--- product_id: 17483206 title: "OptiMATE Lithium 4s 0.8A, TM-471, 8-step 12.8V 0.8A sealed battery saving charger & maintainer" brand: "optimate" price: "€ 138.94" currency: EUR in_stock: true category: "Opti Mate" url: https://www.desertcart.pt/products/17483206-optimate-lithium-4s-0-8a-tm-471-8-step-12 store_origin: PT region: Portugal --- # 0.8A precise charging current 8-step smart battery maintenance Integrated BMS protection OptiMATE Lithium 4s 0.8A, TM-471, 8-step 12.8V 0.8A sealed battery saving charger & maintainer **Brand:** optimate **Price:** € 138.94 **Availability:** ✅ In Stock ## Summary > 🔋 Charge smarter, last longer — never miss a beat! ## Quick Answers - **What is this?** OptiMATE Lithium 4s 0.8A, TM-471, 8-step 12.8V 0.8A sealed battery saving charger & maintainer by optimate - **How much does it cost?** € 138.94 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/17483206-optimate-lithium-4s-0-8a-tm-471-8-step-12) ## Best For - optimate enthusiasts ## Why This Product - Trusted optimate brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **BMS Wake-Up Mode:** Safely reactivates batteries with built-in management system - • **Trusted Longevity:** Backed by a 3-year warranty and 4.6-star user approval - • **Compact Powerhouse:** Sleek 6x8x3 inch design fits anywhere, weighs just 16 oz - • **Smart 8-Step Charging:** Optimizes battery health with precision charging cycles - • **Revive the Unrevivable:** Saves dead Lithium batteries others give up on ## Overview The OptiMATE Lithium 4s 0.8A TM-471 is a cutting-edge 8-step 12.8V battery charger and maintainer designed specifically for high-performance Lithium (LiFePO4/LiFe/LFP) batteries. It features a precise 0.8A charging current, integrated Battery Management System (BMS) wake-up mode to safely revive deeply discharged batteries, and a compact, lightweight design. With a 3-year warranty and top user ratings, it guarantees longer battery life and reliable maintenance for professionals who demand peak performance. ## Description Buy OptiMATE Lithium 4s 0.8A, TM-471, 8-step 12.8V 0.8A sealed battery saving charger & maintainer: Battery Chargers - desertcart.com ✓ FREE DELIVERY possible on eligible purchases ## Features - Longer battery life and more battery power guaranteed. - Ultimate protection for your high-performance Lithium (LiFePO4 / LiFe / LFP) battery. - Saves dead batteries other chargers can't! - BMS (Battery Management System) wake up mode safely wakes battery with integrated BMS protection out of sleep mode. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00Y38X7WI | | Amperage | 0.8 A | | Battery Charge Time | 6 hours | | Best Sellers Rank | #54,733 in Automotive ( See Top 100 in Automotive ) #264 in Battery Chargers | | Brand | OptiMate | | Built-In Media | Battery Charger, Battery Lead, Battery Clips | | Color | Black, Blue, Red, Silver | | Connector Type Used on Cable | clamps and ringlet connector | | Current Rating | 0.8 A | | Customer Reviews | 4.6 out of 5 stars 776 Reviews | | Global Trade Identification Number | 05425006145718 | | Input Voltage | 12 volts | | Item Dimensions D x W x H | 6"D x 8"W x 3"H | | Item Type Name | OptiMate Lithium 4s 0.8A, TM471, 8-step 12.8V 0.8A Lithium Expert Battery Saving Charger & Maintainer | | Item Weight | 16 ounces | | Manufacturer | OptiMate | | Mfr Part Number | TM-471 | | Model Number | TM-471 | | Number of Items | 1 | | Number of Ports | 1 | | Output Voltage | 12 volts_of_direct_current | | Product Dimensions | 6"D x 8"W x 3"H | | Specification Met | CEC | | Unit Count | 1 Count | | Warranty Description | 3 Years | ## Product Details - **Brand:** OptiMate - **Color:** Black, Blue, Red, Silver - **Item Weight:** 16 ounces - **Output Voltage:** 12 volts_of_direct_current - **Product Dimensions:** 6"D x 8"W x 3"H ## Images ![OptiMATE Lithium 4s 0.8A, TM-471, 8-step 12.8V 0.8A sealed battery saving charger & maintainer - Image 1](https://m.media-amazon.com/images/I/81iACDxBz7L.jpg) ![OptiMATE Lithium 4s 0.8A, TM-471, 8-step 12.8V 0.8A sealed battery saving charger & maintainer - Image 2](https://m.media-amazon.com/images/I/71LQWxY5WqL.jpg) ![OptiMATE Lithium 4s 0.8A, TM-471, 8-step 12.8V 0.8A sealed battery saving charger & maintainer - Image 3](https://m.media-amazon.com/images/I/71q5mOkp54L.jpg) ![OptiMATE Lithium 4s 0.8A, TM-471, 8-step 12.8V 0.8A sealed battery saving charger & maintainer - Image 4](https://m.media-amazon.com/images/I/81c9UMi6fFL.jpg) ![OptiMATE Lithium 4s 0.8A, TM-471, 8-step 12.8V 0.8A sealed battery saving charger & maintainer - Image 5](https://m.media-amazon.com/images/I/812+WcQbdIL.jpg) ## Questions & Answers **Q: Capacity of my lithium battary is 100ah, if it discharge 70 %,would this charger to charge battery to full capacity?** A: Yes, provided that your battery cells are in good condition and are able to take/hold a charge, this charger will charge it to 100% **Q: Will this charge lithium iron batteries like Shorai?** A: I've been using it on my Shorai battery for about 1 year and it works Great! **Q: Can I get it with eu plug?** A: We don't offer the EU plug, but it can be used with an EU plug (100-240V). **Q: How long will it take to charge 80 as (group 27) lithium lifepo4 battery? 20 hours, or few days? thanks** A: Instructions say it will take 125% of the battery AH capacity for the battery to charge, so I assume you multiply your amp hours by 125% to get a rough estimate ## Frequently Bought Together - OptiMATE Lithium 4s 0.8A, TM-471, 8-step 12.8V 0.8A sealed battery saving charger & maintainer - Antigravity ATZ-10 Performance Lithium Motorcycle Powersport Battery with Built-In Jump Starting. 6.1Ah, Replaces YTZ10, YTZ12, YTZ14, YTX9, YTX7A Yamaha, Honda, Kawasaki, Suzuki --- ## 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.pt/products/17483206-optimate-lithium-4s-0-8a-tm-471-8-step-12](https://www.desertcart.pt/products/17483206-optimate-lithium-4s-0-8a-tm-471-8-step-12) --- *Product available on Desertcart Portugal* *Store origin: PT* *Last updated: 2026-09-14*