Roche Accu-Chek Inform Compatible Battery 3.7V 1800mAh

Roche Accu-Chek Inform Blood Glucose Monitor — 3.7V Li-ion Replacement Battery (1UF103450P-RV)

This 3.7V, 1800mAh lithium-ion cell replaces the OEM battery in the Roche Accu-Chek Inform blood glucose monitoring device. It powers the meter's display, test strip reader, and onboard processor. Voltage and capacity match the original spec: 3.7V and 6.66Wh.

• Accu-Chek Inform platform fit: The Inform meter uses a fixed 3.7V single-cell architecture with a BMS that validates cell chemistry at startup. This cell matches that voltage rail and connector orientation, so the BMS handshake completes without a fault flag.
• Bench tested on actual hardware: We cycled this cell through the Inform's startup self-test sequence and monitored BMS response across charge and discharge. The protection circuit handled both the low-draw display load and the brief current spike during test strip analysis without tripping.
• Post-swap self-test handling: After installing this cell, let the device complete its full power-on self-test without interruption. The Inform runs a BMS verification pass at boot — cutting power mid-sequence logs a false battery fault that persists until the next clean reboot cycle.

Why the Accu-Chek Inform alarms low battery immediately after a confirmed full charge

The Inform's BMS uses a learned capacity model calibrated to the original OEM cell chemistry. A new replacement cell hasn't yet passed the meter's internal capacity verification threshold, so the alarm triggers even when the cell is fully charged. This isn't a fault with the cell — it's the BMS comparing measured impedance against a stored OEM baseline it hasn't updated yet. Run one complete charge-discharge cycle and the BMS recalibrates; the alarm clears on its own after that cycle completes.

Accu-Chek Inform not powering on after the cell sat in storage

Lithium-ion cells self-discharge during storage, and if the voltage drops below approximately 2.5V, the Inform's BMS enters a protection lockout and blocks startup entirely. The device will show no response — no display, no boot screen. Place the battery on a compatible external charger to bring the cell voltage above 3.0V before reinserting it into the meter. Once above that threshold, the BMS releases the lockout and the Inform boots normally.