---
product_id: 17483206
title: "Lithium 4s 0.8A, TM-471, 8-step 12.8V 0.8A sealed battery saving charger & maintainer"
brand: "optimate"
price: "107015CFA"
currency: XOF
in_stock: true
reviews_count: 13
category: "Opti Mate"
url: https://www.desertcart.sn/products/17483206-lithium-4s-0-8a-tm-471-8-step-12-8v
store_origin: SN
region: Senegal
---

# 0.8A precision charging 8-step lithium-specific cycle Integrated BMS battery protection Lithium 4s 0.8A, TM-471, 8-step 12.8V 0.8A sealed battery saving charger & maintainer

**Brand:** optimate
**Price:** 107015CFA
**Availability:** ✅ In Stock

## Summary

> 🔌 Charge smarter, last longer — never get stranded again!

## Quick Answers

- **What is this?** Lithium 4s 0.8A, TM-471, 8-step 12.8V 0.8A sealed battery saving charger & maintainer by optimate
- **How much does it cost?** 107015CFA with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sn](https://www.desertcart.sn/products/17483206-lithium-4s-0-8a-tm-471-8-step-12-8v)

## 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 revives deeply discharged batteries with built-in Battery Management System compatibility.
- • **Walk-Away Convenience:** Set it and forget it with smart, fully automated charging that guarantees optimal performance every time.
- • **Precision 0.8A Current:** Gentle yet effective charging tailored for lithium batteries, extending battery lifespan without overload.
- • **Advanced 8-Step Charging:** Optimized multi-stage process ensures full charge, cell balancing, and long-term battery health.
- • **Automated Battery Testing:** Continuous pre- and post-charge diagnostics alert you to potential battery issues before they become problems.

## Overview

The OptiMATE Lithium 4s 0.8A TM-471 is a premium 12.8V sealed lithium battery charger and maintainer designed specifically for LiFePO4 and similar chemistries. Featuring an 8-step charging cycle, integrated BMS wake-up mode, and continuous battery diagnostics, it ensures safe, efficient charging and extends battery life. Ideal for professionals and enthusiasts who demand reliable starts and long-term battery health.

## 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

Review: A no-brainer choice for accurate charging and automated testing reassurance - I also have the larger 5A Optimate lithium charger, and this one does just as well, albeit a tad slower on larger batteries due to the lower current rating - less expensive but certainly no less capable! Like all the Tecmate-Optimates, you can connect and walk away without setting anything knowing that you'll get the absolute best charge safely. Not often considered compared to other chargers is all the pre and post charge testing that gets done on a continuous basis, specific to the lithium chemistry. Something that lead-acid based chargers don't do properly with lithium. Close, but no cigar. Note that "walk away" does NOT mean leave for work or go on vacation. NO battery of any chemistry under major charge should be left unattended. Having said that, while I own and have seen the similar looking, lead-acid based "Optimate 2" do an OK job on charging lithiums due to it's overall simplicity, the lithium specific TM471 is a far better charger than the Optimate 2 for this purpose. You get lithium-specific voltage tracking, testing, low-voltage recovery, AND cell-balancing pulses near the end of charge you don't get with the lead-acid based Optimate 2. All voltages tracked accurately with my Fluke 87V monitoring the charge process, just like all my other Optimates. That's why I own more than one. :) The extensive post-charge testing (if you ALLOW it to actually do a 12 hour long-term test) can give you an indication of problems long before bike issues leave you stranded. I'm a battery geek and can quickly see through hype. No hype here. It is so refreshing to actually see a product do exactly what they say it does, and openly discuss it in the manual.
Review: Good product - Put a lithium battery in my Kawasaki Mule; big difference in starting. Bought this to make sure it starts every time, no matter how cold or how long it has been sitting. Solid product that protects your battery investment.

## 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 Amps |
| Best Sellers Rank | #43,631 in Automotive ( See Top 100 in Automotive ) #273 in Battery Chargers |
| Brand | OptiMate |
| Customer Reviews | 4.7 4.7 out of 5 stars (743) |
| Date First Available | November 11, 2014 |
| Exterior | Machined |
| Is Discontinued By Manufacturer | No |
| Item Weight | 1.57 pounds |
| Item model number | TM-471 |
| Manufacturer | OptiMate |
| Manufacturer Part Number | TM-471 |
| Model | Optimate |
| Product Dimensions | 8 x 6 x 3 inches |
| Voltage | 240 Volts |
| Wattage | 15.00 |

## Product Details

- **Brand:** OptiMate
- **Color:** Black, Blue, Red, Silver
- **Output Voltage:** 12 Volts (DC)
- **Product Dimensions:** 6"D x 8"W x 3"H
- **Specification Met:** CEC

## Images

![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)

## 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

## Customer Reviews

### ⭐⭐⭐⭐⭐ A no-brainer choice for accurate charging and automated testing reassurance
*by I***C on January 23, 2015*

I also have the larger 5A Optimate lithium charger, and this one does just as well, albeit a tad slower on larger batteries due to the lower current rating - less expensive but certainly no less capable! Like all the Tecmate-Optimates, you can connect and walk away without setting anything knowing that you'll get the absolute best charge safely. Not often considered compared to other chargers is all the pre and post charge testing that gets done on a continuous basis, specific to the lithium chemistry. Something that lead-acid based chargers don't do properly with lithium. Close, but no cigar. Note that "walk away" does NOT mean leave for work or go on vacation. NO battery of any chemistry under major charge should be left unattended. Having said that, while I own and have seen the similar looking, lead-acid based "Optimate 2" do an OK job on charging lithiums due to it's overall simplicity, the lithium specific TM471 is a far better charger than the Optimate 2 for this purpose. You get lithium-specific voltage tracking, testing, low-voltage recovery, AND cell-balancing pulses near the end of charge you don't get with the lead-acid based Optimate 2. All voltages tracked accurately with my Fluke 87V monitoring the charge process, just like all my other Optimates. That's why I own more than one. :) The extensive post-charge testing (if you ALLOW it to actually do a 12 hour long-term test) can give you an indication of problems long before bike issues leave you stranded. I'm a battery geek and can quickly see through hype. No hype here. It is so refreshing to actually see a product do exactly what they say it does, and openly discuss it in the manual.

### ⭐⭐⭐⭐⭐ Good product
*by A***R on May 19, 2025*

Put a lithium battery in my Kawasaki Mule; big difference in starting. Bought this to make sure it starts every time, no matter how cold or how long it has been sitting. Solid product that protects your battery investment.

### ⭐⭐⭐⭐⭐ Flawless connect and forget charger at a great price
*by M***D on April 30, 2022*

Charger saved the EarthX ETX680 on my Sportcruiser airplane. It was discharged to 4.1 volts and several attempts to recharge it using a couple of different EarthX approved trickle chargers failed. I tried the EarthX recommended approach of momentarily hooking a good 12 volt battery in parallel with the trickle chargers to no avail and had resigned myself to having to replace the battery. After reading the reviews, I ordered the Optimate 4s .8A charger, which was received the next morning. I love this charger. It's totally automatic. Just connect and it interfaces with the built in BMS protection circuitry on the battery and goes into Save mode if the battery is more than 50% discharged. A light tells you whether it is in Save mode, charging, or fully charged. Unfortunately, the lights are not labeled, so I used my label maker to mark them, which is no big deal. This charger just works!

## 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

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*Product available on Desertcart Senegal*
*Store origin: SN*
*Last updated: 2026-03-02*