Glovii GLI7426 Heated Sweatshirt Replacement Battery 7.4V

Glovii Heated Sweatshirt & Pant — 7.4V Li-ion Replacement Battery (GLI7426)

This 7.4V 2600mAh Li-ion battery is a direct replacement for the Glovii GLI7426 cell used in the Glovii Heated Sweatshirt and Heated Pant. It powers the integrated heating zones that run through the garment fabric. Voltage and connector match the original OEM unit.

• Heated Sweatshirt and Pant compatibility: Both garments share the GLI7426 battery because they run the same 7.4V heating element circuit and use an identical connector and BMS handshake. Swapping between the two garments with the same pack works without modification.
• Bench tested on actual hardware: We ran this cell through full charge-discharge cycles on a 7.4V heated garment test rig. The BMS responded correctly to sustained current draw across all heat settings, holding output voltage steady without tripping protection prematurely.
• Heat setting transition on first use: Start on the lowest heat setting for the first 10 minutes with a new battery. The heating elements pull significant current at maximum, and stepping up gradually lets the cell stabilise before handling full-power demand across all zones.

Heating element cutting out mid-use on maximum setting

The GLI7426 BMS has an overcurrent cutoff that activates when sustained current draw exceeds its threshold. On the highest heat setting, all heating zones run simultaneously, which pushes total draw close to that limit — especially as the cell ages or in cold ambient temperatures where internal resistance rises. A mid-use cutout is the BMS doing its job, not a faulty battery. Power the garment off for 30 seconds to reset the protection circuit, then restart on a lower heat setting.

Battery not reaching maximum heat level even when fully charged

If the garment won't sustain the highest heat level after charging, the cell voltage under load is likely dropping below the threshold the heating controller needs to activate full power across all zones. This happens when a degraded or deeply discharged battery can no longer hold voltage under the current draw of maximum heat. Check the charge indicator — if it reads full but the garment still won't reach high heat, measure resting voltage with a multimeter. A healthy 7.4V Li-ion cell should read between 8.2V and 8.4V at full charge.