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🔋 Power up your productivity—never get caught powerless again!
The SHINTYOOL 21V 4.0 Ah lithium-ion battery features a smart 4-LED power display and a universal 100-240V charger with safety protections. Compatible with a wide range of major power tool brands, it offers reliable, long-lasting energy for leaf blowers, mini saws, and more, backed by a 1-year warranty and customer satisfaction guarantee.








| ASIN | B0B64631SL |
| Amperage | 1 A |
| Antenna Location | Power Tool |
| Battery Capacity | 4000 milliamp_hours |
| Battery Cell Type | Lithium Ion |
| Battery Weight | 1.4 pounds |
| Best Sellers Rank | #76,841 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #786 in Cordless Tool Battery Packs |
| Brand | SHINTYOOL |
| Built-In Media | Battery with Charger Adapter |
| Compatible Phone Models | Compatible: For ALLOYMAN, Aoben, seesill, AVHRIT, Inquire to learn more about compatible brands. |
| Customer Reviews | 4.5 4.5 out of 5 stars (319) |
| Item Dimensions | 4.7 x 3 x 2.8 inches |
| Item Weight | 9 ounces |
| Manufacturer | SHINTYOOL |
| Model Name | bl1820 |
| Model Number | B5503 |
| Number of Batteries | 1 AAAA batteries required. (included) |
| Reusability | Rechargeable |
| Unit Count | 1 Count |
| Voltage | 21 volts |
| Warranty Description | 1 yera |
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