---
product_id: 457735247
title: "TM391"
brand: "tecmate"
price: "BZ$1036"
currency: BZD
in_stock: true
category: "Tecmate"
url: https://belize.desertcart.com/products/457735247-tm391
store_origin: BZ
region: Belize
---

# 6A high current output 10-step advanced charging BMS wake-up & ultimate battery protection TM391

**Brand:** tecmate
**Price:** BZ$1036
**Availability:** ✅ In Stock

## Summary

> 🔋 Charge like a pro, power your future.

## Quick Answers

- **What is this?** TM391 by tecmate
- **How much does it cost?** BZ$1036 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [belize.desertcart.com](https://belize.desertcart.com/products/457735247-tm391)

## 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:** Seamlessly reactivates batteries with integrated Battery Management System safety.
- • **Power-Packed 6A Output:** Charge faster and smarter with industry-leading current for LiFePO4 batteries.
- • **Robust & Reliable Build:** Weatherproof design backed by a 3-year warranty—trusted by professionals.
- • **TUNE Mode for ECU Stability:** Maintain stable battery support during critical ECU programming sessions.
- • **10-Step Intelligent Charging:** Experience precision battery care that extends lifespan and revives tired cells.

## Overview

The Tecmate OptiMate Lithium 4s 6A TM391 is a cutting-edge 12.8V lithium battery charger and maintainer featuring a powerful 6A output, an advanced 10-step charging program, and smart BMS wake-up technology. Designed for high-performance LiFePO4 batteries, it ensures optimal battery health, supports ECU programming with TUNE mode, and comes with a durable, weatherproof design and a 3-year warranty.

## Description

Buy Tecmate OptiMate Lithium 4s 6A, TM391, 10-step 12.8V 6A Lithium Expert Battery Saving Charger & Maintainer, Blue/Green: Battery Chargers - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

## 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 A |
| Best Sellers Rank | #147,613 in Automotive ( See Top 100 in Automotive ) #615 in Battery Chargers |
| Brand | Tecmate |
| Built-In Media | Battery Charger, weatherproof battery lead & battery clip set |
| Color | ['Blue'] |
| Current Rating | 6 A |
| Customer Reviews | 4.8 out of 5 stars 44 Reviews |
| 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 Ports | 1 |
| Output Voltage | 12.8 volts_of_direct_current |
| Specification Met | ecu |
| Unit Count | 1 Count |
| Warranty Description | 3 YEAR LIMITED WARRANTY |

## Product Details

- **Brand:** Tecmate
- **Color:** ['Blue']
- **Item Weight:** 9.6 Ounces
- **Output Voltage:** 12.8 Volts (DC)
- **Specification Met:** ecu

## Images

![TM391 - Image 1](https://m.media-amazon.com/images/I/81HNmmJBZrL.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

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**Shop now:** [https://belize.desertcart.com/products/457735247-tm391](https://belize.desertcart.com/products/457735247-tm391)

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*Product available on Desertcart Belize*
*Store origin: BZ*
*Last updated: 2026-10-25*