About this replacement
Solaris NT2A — 11.1V Li-ion Replacement Battery (LR18650P-1P3S)
This is an 11.1V, 2600mAh (28.86Wh) lithium-ion battery for the Solaris NT2A portable medical device. It replaces the OEM pack directly, matching the voltage rail and connector configuration of the original. When the factory cell degrades or fails, this pack restores the device to normal operating status.
- NT2A platform fit: The NT2A runs an 11.1V three-cell lithium-ion architecture. This pack uses the same 1P3S cell arrangement as the OEM unit, so the BMS handshake and charge termination signals align without modification or adapter.
- Bench tested on actual hardware: We cycled this pack through charge and discharge on the NT2A platform. The BMS accepted charge normally, cell balancing completed without fault flags, and the protection circuit tripped correctly at low-voltage cutoff.
- Post-swap self-test protocol: After installing this battery, allow the NT2A to complete its full power-on self-test cycle without interruption. Medical device firmware runs a BMS verification pass at startup — cutting power during this sequence logs a battery fault that persists until the next clean reboot, even if the pack itself is fine.
NT2A not completing boot sequence after battery swap
The NT2A firmware runs a multi-stage initialisation check that includes a BMS handshake before the device reaches its ready state. A new cell at partial state of charge may present a voltage slightly outside the firmware's expected startup window, causing the boot sequence to stall or loop. Charge the replacement pack fully before the first installation. If the device still stalls at boot, remove the battery, wait 30 seconds, reinsert, and allow the full sequence to complete — the BMS re-initialises on each insertion.
Charge indicator not reaching 100% on first charge
On the first charge cycle, the NT2A charge IC applies a conservative current limit to an unfamiliar cell, which can leave the indicator sitting at 95–98% even after the charger has been connected for several hours. This is the charge controller applying a trickle-top algorithm while it profiles the new pack — it is not a faulty cell. Run one complete charge-discharge cycle and the charge IC recalibrates its endpoint. After that cycle, the indicator should reach 100% and terminate normally.