--- product_id: 723634654 title: "KUNLUNLB2X4020 6.5Ah 20 Volt Replacement Battery Compatible with Black and Decker 20V MAX Lithium Battery LBXR20 LB20 LBX20 LBXR2020-OPE LBXR20B-2 LBX4020 LST220" price: "€ 220.77" currency: EUR in_stock: true url: https://www.desertcart.hr/products/723634654-kunlunlb2x4020-6-5ah-20-volt-replacement-battery-compatible-with-black store_origin: HR region: Croatia --- # KUNLUNLB2X4020 6.5Ah 20 Volt Replacement Battery Compatible with Black and Decker 20V MAX Lithium Battery LBXR20 LB20 LBX20 LBXR2020-OPE LBXR20B-2 LBX4020 LST220 **Price:** € 220.77 **Availability:** ✅ In Stock ## Quick Answers - **What is this?** KUNLUNLB2X4020 6.5Ah 20 Volt Replacement Battery Compatible with Black and Decker 20V MAX Lithium Battery LBXR20 LB20 LBX20 LBXR2020-OPE LBXR20B-2 LBX4020 LST220 - **How much does it cost?** € 220.77 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/723634654-kunlunlb2x4020-6-5ah-20-volt-replacement-battery-compatible-with-black) ## Best For - Customers looking for quality international products ## Why This Product - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Description KUNLUNLB2X4020 6.5Ah 20 Volt Replacement Battery Compatible with Black and Decker 20V MAX Lithium Battery LBXR20 LB20 LBX20 LBXR2020-OPE LBXR20B-2 LBX4020 LST220 ## Technical Specifications | Specification | Value | |---------------|-------| | Item Weight | 640 Grams | | Battery Weight | 640 Grams | | Unit Count | 1 Count | | Battery Cell Type | Lithium Ion | | Recommended Uses For Product | For Black and Decker 20V cordless tools | | Reusability | Rechargeable | | Battery Capacity | 6500 Milliamp Hours | | Amperage | 6.5 Amps | | Voltage | 20 Volts | | Compatible Phone Models | Compatible for all Black and Decker 20V cordless tools | ## Product Details - **Number of Batteries:** 1 Lithium Ion batteries required. (included) - **Brand:** KUNLUN - **Battery Cell Composition:** Lithium Ion - **Compatible Phone Models:** Compatible for all Black and Decker 20V cordless tools - **Recommended Uses For Product:** For Black and Decker 20V cordless tools ## Images ![KUNLUNLB2X4020 6.5Ah 20 Volt Replacement Battery Compatible with Black and Decker 20V MAX Lithium Battery LBXR20 LB20 LBX20 LBXR2020-OPE LBXR20B-2 LBX4020 LST220 - Image 1](https://m.media-amazon.com/images/I/71nYbkRcGPL.jpg) ## Questions & Answers **Q: how much does the battery weigh?** A: I weighed my 20 volt 6.5 amp hour battery for you. It weighs 635 grams (1.39 pounds or 22.39 ounces). For comparrison, my standard 20 volt 1.5 amp hour battery weighs 367 grams (0.8 pounds or 12.9 ounces). Yes, it adds weight to whatever tool you are using but well worth it for the major increase in run time. Hope this helps and answers your question. **Q: Will this battery work with black+decker powerseries extreme cordless stick vacuum cleaner, (bsv2020g)?** A: It will work with any B+D tool that uses a 20V Max Lithium battery as a power source. If your B+D cordless stick vac uses a 20V Max Lithium battery, then this battery should work with it. If your stick vac uses some other power source, such as a different voltage, then this battery will not work. **Q: I am charging it using black and decker charger and green light is blinking… what does it mean?** A: I don't know what type of Black & Decker charger you are using. There are different kinds and different voltages. Does yours also have a red light or does it only have one green light. If there is only one green light, most likely it is just flashing to show it is charging. Some chargers also flash if the connection to the battery is not good. Try cleaning the metal contacts and start again. Try making sure the charger is pushed completely onto the battery. If the battery is very cold it could effect charging. Bring it to a warmer temperature and try again. Some chargers are not meant for lithium batteries and the charger will also flash then. I use a stand up Black & Decker quick charger and I have not had any problems. I hope this has helped. **Q: Will this battery work on the Hercules 20 volt power tools from Harbor Freight?** A: I don't have any experience with Harbor Freight tools but I am not aware of any tool company that has interchangeable batteries. From my experience, batteries have been brand specific. ## Frequently Bought Together - KUNLUN 6.5Ah 20-Volt LB2X4020 Replacement Battery Compatible for Black and Decker 20V Lithium Battery MAX LBXR20 LB20 LBX20 LBXR2020-OPE LBXR20B-2 LBX4020 LST220 - KUNLUN LCS1620 20V Lithium Battery Charger Compatible for Black & Decker 20V Lithium Battery LBXR20 LBXR20B LBXR20-OPE LB20 LBX20 LBX4020 LB2X4020 LBXR2020-OPE BL1514 LBXR16 LST220 --- ## 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.hr/products/723634654-kunlunlb2x4020-6-5ah-20-volt-replacement-battery-compatible-with-black](https://www.desertcart.hr/products/723634654-kunlunlb2x4020-6-5ah-20-volt-replacement-battery-compatible-with-black) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-05-14*