Bionet Compact 5 Compatible Battery 10.8V 3400mAh 10-5705

Bionet Compact 5 / Compact 7 / BM3 Series — 10.8V Li-ion Replacement Battery (10-5705)

This is a 10.8V Li-ion 3400mAh (36.72Wh) replacement battery for Bionet patient monitors including the Compact 5, Compact 7, BM3, and BM3 Vet. It fits the same battery bay and connector as the original Bionet 10-5705. Use it in clinical, hospital, and veterinary settings where the monitor operates on battery power during transport or bedside rounds.

• Compact 5, Compact 7, and BM3 platform fit: These models share the same 10.8V three-cell Li-ion architecture, battery connector pinout, and BMS handshake protocol. One battery pack covers the full range. Substituting a different voltage pack will trigger an immediate fault on the monitor's power management board.
• Bench tested on actual hardware: We cycled this battery through charge, discharge, and BMS communication verification on Compact 5 hardware. The protection circuit responded correctly to charge termination, over-discharge cutoff, and the monitor's periodic state-of-charge polling during runtime.
• Post-install self-test protocol: After installing this battery, allow the Bionet monitor to complete its full power-on self-test sequence without interruption. Medical-grade BMS firmware runs a verification handshake at startup — cutting power mid-sequence registers a battery fault that persists until the next clean reboot cycle.

Bionet monitor alarming low battery immediately after a confirmed full charge

The Bionet BMS compares cell voltage against thresholds calibrated to the OEM cell's charge curve. A new replacement cell hasn't completed a learn cycle, so the BMS can read state-of-charge conservatively on the first use. The alarm clears after one complete charge-discharge cycle, which lets the BMS map the actual capacity of the new cell. Run the monitor on battery until the low-battery warning appears naturally, then charge to full before clinical deployment.

Bionet monitor won't power on after the replacement battery sat in storage

Li-ion cells self-discharge over time. If the pack voltage drops below approximately 9V — the BMS recovery threshold for a 10.8V three-cell pack — the protection circuit latches off and the monitor will not respond to the power button. Connect the monitor to mains power first and leave it on charge for at least two hours before attempting to boot. The charger's pre-charge stage will bring individual cell voltages back above the BMS re-enable threshold, typically around 3.0V per cell.