Safescan LB-105 Compatible Battery 10.8V 700mAh Li-ion

Safescan 135i / 165i Series — 10.8V Li-ion Replacement Battery (LB-105)

This is a 10.8V, 700mAh Li-ion replacement battery for the Safescan 135i and compatible portable banknote detectors. It restores power to the UV, magnetic, and infrared detection circuits that the device relies on for currency verification. Fits the 135i, 145ix, 155i, and 165i among other models in the same series.

• 135i / 145ix / 155i / 165i compatibility: These models share the same 10.8V three-cell Li-ion configuration, identical connector pinout, and the same BMS handshake protocol — so one battery part number covers the full range without modification.
• Bench tested on actual hardware: We cycled this battery through the detection sequence — UV lamp trigger, magnetic head activation, and display draw — and confirmed the BMS held voltage within the expected window across all three loads simultaneously.
• First-use calibration on the 135i: Run the unit through at least one complete power-on and detection cycle before relying on the charge indicator. The 135i maps battery capacity during normal operation, and the charge gauge will read inaccurately until the device completes that first calibration pass.

Why the UV lamp causes a voltage dip on startup

The UV lamp in the 135i draws a short inrush current each time it fires. On a depleted or degraded cell, this spike can push the BMS into temporary overcurrent protection, cutting power to the detection head mid-scan. The LB-105's cell is rated to handle this inrush without tripping, but the protection circuit still needs a charged cell — starting a scan with the battery below 10.0V increases the risk of a mid-scan cutout. Charge fully before a heavy verification session.

Charge indicator stuck at 99% after fitting a new battery

This happens because the charge IC enters top-off mode on a new cell — it trickles current in and holds the displayed percentage just below 100% while it balances the cells. It is not a fault with the battery or the unit. The indicator will clear to 100% once the top-off phase completes, typically after the unit has been on charge undisturbed. No action is needed beyond leaving the device plugged in.