--- product_id: 502239513 title: "21v 4.0AH lithium battery" brand: "shintyool" price: "₨1145" currency: SCR in_stock: true category: "Shintyool" url: https://www.desertcart.sc/products/502239513-21v-4-0ah-lithium-battery store_origin: SC region: Seychelles --- # 4.0 Ah Long Runtime 21V Lithium Power Fast Universal Charging 21v 4.0AH lithium battery **Brand:** shintyool **Price:** ₨1145 **Availability:** ✅ In Stock ## Summary > 🔋 Power your productivity, don’t get left powerless! ## Quick Answers - **What is this?** 21v 4.0AH lithium battery by shintyool - **How much does it cost?** ₨1145 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sc](https://www.desertcart.sc/products/502239513-21v-4-0ah-lithium-battery) ## 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 - • **Power Up Your Tools:** 21V lithium-ion battery delivers stable, high-capacity energy for extended use. - • **Safety First, Always:** Built-in multi-protect system guards against overload, overheating, and over-discharge. - • **Charge with Confidence:** Universal 100-240V charger with LED indicator keeps you informed and ready to go. - • **Seamless Compatibility:** Fits major 21V power tools including off-brand models—upgrade without the OEM price tag. - • **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 is a high-capacity, rechargeable power source compatible with a wide range of 21V cordless tools, including leaf blowers. Featuring a universal fast charger with LED status indicator and advanced safety protections, it offers reliable, long-lasting performance that outlasts many OEM batteries. Perfect for professionals and DIYers seeking dependable power and seamless compatibility without premium costs. ## Description Product description A Great Gift Idea For Dad, Mom, Husband, Friends And Family, Suitable For Everyone Who Needs It, Whether You Are A Professional Or An Average Person. Any Non-human Damage Or Any Reason You Are Not Completely Satisfied With Our Product, We Will Immediately Provide You Replace Your Item. Type: 4.0AH Battery Type: Battery power adapter How to install battery Step 1: Hold the machine firmly with one hand. Push down the battery unlock button located on the rear side of the battery with the other hand. Step 2: Keep pushing the unlock button down and slide the battery backward out of the machine. Step 3: You made it. Note： 1. Do not try to open the battery. 2. Protect the battery against continuous intense sunlight, fire, water, and moisture. 3. Do not damage the battery with sharp objects. 4. Do not discard this product at will. 5. Overcharging the device will reduce the life of the battery, unplug it from the charger in time to avoid overcharging. 6. If the battery does not last 10 minutes, it may be caused by overheating. Please wait for 5 minutes for the battery to cool down. Battery Maintenance Please read the following notes on battery maintenance carefully After receiving the product, please fully charge the battery before using it. In order to protect the battery, please do not charge the battery for a long time. The best time to charge is not more than 6 hours. Please do not charge the battery all night, it will seriously damage the battery life. Always remove battery pack from your tool when you are assembling parts,making adjustments,cleaning,or when not being used for an extended time. Do not leave the battery dormant for long periods of time. We recommend using the battery at least once every two to three weeks. ## 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 Amps | | Antenna Location | Power Tool | | Battery Capacity | 4 Amp Hours | | Battery Cell Composition | Lithium | | Battery Cell Type | Lithium | | Battery Weight | 20 Ounces | | Best Sellers Rank | #15,209 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #126 in Cordless Tool Battery Packs | | Brand | SHINTYOOL | | Compatible Phone Models | For ALLOYMAN, Aoben, seesill, EWORK, Inquire to learn more about compatible brands. | | Item Weight | 9 Ounces | | Manufacturer | SHINTYOOL | | Model Number | INR18650 2000mAh-5C | | Number of Batteries | 1 Lithium Ion batteries required. | | Recommended Uses For Product | Power Tool | | Reusability | Rechargeable | | Unit Count | 1.0 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 4.0AH lithium battery - Image 1](https://m.media-amazon.com/images/I/61oXd+D0MgL.jpg) ![21v 4.0AH lithium battery - Image 2](https://m.media-amazon.com/images/I/61WPdsv++aL.jpg) ![21v 4.0AH lithium battery - Image 3](https://m.media-amazon.com/images/I/71kyEYMeqzL.jpg) ![21v 4.0AH lithium battery - Image 4](https://m.media-amazon.com/images/I/61qCPzXrMkL.jpg) ![21v 4.0AH lithium battery - Image 5](https://m.media-amazon.com/images/I/610+FH2-S6L.jpg) ## Available Options This product comes in different **Size** options. ## 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.sc/products/502239513-21v-4-0ah-lithium-battery](https://www.desertcart.sc/products/502239513-21v-4-0ah-lithium-battery) --- *Product available on Desertcart Seychelles* *Store origin: SC* *Last updated: 2026-05-13*