What is the difference between the 12.8V Duo versus the regular one?

The 12.8 V Dou is suitable for lithium-ion batteries as well as lead acid batteries.

What is the difference between all the chargers optimate offers? i want to charge an agm battery, prius 2001 car. thanks.

The one I have is a maintenance charger it charges and maintains battery health and longlife

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!

Will this charge a dead 12v auto battery? Or is it used just to maintain a battery?

*Perfect for charge and maintenance of all 12V lead-acid (STD, AGM, GEL) and 12V LiFePO4 'Lithium'.

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Tecmate TecMate Optimate 1 Duo, TM-409, 4-Step 12V / 12.8V 0.6A Battery Charger & maintainer

Tecmate TecMate Optimate 1 Duo, TM-409, 4-Step 12V / 12.8V 0.6A Battery Charger & maintainer

Product ID: 596410564

Details

Brand
Tecmate
Item Weight
553 g
Output Voltage
12 Volts
Product Dimensions
9.5D x 6W x
Specification Met
CEC

⚡4-step microprocessor charging

🔋Dual lithium & lead-acid support

🛡️24/7 battery maintenance & protection

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39011 som

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Description

🔌 Power up smarter, not harder — never let your battery hold you back!

BATTERY RESURRECTION POWER - Revives stubborn batteries others give up on—if OptiMate can’t save it, nothing can.
DURABLE DUSTPROOF DESIGN - Compact, rugged casing built for indoor use keeps your charger safe and ready year-round.
CONNECT FORGET AUTOMATION - Fully automatic 4-step charging means zero hassle and zero battery worries.
TRUSTED BY INDUSTRY LEADERS - Endorsed by Honda, Yamaha, KTM & top battery brands for unmatched reliability.
UNIVERSAL BATTERY COMPATIBILITY - Seamlessly charges 12V lead-acid and 12.8V lithium batteries—one charger for all your power needs.

The Tecmate Optimate 1 Duo TM-409 is a compact, fully automatic 4-step battery charger and maintainer designed for 12V lead-acid and 12.8V lithium batteries. It features microprocessor-controlled charging that optimizes battery health, extends battery life with continuous 24/7 maintenance, and can revive batteries that other chargers fail to save. Trusted by major motorcycle brands and built with a durable dustproof case, it’s the ultimate smart charger for professionals who demand reliability and convenience.

Specifications

ASIN	B076JSXGBQ
Amperage	0.6 Amps
Best Sellers Rank	#312,224 in Car & Motorbike ( See Top 100 in Car & Motorbike ) #1,271 in Battery Tools
Box Contents	Battery Charger
Brand	Tecmate
Brand Name	Tecmate
Connector Type Used on Cable	Battery Clips and Harness Lead with Fuse
Country of Origin	USA
Current Rating	0.6 Amps
Customer Reviews	4.8 out of 5 stars 322 Reviews
Global Trade Identification Number	05425006145657
Input Voltage	240 Volts
Item Dimensions D x W x H	9.5D x 6W x 3.8H Centimeters
Item Type Name	OptiMATE 1 DUO, TM-409, 4-step 12V / 12.8V 0.6A battery charger & maintainer
Item Weight	1.22 Pounds
Item Weight Unit of Measure	1.22 Pounds
Manufacturer	TecMate
Manufacturer Part Number	TM-409
Model Number	TM-409
Number of Ports	1
Output Voltage	12 Volts
Product Dimensions	9.5D x 6W x 3.8H Centimeters
Specification Met	CEC
UPC	644978440354
Unit Count	1.0 Count

Reviews

S**P

11.02.2026

L**O

11.09.2019

E**T

7.02.2026

A**R

16.09.2022

C**2

14.12.2025

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39011 som

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In stock

Sold byAmazon KyrgyzstanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Kyrgyzstan.

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