--- product_id: 606566889 title: "Tecmate OptiMate Lithium 4s 6A, TM391, 10-step 12.8V 6A Lithium Expert Battery Saving Charger & Maintainer, Blue/Green" brand: "tecmate" price: "Bs.3824" currency: BOB in_stock: true reviews_count: 5 category: "Tecmate" url: https://www.desertcart.bo/products/606566889-tecmate-optimate-lithium-4s-6a-tm391-10-step-12-8v store_origin: BO region: Bolivia --- # 6A high charging current 10-step advanced charging program BMS wake-up & ultimate battery protection Tecmate OptiMate Lithium 4s 6A, TM391, 10-step 12.8V 6A Lithium Expert Battery Saving Charger & Maintainer, Blue/Green **Brand:** tecmate **Price:** Bs.3824 **Availability:** ✅ In Stock ## Summary > 🔋 Charge smarter, race harder — never miss a beat with OptiMate Lithium 4s 6A! ## Quick Answers - **What is this?** Tecmate OptiMate Lithium 4s 6A, TM391, 10-step 12.8V 6A Lithium Expert Battery Saving Charger & Maintainer, Blue/Green by tecmate - **How much does it cost?** Bs.3824 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.bo](https://www.desertcart.bo/products/606566889-tecmate-optimate-lithium-4s-6a-tm391-10-step-12-8v) ## Best For - tecmate enthusiasts ## Why This Product - Trusted tecmate brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **BMS Wake-Up Mode:** Safely revive batteries with integrated Battery Management System protection—no more dead starts. - • **10-Step Smart Charging:** Experience the most advanced, precision-controlled battery care for longevity and peak power. - • **Race-Ready Reliability:** Trusted by racers and dealers alike for high-performance lithium battery maintenance. - • **Power-Packed 6A Charging:** Maximize your lithium battery’s performance with rapid, reliable 6A current. - • **TUNE Mode for ECU Stability:** Keep your battery stable during critical ECU programming—engineered for pros. ## Overview The Tecmate OptiMate Lithium 4s 6A is a cutting-edge 12.8V lithium battery charger and maintainer featuring a powerful 6A current, a sophisticated 10-step charging program, and integrated BMS wake-up mode. Designed for high-performance LiFePO4 batteries, it ensures ultimate protection and stable support during ECU programming, making it the go-to choice for professional racers and enthusiasts. ## Description OptiMate Lithium 4s 6A, the advanced ‘PRO’ battery charger for the 12.8V/13.2V LiFeP04 / LFP lithium battery in your performance/race motorcycle, car or craft – The racer / dealer’s choice! Review: Excellent - Works flawlessly with my EarthX batteries. A serious charger for the new world of Li batteries. Very robust, you get what you pay for. I would recommend to people I know but I'm the only one with the lithium batteries. Review: Quality - Good kit works great ## Technical Specifications | Specification | Value | |---------------|-------| | Brand | Tecmate | | Colour | ['Blue'] | | Input voltage | 240 Volts | | Item weight | 9.6 Ounces | | Output voltage | 12.8 Volts | | Specification met | ecu | ## Product Details - **Brand:** Tecmate - **Colour:** ['Blue'] - **Item weight:** 9.6 Ounces - **Output voltage:** 12.8 Volts - **Specification met:** ecu ## Images ![Tecmate OptiMate Lithium 4s 6A, TM391, 10-step 12.8V 6A Lithium Expert Battery Saving Charger & Maintainer, Blue/Green - Image 1](https://m.media-amazon.com/images/I/81HNmmJBZrL.jpg) ![Tecmate OptiMate Lithium 4s 6A, TM391, 10-step 12.8V 6A Lithium Expert Battery Saving Charger & Maintainer, Blue/Green - Image 2](https://m.media-amazon.com/images/I/814g4VWCKJL.jpg) ![Tecmate OptiMate Lithium 4s 6A, TM391, 10-step 12.8V 6A Lithium Expert Battery Saving Charger & Maintainer, Blue/Green - Image 3](https://m.media-amazon.com/images/I/81z2yfw6OuL.jpg) ![Tecmate OptiMate Lithium 4s 6A, TM391, 10-step 12.8V 6A Lithium Expert Battery Saving Charger & Maintainer, Blue/Green - Image 4](https://m.media-amazon.com/images/I/81-2JDpCQvL.jpg) ![Tecmate OptiMate Lithium 4s 6A, TM391, 10-step 12.8V 6A Lithium Expert Battery Saving Charger & Maintainer, Blue/Green - Image 5](https://m.media-amazon.com/images/I/81-PLkK2Z3L.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Excellent *by M***E on 12 February 2026* Works flawlessly with my EarthX batteries. A serious charger for the new world of Li batteries. Very robust, you get what you pay for. I would recommend to people I know but I'm the only one with the lithium batteries. ### ⭐⭐⭐⭐⭐ Quality *by S***S on 1 March 2025* Good kit works great ### ⭐⭐⭐⭐⭐ Perfect, cheaper than the Motorcyle branded charger... *by R***B on 1 March 2023* Higher current charger enables me to reuse this for any other sized batteries I may have. BMS reset feature looks handy but have not had a chance to use it. Case seems really sturdy compared to other trickle charges I have, but they are rated 1 Amp and below... ## Frequently Bought Together - Tecmate OptiMate Lithium 4s 6A, TM391, 10-step 12.8V 6A Lithium Expert Battery Saving Charger & Maintainer, Blue/Green - Optimate cable O-127 ring terminal harness with integrated battery status / charge system monitor, 12.8V / 13.2V lithium powersport, smart --- ## 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.bo/products/606566889-tecmate-optimate-lithium-4s-6a-tm391-10-step-12-8v](https://www.desertcart.bo/products/606566889-tecmate-optimate-lithium-4s-6a-tm391-10-step-12-8v) --- *Product available on Desertcart Bolivia* *Store origin: BO* *Last updated: 2026-06-18*