Nippon DS22L1-D Compatible Battery 3.7V 1800mAh

Nippon DS22L1-D / BHT-200 Series — 3.7V Li-ion Replacement Battery

This 3.7V 1800mAh Li-ion cell replaces the factory battery in Nippon DS22L1-D, DS22L1-G, BHT-200, and BHT-300 handheld barcode scanners. It slots directly into the battery bay with the same physical footprint — 55 x 35 x 11mm — and the same voltage rail the scanner's BMS expects. Capacity is rated at 6.66Wh.

• DS22L1 and BHT-200/300 platform: These models share a common 3.7V single-cell architecture with the same connector layout and BMS handshake protocol. One cell covers the full range without modification.
• Bench tested on actual hardware: We cycled this pack through scan-trigger and wireless polling loads simultaneously. The BMS handled combined inrush without tripping, and voltage held above the scanner's minimum read threshold throughout the discharge curve.
• First-shift charging tip: After installing, place the scanner in its cradle for a full charge cycle before use. Scan trigger inrush is highest when the cell is near minimum, and a pre-charged cell prevents false BMS trips during the first pick-and-pack shift.

Cradle showing a charging error after fitting a new pack

Charging docks on the BHT-200 and DS22L1 series are sensitive to contact resistance at the battery terminals. Even minor oxidation or debris on the gold contacts can push resistance high enough for the dock to flag a fault and halt charging. The dock isn't detecting a faulty cell — it's detecting a broken circuit. Wipe the battery contacts and dock pins with a dry cloth, reseat the pack firmly, and the error clears on the next dock handshake.

Scanner drops wireless connection during a rapid scan burst

The BHT-200 and DS22L1 scanners draw from the same cell for both the scan engine and the wireless radio simultaneously. During a fast scan burst, the combined inrush pulls the cell voltage down sharply. If the cell is already depleted or degraded, voltage sags below the radio's minimum operating threshold and the wireless stack drops. The fix is to return the scanner to the cradle before the indicator LED turns red — at roughly 3.4V the radio becomes unstable before the scanner itself shuts off.