Gude GPS 7.2V Replacement Battery 7.4V 2200mAh Li-ion

Gude GPS 7.2V — 7.4V Li-ion Replacement Battery

This 7.4V Li-ion battery replaces the original pack in the Gude GPS 7.2V cordless tool series. Capacity is 2200mAh (16.28Wh). It fits the GPS 7.2V platform and restores full tool operation when the original pack no longer holds a charge.

• GPS 7.2V platform fit: The GPS 7.2V series runs a 7.4V nominal Li-ion rail. This pack matches that voltage, the physical cell housing dimensions (65.53 × 36.48 × 18.15mm), and the connector orientation required for proper BMS communication between the pack and charger.
• Bench tested on actual hardware: We cycled this pack through repeated trigger-pull inrush loads on a GPS 7.2V drill. The BMS handled the motor-start current spike without tripping overcurrent cutoff, and voltage recovered cleanly between bursts.
• Break-in load protocol: On first use, run the drill at half throttle for two full discharge-recharge cycles before applying maximum torque. This allows the BMS to profile the motor's inrush current draw and calibrate its overcurrent threshold before high-demand fastening work.

BMS cutoff on GPS 7.2V motor-start inrush surge

At trigger pull, the GPS 7.2V motor draws a brief inrush spike well above its steady-state running current. If the BMS reads that spike as an overcurrent fault — particularly on a pack that has been in storage — it will cut the output rail to protect the cells. A depleted or partially charged pack has higher internal resistance, which amplifies the voltage sag during inrush and makes a false overcurrent trip more likely. Charge the pack fully to 8.4V before first use and avoid trigger-jamming from standstill on a cold pack.

Charger not recognising the GPS 7.2V pack after extended storage

Li-ion cells self-discharge slowly in storage. If the pack drops below approximately 2.5V per cell, most chargers will refuse to begin a charge cycle — the acceptance voltage threshold is a protection against charging a deeply discharged or damaged cell. This shows as a blinking red indicator or no response at all on the Gude charger. Some chargers have a recovery or "boost" mode; if yours does not, a brief trickle from a compatible Li-ion charger set to recovery mode can bring the pack back above the acceptance threshold. Target at least 3.0V per cell before switching to normal charge.