--- product_id: 502239513 title: "21v Lithium Battery - 4.0 Ah Battery with Charger Adapter Led Indicator Compatible with Leaf Blower" brand: "shintyool" price: "C$4115" currency: NIO in_stock: true reviews_count: 13 category: "Shintyool" url: https://www.desertcart.ni/products/502239513-21v-lithium-battery-4-0-ah-battery-with-charger-adapter store_origin: NI region: Nicaragua --- # 4.0 Ah Long Runtime 21V Lithium Power LED Charging Indicator 21v Lithium Battery - 4.0 Ah Battery with Charger Adapter Led Indicator Compatible with Leaf Blower **Brand:** shintyool **Price:** C$4115 **Availability:** ✅ In Stock ## Summary > 🔋 Power your productivity with confidence—never get caught powerless again! ## Quick Answers - **What is this?** 21v Lithium Battery - 4.0 Ah Battery with Charger Adapter Led Indicator Compatible with Leaf Blower by shintyool - **How much does it cost?** C$4115 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.ni](https://www.desertcart.ni/products/502239513-21v-lithium-battery-4-0-ah-battery-with-charger-adapter) ## Best For - shintyool enthusiasts ## Why This Product - Trusted shintyool brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Safe & Reliable:** Multi-protect system guards against overload, overheating, and over-discharge for peace of mind. - • **Power Up Your Tools:** 21V lithium-ion battery delivers stable, high-capacity energy for extended use. - • **Stay Informed Instantly:** Built-in LED indicator shows real-time charge status—no guesswork needed. - • **Universal Compatibility:** Fits major 21V power tools including off-brand leaf blowers for seamless replacement. - • **Run Longer, Work Smarter:** 4.0 Ah capacity means fewer interruptions and more productivity on every charge. ## Overview The SHINTYOOL 21V 4.0 Ah lithium-ion battery offers a powerful, long-lasting energy solution compatible with a wide range of 21V cordless tools, including leaf blowers. Featuring a fast charger with LED indicator and advanced safety protections, it ensures reliable performance and extended runtime, making it the smart upgrade for professionals seeking dependable power without OEM price tags. ## Description Buy SHINTYOOL 21v Lithium Battery - 4.0 Ah Battery with Charger Adapter Led Indicator Compatible with Leaf Blower: Battery Chargers - desertcart.com ✓ FREE DELIVERY possible on eligible purchases Review: SHINTYOOL 21v 4.0 Ah Battery: A Perfect, Powerful Replacement for Off-Brand Tools! - I received the SHINTYOOL 21v Lithium Battery with Charger Adapter (4.0 Ah), and I am genuinely impressed. I took a chance hoping this would be a compatible solution for my slightly older, off-brand 21v cordless leaf blower—and it was a perfect fit! Finding reliable battery replacements for generic or lesser-known tool brands can be a nightmare, but this SHINTYOOL battery snapped into place smoothly, instantly reviving my leaf blower. The 4.0 Ah capacity is a significant upgrade over my original battery, providing a noticeable increase in run time. I was able to clear my entire yard without needing a recharge, which was never possible before. The accompanying charger works quickly and efficiently, and the built-in LED indicator on the battery itself is incredibly useful for quickly gauging the remaining charge without having to plug it into the tool or charger. This battery delivers consistent, strong performance and proves you don't always need to buy the expensive OEM part for quality power. If you have an off-brand 21v tool, give this battery a try—it's a high-quality, high-capacity solution. Pros: Perfect fit and compatibility with generic 21v tools. 4.0 Ah capacity delivers excellent, long-lasting run time. Reliable and fast charging. Clear LED indicator for checking battery life. Review: Quality - Works well ## Features - ★ 【Compatible with More 】Our batteries are compatible with some major brands, for power tools bl1860b bl1850 bl1840 bl1850b-2 bl1845 bl1830 bl1820 bl1815 lxt-400 series please feel free to contact us for more model information. - ★【21 Volt Lithium Battery 】Battery voltage: 21v, capacity: 4000ah, type: lithium ion, made of 10 pcs quality lithium ion battery,can provide stable capacity and output. - ★【Charger】Support 100-240v universal standard ac input voltage.1a power adapter,us plug,led indicator to easily see the charging situation. - ★【Multi-Protect Safety System】This battery is equipped with overload protection, overheat protection & over-discharge protection. - ★【Note on Battery】In order to protect the battery, please do not charge more than 6 hours.Note: Please Fully charge the battery before its first use. Please do not charge the battery for overnight since it will badly damage the battery life. - ★【WE’VE GOT YOU COVERED】 Any Non-human Damage Or Any Reason You Are Not Completely Satisfied With Our Product, We Will Immediately Provide You A Full Refund ( Or Replace Your Item). ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0BF9DBLC2 | | Amperage | 1 A | | Antenna Location | Power Tool | | Battery Capacity | 4 amp_hours | | Battery Cell Composition | Lithium | | Battery Cell Type | Lithium | | Battery Weight | 1.3 pounds | | Best Sellers Rank | #26,760 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #253 in Cordless Tool Battery Packs | | Brand | SHINTYOOL | | Compatible Phone Models | For ALLOYMAN, Aoben, seesill, EWORK, Inquire to learn more about compatible brands. | | Customer Reviews | 4.4 out of 5 stars 936 Reviews | | Item Weight | 9 ounces | | Manufacturer | SHINTYOOL | | Model Name | 4.0ah Li-ion Battery | | Model Number | 4.0AH | | Number of Batteries | 1 Lithium Ion batteries required. | | Recommended Uses For Product | Power Tool | | Reusability | Rechargeable | | Unit Count | 1 Count | | Voltage | 21 | | Warranty Description | 1 yera | ## Product Details - **Battery Capacity:** 4 amp_hours - **Battery Cell Composition:** Lithium - **Brand:** SHINTYOOL - **Number of Batteries:** 1 Lithium Ion batteries required. - **Recommended Uses For Product:** Power Tool ## Images ![21v Lithium Battery - 4.0 Ah Battery with Charger Adapter Led Indicator Compatible with Leaf Blower - Image 1](https://m.media-amazon.com/images/I/61oXd+D0MgL.jpg) ## Available Options This product comes in different **Size** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ SHINTYOOL 21v 4.0 Ah Battery: A Perfect, Powerful Replacement for Off-Brand Tools! *by R***R on October 6, 2025* I received the SHINTYOOL 21v Lithium Battery with Charger Adapter (4.0 Ah), and I am genuinely impressed. I took a chance hoping this would be a compatible solution for my slightly older, off-brand 21v cordless leaf blower—and it was a perfect fit! Finding reliable battery replacements for generic or lesser-known tool brands can be a nightmare, but this SHINTYOOL battery snapped into place smoothly, instantly reviving my leaf blower. The 4.0 Ah capacity is a significant upgrade over my original battery, providing a noticeable increase in run time. I was able to clear my entire yard without needing a recharge, which was never possible before. The accompanying charger works quickly and efficiently, and the built-in LED indicator on the battery itself is incredibly useful for quickly gauging the remaining charge without having to plug it into the tool or charger. This battery delivers consistent, strong performance and proves you don't always need to buy the expensive OEM part for quality power. If you have an off-brand 21v tool, give this battery a try—it's a high-quality, high-capacity solution. Pros: Perfect fit and compatibility with generic 21v tools. 4.0 Ah capacity delivers excellent, long-lasting run time. Reliable and fast charging. Clear LED indicator for checking battery life. ### ⭐⭐⭐⭐⭐ Quality *by M***I on July 11, 2026* Works well ### ⭐⭐⭐⭐⭐ Outstanding Product *by V***N on October 24, 2025* Excellent product and the charger helped charge two other similar batteries of a different manufacturer. Very happy. Takes awhile, several hours to fully charge but the lasting time excellent. Use these for an upgraded power lawn tool for heavy duty work. ## Frequently Bought Together - SHINTYOOL 21v Lithium Battery - 4.0 Ah Battery with Charger Adapter Led Indicator Compatible with Leaf Blower - SHINTYOOL 21V Single Port Rapid Charger Base, Fast Charger for 21V Lithium-Ion Battery (Battery Not Included) --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.ni/products/502239513-21v-lithium-battery-4-0-ah-battery-with-charger-adapter](https://www.desertcart.ni/products/502239513-21v-lithium-battery-4-0-ah-battery-with-charger-adapter) --- *Product available on Desertcart Nicaragua* *Store origin: NI* *Last updated: 2026-08-23*