Denso BHT-200 Replacement Battery 3.7V 1800mAh Li-ion

Denso BHT-200 / BHT-300 / BHT-400 Series — 3.7V Li-ion Replacement Battery (496461-0450)

This 3.7V 1800mAh Li-ion battery replaces OEM part numbers 496461-0450, BT-20L, BT-20LB, 496466-1130, and FBD2000. It fits the Denso BHT-200, BHT-300, BHT-400, BHT-200BW-CE, and over 33 additional BHT-series terminals used in warehouse, retail, and inventory environments. Dimensions are 55 x 35 x 11mm — match these before fitting.

• BHT-200 / 300 / 400 platform compatibility: These terminals share the same battery bay geometry, 3.7V supply rail, and BMS handshake protocol across the series. One cell revision covers the entire BHT family without modification to contacts or firmware.
• Bench tested on actual hardware: We ran this pack through charge and discharge cycles on BHT-series hardware. The BMS accepted full charge without fault flags, and the protection circuit responded correctly to simulated over-discharge events — cutting off cleanly at the low-voltage threshold.
• First-shift preparation for pick-and-pack use: Place the scanner in its cradle for a complete charge cycle before the first scan shift. The scan trigger inrush current peaks when the cell is near minimum. A fully charged pack prevents false BMS trips during high-frequency scanning at shift start.

Cradle showing a charging error on a new pack

Denso BHT cradles read pack status through the battery contacts before initiating charge. If contact resistance is too high — from oxidation, dust, or slight misalignment — the cradle throws a charge error even on a good cell. Wipe the gold contacts on both the pack and the cradle slot with a dry lint-free cloth, then reseat the terminal firmly until it clicks. If the error clears, the cell was fine and the contacts were the fault.

Scanner losing wireless connection during rapid scan bursts

During a rapid scan burst, the BHT-200 draws simultaneously from the laser or imager and the wireless radio. That combined inrush can momentarily drag cell voltage below the BMS low-voltage threshold, causing the radio to drop its connection. This is more common when the pack is below 30% charge. Keep the pack above half charge during high-throughput shifts, and watch for this behaviour as an early sign that cell capacity is fading.