About this replacement
Million ML700 / ML1100 — 14.8V Li-ion Replacement Battery (B0402101)
This 14.8V, 2400mAh lithium-ion battery replaces the OEM pack in the Million ML700 and ML1100 portable medical diagnostic instruments. It matches the original voltage rail, connector, and BMS communication protocol for both models. Capacity is 2400mAh (35.52Wh) — use the figures from this listing, not third-party sources.
- ML700 and ML1100 platform compatibility: Both models share the same 14.8V four-cell architecture, battery footprint, and BMS handshake protocol. A single replacement pack covers either unit without modification to connectors or firmware configuration.
- Bench tested on actual hardware: We cycled this cell through charge and discharge on the ML700 platform. The BMS completed its recognition handshake on the first connection and accepted a full charge without triggering a fault state. Cell voltage at full charge measured within the expected 16.8V ceiling.
- Post-installation self-test protocol: After fitting this battery, allow the ML700 or ML1100 to complete its power-on self-test without interruption. Medical-grade BMS firmware runs a verification sweep at startup — cutting power mid-sequence registers a false battery fault that can persist across reboots until the device completes a clean full cycle.
Device not completing boot sequence on a new battery
The ML700's BMS firmware validates cell chemistry and state-of-charge during the boot sequence before releasing power to the main board. A new cell that has partially self-discharged during shipping can fall below the threshold this check expects, causing the device to stall mid-boot or display a battery error. This is not a fault with the replacement pack. Charge the battery fully before first boot — confirm the charger reaches at least 16.6V output before connecting — then power on and allow the self-test to run without interruption.
Charge indicator not reaching 100% on the first charge cycle
The ML700's charge IC applies a conservative current limit when it encounters a cell with no prior charge history. This causes the indicator to plateau at 85–95% and stop climbing, even though charging is still active. The cell is not defective. Run one complete charge-discharge-charge cycle and the charge IC recalibrates its end-of-charge threshold to the actual cell capacity. After that cycle, the indicator will reach 100% consistently.