--- product_id: 128430976 title: "Lithium Battery Board 3S 40A 12V Multi-Protectional Lithium Battery Charging Board PCB Board with Balance Charging" brand: "keenso" price: "¥2940" currency: JPY in_stock: true reviews_count: 6 url: https://www.desertcart.jp/products/128430976-lithium-battery-board-3s-40a-12v-multi-protectional-lithium-battery store_origin: JP region: Japan --- # 40A high current capacity Aluminum fins for rapid heat dissipation Multi-layer protection system Lithium Battery Board 3S 40A 12V Multi-Protectional Lithium Battery Charging Board PCB Board with Balance Charging **Brand:** keenso **Price:** ¥2940 **Availability:** ✅ In Stock ## Summary > ⚡ Charge smarter, last longer — power your future with confidence! ## Quick Answers - **What is this?** Lithium Battery Board 3S 40A 12V Multi-Protectional Lithium Battery Charging Board PCB Board with Balance Charging by keenso - **How much does it cost?** ¥2940 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/128430976-lithium-battery-board-3s-40a-12v-multi-protectional-lithium-battery) ## Best For - keenso enthusiasts ## Why This Product - Trusted keenso brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Quality You Can Trust:** Rigorous multi-load and aging tests plus CE certification guarantee durability and safety. - • **Smart Balance Charging:** Intelligent IC balances each cell, extending battery lifespan and optimizing charge efficiency. - • **Stay Cool Under Pressure:** Thickened aluminum fins ensure quick heat dissipation for longer board life and reliability. - • **Built-In Multi-Protection:** Safeguards your battery with overcharge, over-discharge, short circuit, and temperature defenses. - • **Power Through with 40A Current:** Handles high loads effortlessly for professional-grade performance. ## Overview The Keenso 3S 40A 12V Lithium Battery Charging Board is a premium PCB designed for efficient, safe, and balanced lithium battery charging. Featuring multi-protection safeguards, rapid heat dissipation via aluminum fins, and intelligent cell management, it ensures optimal battery performance and longevity. CE certified and rigorously tested, this compact 10g board is ideal for professionals demanding reliability and safety in their power solutions. ## Description Full description not available ## Features - Premium Quality --- This circuit board 3S 40A made of high quality integrated components, not easily damaged, with stable performance. Your better choice for Lithium Battery Charging Board. - Multi-protection Design --- This PCB board designed with a variety of functions including overcharge, over discharge, short circuit, and temperature protection, multiple load and aging test for quality assurance. - Quick Heat Dissipation --- 3S 40A Lithium Battery Charging Board is equipped with thickened aluminum fin to speed up heat radiating, which helps to effectively improve the efficiency, can provide you with a superior using experience. - Fast & Safe Charging --- This lithium battery board adopts intelligent lithium cell management IC, ensuring fast and safe charging. With balance charging to balance the characteristic of each battery in battery pack and prolong your battery life. - Service Guarantee --- test Overcharge Board before shipping, fast money refund & new replacement! We provide perfect customer service, please contact us if there is ANY problems. ## Technical Specifications | Specification | Value | |---------------|-------| | Manufacturer | Keenso | | Part number | Keenso6qmdak2xh5 | | Item Weight | 10 g | | Product Dimensions | 7.01 x 8 x 5.99 cm; 10 g | | Item model number | Keenso6qmdak2xh5 | | Colour | Black | | Voltage | 3.7 Volts, 12 Volts | | Item Package Quantity | 1 | | Specification met | CE | | Batteries included? | No | | Batteries Required? | No | | Battery Cell Type | Lithium | | tech_spec_battery_description_toys | 12V | ## Product Details - **Brand:** Keenso - **Colour:** Black - **Product dimensions:** 7D x 8W x 6H centimetres - **Item weight:** 0.01 Kilograms - **Output voltage:** 4.2 Volts (DC) ## Images ![Lithium Battery Board 3S 40A 12V Multi-Protectional Lithium Battery Charging Board PCB Board with Balance Charging - Image 1](https://m.media-amazon.com/images/I/71Rs5Tu-9mS.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Works well so far *by A***D on 22 January 2021* Top balances which is what I wanted most and does so without getting too hot ### ⭐⭐⭐⭐ Very happy 5 months in, doing their job *by I***E on 28 June 2022* They are doing a good job cutting out from over charge from the cheap lead solar controller. Previously had explosion and fire. ### ⭐ No short-circuit protection *by A***J on 11 January 2021* Product looked good but did not work correctly. The short-circuit protection does not work, this will continuously allow electricity to flow during a short circuit event.Very disappointed. ## Frequently Bought Together - Lithium Battery Protection Board 3S 40A 12V Multi-Protectional Lithium Battery Charging Protection Board BMS PCB Board with Balance Charging - Bluelover Pack of 200 Cardboard 18650 Battery Insulators Electric Insulating Adhesive Paper - 10M Nickel Strip, 0.15x8MM Battery Nickel Strip, 18650 Lithium Battery Nickel-Hydrogen and Nickel-Cadmium Battery Pack Welding Belt Lug --- ## 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.jp/products/128430976-lithium-battery-board-3s-40a-12v-multi-protectional-lithium-battery](https://www.desertcart.jp/products/128430976-lithium-battery-board-3s-40a-12v-multi-protectional-lithium-battery) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-05-10*