4Ah Spare Battery for Hyundai 20V 2nd Generation RangeThe BI20-4 is a 4Ah lithium-ion spare/replacement battery for Hyundai’s 20V Second Generation range of garden machinery and power tools.Fast Charging & Long RuntimeIt fully charges in just 120 minutes and delivers long runtimes, depending on the tool and task at hand. The integrated LED charge-level indicator keeps you informed of charging progress, while intelligent control that communicates with your tool provides real-time battery status updates.Advanced TES TechnologyFeaturing innovative TES energy storage material, the battery absorbs heat and balances discharge temperature. Combined with advanced air channel technology, it offers optimised cooling and prevents overheating.360° Cell ProtectionThe robust shell structure protects internal battery cells from external impacts. Its leak- and shock-proof sealed electronics ensure reliable operation even in extreme conditions, providing enhanced safety and extended battery life.No Memory EffectThe BI20-4 battery is free from the memory effect, so it can be recharged at any time without losing capacity. This ensures maximum flexibility and a longer service life—keeping your tools powered when you need them.Always ReadyBy purchasing additional 20V 4Ah batteries, you can keep multiple units charged and ready, reducing downtime between uses.In the Hyundai 2nd Generation RangeThis 4Ah battery is suitable for use for the , including:Drill Driver, Impact Driver, Impact Wrench, Angle Grinder, Sander, Reciprocating Saw, Jigsaw, Circular Saw, Grass Trimmer, Hedge Trimmer, Leaf Blower, Chainsaw, Pole Trimmer, and Pole Saw.Battery CompatibilityCompatible with all 20v 2nd Generation tools only -SKUs starting with HY20NOT compatible with 20v MAX 1st Generation tools - SKUs starting with HY213 Year WarrantyThe BI20-4 Hyundai 20V Second Generation 2Ah Li-Ion Battery comes with a 3 year Hyundai warranty* (terms apply) for added peace of mind.Also on the range is our 2Ah Lithium
