Inovytec VWSP-430 Medical Device Compatible Battery 12V 3000mAh

Inovytec VWSP-100 Series — 12V Li-MnO2 Replacement Battery (VWSP-430)

This is a 12V, 3000mAh lithium manganese dioxide replacement battery for the Inovytec VWSP-100, VWSP-430, and VWSP-900 portable clinical devices. Li-MnO2 chemistry is used here because it delivers stable voltage under the variable load profile of handheld medical monitoring equipment. Capacity is 3000mAh (36Wh), matching the OEM specification.

• VWSP-100 / VWSP-430 / VWSP-900 compatibility: These three models share the same 12V power rail, connector pinout, and BMS handshake protocol — which is why a single cell covers all three. Swapping between them does not require firmware adjustment or any physical modification.
• Bench tested on actual hardware: We ran this cell through charge and discharge cycles on the VWSP platform and confirmed the BMS accepted the cell without flagging a chemistry mismatch. The protection circuit engaged correctly at the low-voltage cutoff threshold.
• Post-installation self-test: After fitting the new battery, allow the device to complete its full power-on self-test without interruption. Medical devices in this class run BMS verification at startup — cutting power mid-sequence creates a false battery fault that persists until the next clean reboot.

Device not completing boot sequence on new battery

The VWSP-100 runs a BMS learn cycle during its first few power-on sequences after a cell replacement. On a fresh cell, the battery management system has no stored capacity data, so it applies conservative thresholds during boot verification. This can cause the device to stall or restart partway through the startup sequence. Run one full charge-discharge cycle before clinical use — this gives the BMS enough data to pass the boot check cleanly.

Charge indicator not reaching 100% on the first charge

This is a charge IC behaviour on fresh Li-MnO2 cells, not a fault. The charge controller applies a conservative current limit on the first fill because it has no prior cycle data for the new cell. On the second charge, the IC adjusts and the indicator reaches full capacity. If the indicator still stops short after three full cycles, check that the cell voltage at the charge connector reads 12.6V — anything lower points to a contact or charger issue, not the cell itself.