About this replacement
Ideal SecuriTEST IP — 7.4V Li-Polymer Replacement Battery (R171052)
This 7.4V 4800mAh Li-Polymer pack is a direct replacement for the Ideal SecuriTEST IP portable safety and installation tester. It fits the SecuriTEST IP specifically — confirm your OEM part number is R171052 before ordering. Capacity is 4800mAh (35.52Wh), matching the original cell specification.
- SecuriTEST IP platform fit: The SecuriTEST IP draws from a single Li-Polymer cell stack at 7.4V nominal. The BMS in this pack is matched to that voltage rail and the instrument's charge termination signal — the tester will not accept a pack whose BMS handshake falls outside its expected charge profile.
- Bench tested on actual hardware: We cycled this pack through the SecuriTEST IP's probe initialisation sequence and sustained insulation resistance measurement loads. The BMS held within regulation across the full discharge curve without tripping at probe power-up.
- Calibration cycle before field deployment: After installing this pack, run a full calibration cycle through the SecuriTEST IP instrument menu before taking it to site. The instrument maps battery state during calibration — skipping this step causes premature low-battery warnings during your first measurement session, even with a fully charged pack.
BMS lockout after the SecuriTEST IP sat unused in a carry case for months
Li-Polymer packs left in storage self-discharge slowly. If the cell voltage drops below roughly 2.5V per cell — around 5.0V total on a 7.4V nominal pack — the BMS enters a protective sleep state and the instrument will not recognise the battery at all. The tester may show no sign of life or display a battery fault even when connected to a charger. To recover, connect the pack to a Li-ion compatible charger capable of applying a low-current pre-charge (trickle) below the BMS wake threshold, hold for 15–30 minutes, then reconnect to the SecuriTEST IP charger. If cell voltage has not dropped below 2.0V per cell, recovery is typically successful.
Readings resetting or logging dropping out mid-session on the SecuriTEST IP
This is not a firmware issue — it is a voltage dropout under sustained sensor load. During long insulation resistance or continuity logging sessions, current draw is continuous and higher than during standby, which pulls the terminal voltage down faster than the battery indicator anticipates. If the cell voltage sags below the instrument's cutoff threshold momentarily, the SecuriTEST IP resets the active measurement session to protect its internal logging circuit. A degraded original pack will show this symptom first at high test voltages (500V or 1000V IR ranges). Replace the pack and verify terminal voltage sits above 7.2V under load before starting a logging session.