Televes H30FLEX 7.4V 2600mAh Li-ion Replacement Battery

Televes H30FLEX — 7.4V Li-ion Replacement Battery (E-1982)

This is a 7.4V 2600mAh Li-ion replacement battery for the Televes H30FLEX signal level meter. It fits the H30FLEX portable test instrument used by technicians to measure TV and broadband signal quality in the field. Capacity is rated at 2600mAh (19.24Wh), matching the OEM specification.

• H30FLEX platform fit: The H30FLEX uses a single-cell-equivalent 7.4V Li-ion pack with a specific connector and BMS communication handshake. This replacement matches that voltage rail and connector pinout so the instrument's power management circuit accepts the pack without throwing a battery fault code.
• Bench tested on actual hardware: We cycled this pack through the H30FLEX's power-on sequence and active measurement load. The BMS handled the probe initialisation current spike without tripping, and the instrument's charge indicator tracked correctly across the full discharge curve.
• Post-install calibration step: After fitting this battery, run a full calibration cycle through the H30FLEX instrument menu before deploying to site. The meter maps battery state during that sequence — skipping it causes premature low-battery warnings to fire on the first real measurement session.

BMS lockout after the H30FLEX sat unused in a carry case for months

Li-ion cells self-discharge during storage. If the H30FLEX sits unused long enough, the pack voltage drops below the BMS's minimum recovery threshold — typically around 2.5V per cell. At that point the BMS enters a protective lockout state and blocks both charge and discharge. The instrument will not power on and the charger shows no activity. To recover, apply a compatible charger that supports a trickle or pre-charge mode and hold it on the pack for 15–30 minutes until cell voltage climbs above 3.0V per cell, at which point the BMS re-enables normal charging.

H30FLEX display showing an inconsistent battery percentage at every reboot

This is a voltage-threshold recalibration issue, not a fault with the replacement pack. The H30FLEX's battery indicator is referenced against voltage thresholds tuned to the original cells — a new pack with slightly different internal resistance reads the same open-circuit voltage but behaves differently under load. The percentage shown at startup is estimated from resting voltage alone, so it can jump 10–20% once the instrument starts drawing current. Run two or three full charge-discharge cycles through normal field use and the meter's percentage will stabilise against the new pack's actual discharge profile.