UPCAN R1 Cordless Vacuum Replacement Battery 14.4V 2600mAh

UPCAN R1 — 14.4V Li-ion 2600mAh Replacement Battery

This is a 14.4V Li-ion battery rated at 2600mAh (37.44Wh), built to replace the original pack in the UPCAN R1 cordless vacuum. It fits the R1 stick and handheld vacuum and restores suction power to a unit running on a depleted or failed original cell. Voltage and capacity match the original specification.

• R1 vacuum platform: The R1 motor controller draws from a fixed 14.4V rail. A cell outside that voltage window causes the controller to cut power before the battery indicator reaches low. This replacement holds the correct voltage window throughout its discharge curve.
• Bench tested on actual hardware: We cycled this battery under simulated vacuuming load — sustained draw with periodic high-current spikes to replicate carpet and upholstery transitions. The BMS held cutoff thresholds without nuisance trips across repeated cycles.
• Dock charging on the R1: Remove the R1 from the charging dock once the indicator shows full. The R1 dock does not cut trickle current automatically. Leaving it docked continuously accelerates capacity fade in the cells — charge when depleted, remove when full.

Suction dropping before the battery indicator reaches low on the R1

This is a voltage sag issue, not an indicator calibration problem. When the motor encounters resistance — a partially blocked filter or a dense carpet pile — current draw spikes. An aged or partially failed cell cannot sustain voltage under that spike, so the motor controller reduces power or cuts out even though the indicator still shows charge remaining. A fresh cell with healthy internal resistance holds voltage under the same load. If suction drops before the indicator hits low, check the filter first, then replace the cell if the filter is clear.

R1 motor cutting out mid-use then recovering after a few seconds

This is a BMS overcurrent trip. When restricted airflow — blocked filter or clogged brush roll — forces the motor to draw sustained high current, the BMS trips to protect the cells and cuts power. The pack recovers once the BMS resets, which takes a few seconds. The fix is not a new battery — clean or replace the filter first. If the cutout stops after clearing the filter, the BMS on the replacement pack is functioning correctly. If cutout continues on a clean filter, pull the pack voltage with a meter: below 12.5V under load points to a cell issue.