instruments run the same battery bay, connector pinout, and BMS communication protocol. Capacity figures come from the product data — not web estimates.
- C.A 6116N and C.A 6117 shared platform: Both analyzers use the same 10.8V three-cell series configuration and the same data lines between the pack and the instrument's power management board. One battery fits both because the BMS handshake, connector keying, and voltage thresholds are identical across that instrument generation.
- Bench tested on actual hardware: We cycled this pack through the C.A 6116N's sustained logging draw and the higher current spike that occurs when the clamp probe module initialises. The BMS handled both without nuisance cutoff, and cell balancing remained stable through five full discharge-charge cycles.
- Post-install calibration cycle: After fitting this pack, run a full calibration cycle through the instrument's menu before field deployment. The C.A 6116N maps battery state during that routine — skipping it causes the instrument to display premature low-battery warnings on the first measurement session, even with a fully charged pack.
BMS lockout after the C.A 6116N sat unused in a carry case for months
Lithium-ion packs left discharged for extended periods drop below the BMS recovery threshold — typically around 2.5V per cell for a 10.8V three-cell pack. When that happens, the protection circuit locks out charge current entirely, and the instrument shows nothing or a flashing error on connection. The fix is a slow pre-charge pulse from a compatible charger that forces the cells back above the recovery floor before normal charging resumes. Once cell voltage climbs above approximately 9V pack-total, the BMS re-enables the charge path and normal charging proceeds.
Readings resetting or dropping out mid-logging session
This is a voltage sag failure, not a calibration fault. When the analyzer sustains a heavy sensor load — simultaneous clamp input, display backlight, and active data logging — total current draw climbs enough to pull pack voltage below the instrument's brownout threshold, triggering a reset. A degraded or partially charged original pack fails this load; a fresh 5200mAh pack at full charge holds the voltage rail above that threshold. Before a long logging session, charge the pack fully and confirm the instrument's battery indicator reads 100% at startup.