--- 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: "3620 kr" currency: NOK in_stock: true url: https://www.desertcart.no/products/606566889-tecmate-optimate-lithium-4s-6a-tm391-10-step-12-8v store_origin: NO region: Norway --- # 6A high current charge 10-step advanced charging BMS wake-up & protection Tecmate OptiMate Lithium 4s 6A, TM391, 10-step 12.8V 6A Lithium Expert Battery Saving Charger & Maintainer, Blue/Green **Brand:** tecmate **Price:** 3620 kr **Availability:** ✅ In Stock ## Summary > 🔋 Charge like a pro, stay ahead of the pack! ## 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?** 3620 kr with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.no](https://www.desertcart.no/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 revives batteries with integrated Battery Management System protection. - • **Race-Ready Reliability:** Trusted by racers and dealers for high-performance lithium battery care. - • **Power-Packed 6A Current:** Charge faster and smarter with industry-leading 6 amps output. - • **10-Step Precision Charging:** Expertly engineered multi-stage program maximizes battery life and performance. - • **TUNE Mode for ECU Stability:** Maintain stable battery support during critical ECU programming sessions. ## Overview The Tecmate OptiMate Lithium 4s 6A is a cutting-edge 10-step battery charger and maintainer designed specifically for 12.8V LiFePO4 lithium batteries. Delivering a powerful 6A current, it features advanced BMS wake-up technology and a unique TUNE mode for ECU programming, making it the go-to choice for performance motorcycles, cars, and crafts seeking optimal battery health and longevity. ## Features - More charging power and current at 6A! - Ultimate protection for your high performance Lithium (LiFePO4 / LiFe / LFP) battery. - Most advanced 10-step charging and battery saving program. - BMS (Battery Management System) wake up mode safely wakes battery with integrated BMS protection out of sleep mode. - TUNE mode provides stable battery support during ECU programming. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B09Z71LQF9 | | Amperage | 0.76 Amps | | Best Sellers Rank | #4,001 in Automotive ( See Top 100 in Automotive ) #17 in Battery Chargers | | Brand | Tecmate | | Built-In Media | Battery Charger, weatherproof battery lead & battery clip set | | Color | ['Blue'] | | Compatible Devices | Lithium batteries (LiFePO4 / LiFe / LFP), specifically 12.8V/13.2V 4s batteries used in motorcycles, cars, and crafts | | Current Rating | 6 Amps | | Customer Reviews | 4.8 4.8 out of 5 stars (42) | | Input Voltage | 240 Volts | | Item Type Name | Battery Charger | | Item Weight | 9.6 Ounces | | Manufacturer | TecMate | | Mfr Part Number | TM391 | | Model Number | TM391 | | Number of Items | 1 | | Number of Packs | 1 | | Number of Ports | 1 | | Output Voltage | 12.8 Volts | | Specification Met | ecu | | Unit Count | 1 Count | ## 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) ## 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.no/products/606566889-tecmate-optimate-lithium-4s-6a-tm391-10-step-12-8v](https://www.desertcart.no/products/606566889-tecmate-optimate-lithium-4s-6a-tm391-10-step-12-8v) --- *Product available on Desertcart Norway* *Store origin: NO* *Last updated: 2026-09-17*