---
product_id: 11838314
title: "OptiMATE 2, TM-421, 4-step 12V 0.8A sealed battery charger & maintainer"
brand: "tecmate"
price: "21166 som"
currency: KGS
in_stock: true
url: https://www.desertcart.kg/products/11838314-optimate-2-tm-421-4-step-12v-0-8a-sealed
store_origin: KG
region: Kyrgyzstan
---

# 0.8A constant charging current 12V battery compatibility Weatherproof design for all conditions OptiMATE 2, TM-421, 4-step 12V 0.8A sealed battery charger & maintainer

**Brand:** tecmate
**Price:** 21166 som
**Availability:** ✅ In Stock

## Summary

> 🔌 Keep your ride charged and ready—because your battery deserves VIP treatment!

## Quick Answers

- **What is this?** OptiMATE 2, TM-421, 4-step 12V 0.8A sealed battery charger & maintainer by tecmate
- **How much does it cost?** 21166 som with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.kg](https://www.desertcart.kg/products/11838314-optimate-2-tm-421-4-step-12v-0-8a-sealed)

## 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

- • **Global Ready & Compact:** Works worldwide (100-240V), with a sleek, wall-mountable design and long 6ft leads for flexible installation.
- • **Effortless Battery Care:** Connect & forget automatic maintenance keeps your hybrid or start/stop vehicle battery optimized without hassle.
- • **Built for Any Environment:** Weatherproof casing and leads ensure dependable indoor/outdoor use even in freezing temperatures down to -20°C (-4°F).
- • **Universal 12V Compatibility:** Supports STD, AGM, EFB & GEL batteries from 3 to 96Ah—perfect for a wide range of modern vehicles.
- • **Power-Saving Low Volt Rescue:** Revives deeply discharged batteries down to 2V, extending battery life and reliability.

## Overview

The OptiMATE 2 TM-421 is a compact, fully sealed 12V battery charger and maintainer delivering a steady 0.8A charge. Designed for modern hybrid and Eco Start/Stop vehicles, it supports multiple battery types (STD, AGM, EFB, GEL) from 3 to 96Ah. Its weatherproof design and global voltage compatibility make it ideal for year-round, worldwide use, ensuring your battery stays healthy and ready no matter the conditions.

## Description

Full description not available

## Features

- MAINTAIN BATTERY - OptiMATE 2 ‘connect & forget’ automatic charger-maintainer that optimizes the performance of modern hybrid cars & vehicles with 12V Eco Start/Stop batteries.
- SAVE POWER - Advanced 12V battery maintenance. Low Volt Save (from 2V); CHARGING AMPS: 0.8A (constant current).
- MODEL -TM-421 IDEAL FOR: STD, AGM, EFB & GEL 12V batteries from 3 – 96Ah. Weatherproof battery lead & standard battery clip set included.
- USE - Indoor / Outdoor (lowest temperature: -4°F / -20°C); STYLE: Weatherproof case with wall mounts, with 6ft / 180cm AC supply lead and 6ft / 180cm charge lead ending in SAE connector.
- INPUT - Global (100-240V 50-60Hz), high (CEC listed), fully sealed.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | TecMate |
| Brand | Tecmate |
| Model | TM-421 |
| Item Weight | 12.2 ounces |
| Product Dimensions | 8.25 x 6.5 x 2.5 inches |
| Item model number | TM-421 |
| Is Discontinued By Manufacturer | No |
| Exterior | Machined |
| Manufacturer Part Number | TM422 |
| Voltage | 12 Volts |

## Product Details

- **Brand:** Tecmate
- **Product Dimensions:** 6.5"D x 8.25"W x 2.5"H
- **Item Weight:** 12.16 ounces
- **Output Voltage:** 12 Volts
- **Specification Met:** sae

## Images

![OptiMATE 2, TM-421, 4-step 12V 0.8A sealed battery charger & maintainer - Image 1](https://m.media-amazon.com/images/I/81MUIHqEjyL.jpg)

## Available Options

This product comes in different **Style** options.

## Questions & Answers

**Q: What is the difference between the 12.8V Duo versus the regular one?**
A: The 12.8 V Dou is suitable for lithium-ion batteries as well as lead acid batteries.

**Q: What is the difference between all the chargers optimate offers? i want to charge an agm battery, prius 2001 car. thanks.**
A: The one I have is a maintenance charger it charges and maintains battery health and longlife

**Q: Where is this made?**
A: The company which is Tecmate was founded in Belgium in 1994. They manufacture chargers for many brand names, however I'm not sure where they are actually made!

**Q: Will this charge a dead 12v auto battery?  Or is it used just to maintain a battery?**
A: *Perfect for charge and maintenance of all 12V lead-acid (STD, AGM, GEL) and 12V LiFePO4 'Lithium'.

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**Shop now:** [https://www.desertcart.kg/products/11838314-optimate-2-tm-421-4-step-12v-0-8a-sealed](https://www.desertcart.kg/products/11838314-optimate-2-tm-421-4-step-12v-0-8a-sealed)

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*Product available on Desertcart Kyrgyzstan*
*Store origin: KG*
*Last updated: 2026-07-15*