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🔋 Power up your productivity—never run out, never slow down!
The SHINTYOOL 21V 4.0Ah lithium-ion battery offers robust, long-lasting power compatible with multiple major cordless tool brands. Featuring a smart LED fuel gauge and a universal charger with safety protections, it’s designed for professionals who demand reliability and real-time battery insights. Lightweight and backed by a 1-year warranty, it’s the perfect upgrade for your leaf blower, mini saw, and other power tools.








| 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 | #93,286 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #853 in Cordless Tool Battery Packs |
| Brand | SHINTYOOL |
| Compatible Phone Models | Compatible: For ALLOYMAN, Aoben, seesill, AVHRIT, Inquire to learn more about compatible brands. |
| Customer Reviews | 4.4 4.4 out of 5 stars (323) |
| Included Components | Battery with Charger Adapter |
| Item Dimensions | 4.7 x 3 x 2.8 inches |
| Item Weight | 9 ounces |
| Manufacturer | SHINTYOOL |
| Model Name | Lithium ion Battery |
| Model Number | 4.0AH |
| 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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