Yofidra High Capacity 18V 21V Lithium Ion Battery Replacement Professional Tools

Designed for demanding job sites, the Yofidra 18V–21V lithium-ion battery offers extended runtime and consistent power for your professional power tools. Ideal for tradespeople, electricians, drywallers, carpenters, and maintenance teams, it effectively replaces worn-out batteries and ensures uninterrupted work. Its high-performance Li-ion chemistry delivers stable performance, even under heavy use, with several capacities to choose from to suit your work pace.

Main features

• 18V–21V power : stable voltage for crisp starts and sustained torque on drills, screwdrivers and grinders.
• Battery capacity options : 7.5 Ah / 15 Ah / 22.5 Ah to suit your day according to the application.
• High-density lithium-ion : no memory effect, fast charging, optimized weight to limit fatigue.
• Electronic management : protection against overload, overvoltage and overheating to preserve cells and tool.
• Construction site endurance : robust components, shock and abrasion resistant housing.
• Energy indicator : precise monitoring of the remaining level to plan your cycles (depending on version).
• CE certification : compliance with safety and performance standards.

Compatibility & materials

Compatible with most 18V to 21V power tool platforms that accept standard replacement batteries. Suitable for common applications: drilling, screwdriving, cutting, sanding, grinding, and 18V garden tools. High-quality lithium-ion cells, integrated protection electronics (BMS), reinforced connectors for optimal conductivity. Impact-resistant technical ABS/PC housing.

Technical table

• Brand : Yofidra
• Nominal voltage : 18V–21V
• Available capacities : 7,500 mAh / 15,000 mAh / 22,500 mAh
• Technology : Lithium-ion
• Certification : CE
• Origin : CN

Why the pros love it

• Immediate increase in autonomy, fewer stops to change batteries.
• Consistent power under load, faster cutting and drilling.
• Wide compatibility with existing 18V–21V platforms.
• Electronic protection that extends the life of the tool and battery.

Package contents

• 1 Yofidra 18V–21V battery (capacity depending on variant chosen)
• User manual and safety instructions

Tips & Safety

• Use only a compatible 18V–21V Li-ion charger.
• Avoid repeated deep discharges to preserve capacity.
• Do not expose to moisture, violent shocks or extreme temperatures.
• Allow the battery to cool down after heavy use before recharging.
• Store between 15°C and 25°C with 40–60% charge for long periods.

FAQ

• Is this battery compatible with my 18V tool? Yes, if your tool accepts 18V–21V batteries in the standard replacement format.
• Can I charge it with my existing charger? Yes, if it is designed for 18V–21V Li-ion batteries.
• Which capacity to choose? 7.5 Ah for short interventions, 15 Ah for general-purpose construction sites, 22.5 Ah for intensive use.
• Is there a memory effect? ​​No, Li-ion technology does not have a memory effect.
• Does it work in cold weather? Yes, with optimal performance in temperate environments; avoid freezing.
• Is it certified? Yes, CE compliant.