Zebra TC15 BTRY-TN2X-1XMA1-01 Replacement Battery 3.87V 5150mAh

Zebra TC15 / TN28 / U30 — 3.87V Li-ion Replacement Battery (BTRY-TN2X-1XMA1-01)

This 3.87V, 5150mAh (19.93Wh) Li-ion battery replaces the OEM pack in the Zebra TC15, TN28, and U30 rugged mobile computers. These handhelds are built for high-throughput warehouse, retail, and logistics environments where a dead battery mid-shift stops the whole line. Swap this pack in and you're back scanning without pulling the device out of rotation.

• TC15, TN28, and U30 compatibility: All three models share the same battery bay geometry, connector pinout, and BMS handshake protocol. The TC15 and TN28 run the same voltage rail at 3.87V nominal, so the same cell and protection circuit works across the platform without firmware conflicts.
• Bench tested on actual hardware: We ran this pack through charge and discharge cycles on the TC15 and confirmed the BMS communicates correctly with the device — charge status displayed accurately, and the protection circuit tripped as expected at both high-current inrush and low-voltage cutoff thresholds.
• First-shift charging protocol: After installing this pack, seat the scanner in its cradle for a full charge cycle before starting pick-and-pack work. Scan trigger inrush current spikes hardest when the cell is near minimum charge, and a fully charged cell prevents false BMS trips that can lock the device on the first shift.

Cradle showing a charging error on a new pack

Charging errors on a freshly installed battery are almost always a contact resistance issue, not a cell fault. The TC15 cradle uses gold-plated pogo pins that oxidise or collect debris in dusty warehouse environments. Even minor fouling raises contact resistance enough to trigger a charging fault. Wipe the contacts on both the battery pack and the cradle with a dry cloth, reseat the device firmly, and the error clears in most cases.

Scanner losing wireless connection during rapid scan bursts

During a fast scan burst, the imager and the Wi-Fi radio draw current simultaneously — combined inrush can pull the cell voltage below the threshold the radio needs to hold its connection. This shows up as the TC15 dropping off the network mid-session, not as a complete power loss. If it happens consistently, check that the cell is above 3.6V before starting a high-frequency scanning task. A full charge before a heavy shift eliminates most instances of this fault.