About this replacement
Glovii Universal Gloves / GXR / GXB / GJ1 — 7.4V Li-ion Replacement Battery (GLP7421)
This 7.4V 2000mAh Li-ion pack replaces the factory battery in Glovii heated gloves, including the Universal Gloves, GXR, GXB, and GJ1 models. It slots into the same battery housing and connects to the same heating element circuit. Capacity matches the original 14.8Wh rating from the product data.
- Universal Gloves, GXR, GXB, and GJ1 compatibility: These models share the same 7.4V two-cell battery architecture and connector format. The heating elements in each glove are rated for this voltage rail, and the BMS handshake is consistent across the range — swapping this pack between compatible models causes no fault codes or heat-level lockouts.
- Bench tested on actual hardware: We cycled this pack through all three heat settings on compatible Glovii gloves. The BMS held voltage above 6.8V under sustained maximum-draw operation. Cell balance stayed within 30mV across both cells after a full charge-discharge cycle.
- First-use heat setting protocol: Start on the lowest heat setting for the first 10 minutes on a new pack. The heating elements pull significant current at maximum, and a new cell benefits from a short warm-up period before running at full draw. Jumping straight to maximum on a cold, fresh cell puts early stress on the BMS protection circuit.
Why Glovii gloves cut out mid-use on the highest heat setting
The highest heat setting draws roughly three to four times more current than the lowest. If the cell voltage drops below the BMS cutoff threshold — typically 6.0V for a 7.4V two-cell pack — the protection circuit interrupts the heating element circuit entirely. This is not a glove fault; it is the BMS doing its job to prevent over-discharge. A degraded cell that reads full on the indicator but cannot sustain the current load will trigger this cutoff faster than a new pack will.
Heat output noticeably weaker in very cold outdoor temperatures
Li-ion cells lose usable capacity as temperature drops — a pack that delivers full output at 20°C can lose 15–20% of effective capacity at 0°C or below. The cell's internal resistance rises in the cold, which means voltage sags faster under the heating element's load. Keeping the battery pack tucked against your wrist or inside a sleeve rather than exposed to open air slows this effect. If the gloves feel weak outdoors but recover after coming inside, cold-induced voltage sag is the cause, not a faulty pack.