Canon LB-1A Compatible Battery 11.1V 2450mAh Li-ion CXDI-70C

Canon CXDI-70C Series — 11.1V Li-ion Replacement Battery (LB-1A)

This is an 11.1V, 2450mAh (27.2Wh) Li-ion replacement battery for the Canon CXDI-70C and CXDI-70C DR portable digital radiography detectors. It also fits the CXDI-701C DR and CXDI-80C Wireless DR Detector, among over 30 compatible CXDI-series models. OEM part numbers it replaces: LB-1A, 1877A437, and 1877A255.

• CXDI-series platform fit: These detectors share a common 11.1V three-cell architecture and the same physical connector and BMS communication protocol. That shared platform is why a single battery covers multiple CXDI variants — the voltage rail and handshake are identical across the series.
• Bench tested on actual hardware: We ran this cell through full charge-discharge cycles on a CXDI-series detector and confirmed the BMS accepted the new cell, passed capacity verification, and did not flag a chemistry mismatch or trigger a fault state on the device display.
• Post-installation self-test cycle: After fitting this battery, let the detector complete its full power-on self-test without interruption. The CXDI platform runs a BMS verification sequence at startup. Cutting power during that sequence locks in a false battery fault that persists until the next clean reboot.

Why the CXDI detector alarms low battery immediately after a confirmed full charge

The CXDI's charge management IC applies a conservative capacity threshold when it first sees a new cell. On the first charge cycle, it does not yet have a learned profile for the cell's internal resistance curve, so the fuel gauge under-reports state of charge. The low battery alarm trips because the BMS is measuring voltage response under load, not true capacity. One full charge-discharge cycle gives the BMS enough data to recalibrate. After that cycle, the alarm clears and the gauge reads accurately.

CXDI detector will not power on after the replacement battery was stored before installation

Li-ion cells self-discharge during storage. If the cell voltage has dropped below approximately 9V before installation, the CXDI's BMS treats it as a deeply discharged or faulted pack and blocks the power-on sequence as a protection measure. Connect the detector to its AC adapter and leave it on charge without attempting to power on — the charge IC will trickle-charge the cell back above the recovery threshold. Once voltage climbs above 10.5V, normal charging resumes and the device will power on.