KOAMTAC KDC-BAT100 Replacement Battery 3.7V 190mAh

KOAMTAC KDC-100 / KDC-200 Series — 3.7V Li-Polymer Replacement Battery (KDC-BAT100)

This is a 3.7V, 190mAh lithium-polymer replacement battery for the KOAMTAC KDC-100 and KDC-200 series barcode scanners. It fits the compact sled-style form factor these models use for mobile inventory, asset tracking, and point-of-sale scanning. OEM part references KDC-BAT100 and 02-980-8680 both apply to this pack.

• KDC-100 and KDC-200 series fit: These models share the same 3.7V Li-Polymer cell cavity, connector pinout, and BMS handshake protocol, which is why a single pack covers the KDC-100, KDC-200, KDC200, and KDC200iM variants.
• Bench tested on actual hardware: We cycled this pack through repeated scan-trigger bursts and wireless polling sequences. The BMS held stable under the combined inrush load and tripped correctly at the low-voltage threshold without false cutoff.
• First-shift cradle protocol: After installing, seat the scanner in its charging cradle for a full charge cycle before pulling the scan trigger. The trigger inrush current peaks when the cell is near minimum — a fully charged pack prevents a false BMS trip at the start of a pick-and-pack shift.

Cradle showing charging error on a new KDC-BAT100 pack

The KDC cradle reads the pack through spring-loaded dock contacts. If those contacts carry oxidation or residue from the old cell, the dock sees elevated resistance and flags a charging fault even though the new pack is fine. Wipe the gold contacts on both the battery and the cradle dock with a dry lint-free cloth, then reseat the scanner firmly. The charge indicator should switch to solid within a few seconds of a clean connection.

Scanner losing wireless connection during a rapid scan burst

The KDC-200 series runs both the imager and a Bluetooth radio from the same 3.7V cell. During a rapid scan burst, the combined current draw from the imager firing and the radio transmitting simultaneously can pull cell voltage below the BMS protection threshold momentarily. This causes the radio stack to drop and re-initialise, which the host device reads as a disconnection. Slowing the scan rate slightly during high-volume sessions keeps instantaneous current demand within the cell's delivery window and prevents the drop.