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See all product reviews4Ah Spare Battery for Hyundai 20V 2nd Generation Range
The 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 Runtime
It 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 Technology
Featuring 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 Protection
The 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 Effect
The 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 Ready
By purchasing additional 20V 4Ah batteries, you can keep multiple units charged and ready, reducing downtime between uses.
In the Hyundai 2nd Generation Range
This 4Ah battery is suitable for use for the Hyundai 20V 2nd Generation Garden machinery and Power Tool range, 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 Compatibility
- Compatible with all 20v 2nd Generation tools only -SKUs starting with HY20
- NOT compatible with 20v MAX 1st Generation tools - SKUs starting with HY21
3 Year Warranty
The BI20-4 Hyundai 20V Second Generation 2Ah Li-Ion Battery comes with a 3 year Hyundai warranty* (terms apply) for added peace of mind.
At a Glance
- 4Ah lithium-ion battery for Hyundai 20V 2nd Generation tools
- Charges in just 120 minutes
- Long runtime with real-time status monitoring
- Interchangeable across the full Hyundai 20V 2nd Generation range
- 3-year Hyundai warranty*
Specifications
| Model | BI20-4 |
|---|---|
| Compatibility | 20v 2nd Generation Range |
| Battery (ah) | 4 |
| Voltage (v) | 20 |
| Gross Weight (kg) | 0.65 |
| Net Weight (kg) | - |
| Package Dimensions (H x W x L) (mm) | - |
| Product Type | Battery |
| Warranty (years) | 3 |
| Model EAN | - |
| In The Box | 4.0Ah Battery & User Manual |
| Feature 1 | Fast 120-Minute Charge Time: Recharges in just 2 hours, minimising downtime and keeping your tools powered up. |
| Feature 2 | Intelligent Battery Management : Built-in LED charge level indicator and real-time status monitoring for optimal performance and control. |
| Feature 3 | Advanced TES Cooling Technology: Innovative TES material and air channel design prevent overheating and extend battery life. |
| Feature 4 | Robust 360° Cell Protection: Durable casing with shock- and leak-proof sealed electronics ensures safe operation even in harsh conditions. |
| Feature 5 | Interchangeable Across 20V 2nd Gen Tools: Fully compatible with all Hyundai 20V Second Generation garden and power tools |
Reviews of Hyundai 20V 4Ah Li-Ion Replacement Battery for 2nd Generation 20v Range | BI20-4
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