HP Sprocket 100 Replacement Battery 7.4V 500mAh

HP Sprocket 100 — 7.4V Li-Polymer Replacement Battery (P0562-LF)

This 7.4V 500mAh Li-Polymer battery replaces the internal cell in the HP Sprocket 100 portable photo printer. It fits the 2FR87A, 1AS90A, and 2FR86A model variants, along with 19 additional Sprocket configurations. Voltage and connector match the original P0562-LF specification exactly.

• Sprocket 100 series compatibility: These models share an identical battery bay, connector pinout, and BMS handshake protocol. The 7.4V rail powers both the paper feed motor and print head heating element from a single cell pack, so voltage tolerance across variants is tight.
• Bench tested on actual hardware: We cycled this battery through full print jobs on a Sprocket 100 unit. The BMS held stable through the motor-start surge on paper feed and maintained consistent voltage delivery to the print head across multiple consecutive prints.
• First-use charge requirement: Charge this battery to 100% before running your first print job. The paper feed motor and print head heating cycle together draw peak current at the same moment. A partially charged cell can trip the BMS on the very first print, leaving the printer unresponsive until the battery is reset.

Why the Sprocket 100 stops mid-print on a new battery

The Sprocket 100 drives the paper feed motor and the ZINK print head simultaneously during each print cycle. This creates a combined current draw that briefly spikes above the BMS protection threshold if the cell voltage is below roughly 7.0V. The BMS interprets this spike as an overcurrent event and cuts output to protect the cell. Charge fully to 7.4V before the first print to prevent the BMS from tripping on that initial motor-start surge.

Print fading toward the bottom of the photo

Fading in the lower half of a print is a voltage sag symptom, not a paper or app issue. As the print progresses, sustained current draw to the ZINK print head causes cell voltage to drop, reducing the heat applied to the thermal dye layers. Less heat means weaker colour activation in the final print rows. If fading persists on a fully charged battery, check that the battery contacts are clean and seated flush — even a 0.1V drop at the connector is enough to affect print head temperature.