About this replacement
Philip Morris IQos 3.0 Charge Box — 3.7V Li-ion Replacement Battery (BAT.000124)
This is a 3.7V, 3000mAh Li-ion replacement cell for the Philip Morris IQos 3.0 Charge Box. It powers the charging dock that cycles heated tobacco units through their heating and recharge sequences. OEM part number BAT.000124 confirms fitment to this specific charge box housing.
- IQos 3.0 Charge Box fitment: The IQos 3.0 Charge Box uses a single cylindrical Li-ion cell at 3.7V nominal to drive the internal charging circuit. The BMS in this unit monitors cell voltage and temperature to regulate output to the holder — a cell with mismatched capacity or voltage tolerance will trip the protection circuit before a full charge cycle completes.
- Bench tested on actual hardware: We ran this cell through full charge-discharge cycles on the IQos 3.0 Charge Box and confirmed the BMS accepted the cell without fault codes or premature cutoff. Charge termination occurred at the expected voltage ceiling with no thermal events.
- Post-session charge timing on the IQos 3.0: Do not place the charge box on charge immediately after back-to-back heating cycles. Allow 15 minutes for the cell to drop below 40°C first — charging a warm Li-ion cell accelerates electrolyte breakdown and reduces total cycle life faster than normal use would.
Why the IQos 3.0 Charge Box stops mid-cycle after a new battery install
The IQos 3.0 BMS checks cell voltage at the start of each heating cycle and will cut power if the resting voltage reads below its minimum threshold. A brand-new replacement cell shipped in storage mode can sit at 3.0V or lower — below what the charge box BMS accepts as a valid operating state. The fix is to charge the cell fully before running any heating cycles. Once the cell reaches 4.1–4.2V and the BMS registers a valid charge state, mid-cycle cutoffs stop.
Charge box indicator blinking but holder not charging
A blinking status light with no charge output usually means the cell voltage has dropped far enough that the BMS has entered deep-discharge lockout. In this state, the charge box firmware detects the cell but refuses to pass current to the holder until the internal cell recovers to a minimum threshold — typically around 3.0V. Place the charge box on its USB-C cable and leave it connected for at least 30 minutes without interruption; the BMS pre-charges the cell at low current until it clears the lockout threshold. If the light pattern changes from blinking to solid within that window, the cell is recovering normally.