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OptiMATE 5 6V/12V - 6V 4A / 12V 3A, Model TM-321, Silver Series High Performance Battery Charger & Maintainer for Deep Cycle Batteries

SKU TM-321
by TecMate
Original price $113.36 - Original price $113.36
Original price
$113.36 - $113.36
Current price $113.36
in stock

The OptiMATE 5 TM-321 is a versatile battery charger designed for those who need to maintain multiple battery types. With its automatic maintenance program, this charger keeps your batteries in excellent condition, ensuring they are always ready to go when you need them. This rugged and durable charger is built to last, making it an ideal choice for those looking for a reliable and long-lasting charging solution.

Capable of charging both 6V and 12V deep cycle batteries, the OptiMATE 5 TM-321 delivers a powerful charge with a charging output of 6V 4A / 12V 3A. Its advanced charging technology provides a safe and thorough charge, which not only restores your battery's charge quickly and efficiently but also extends its lifespan. Whether you need to charge your motorcycle battery or maintain the battery on your boat or RV, the OptiMATE 5 TM-321 is the perfect choice for all your charging needs.

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Unique FeaturesSAVE & CHARGE all 6V & 12V lead-acid batteries.
IDeal ForSTD, AGM, GEL, SLI & DEEP CYCLE 6 & 12V batteries from 3 – 120Ah (up to 160Ah for 6V).
Charging Amps4A (6V) / 3A (12V) (Ampmatic)
Charging Volts

6V range: 0.5V – 7.2V; 12V range: 8V (0.5V*) – 14.4V

*Voltage safety check. Will not charge if battery voltage does not match selected voltage. User must confirm it is a low volt 12V battery > press selection button for 3 seconds to confirm > then lowest charge voltage for 12V is reduced to 0.5V.

Warranty3-year limited replacement warranty.
UseIndoor / Outdoor  (lowest temperature: -4°F / -20°C).
InputGlobal (100-240V 50-60Hz), high efficiency (CEC listed).
StyleWeatherproof case with wall mounts, with 6ft / 180cm AC supply lead and 6ft / 180cm charge lead ending in SAE connector.
SaveLow Volt Start of 0.5V + 2 step desulphation recovery.
SafeNo risk of overcharging. Totally safe for vehicle electronics. Sparks suppressed. Safe for long-term battery maintenance. Automatic shut-down if short-circuited or battery disconnected.
IncludedWeatherproof battery lead & battery clip set.


Why does it 'Optimize' my battery?
The OPTIMIZE mode starts when the voltage has reached 7.2V / 14.4V for the first time during CHARGE mode.
How do I select the voltage?Selection of the 6V or 12V charge program is done by pushing the select touch button. Disconnect the charger from the battery and hold down the button for 3 seconds to switch the program.
Is the voltage charge selection safe?Yes, if the battery Voltage does not match the Voltage charge program, the OptiMate 5 6V/12V will not charge.
What type and size batteries does Optimate 5 charge?STD, AGM and GEL 12V lead-acid batteries used for engine start & deep cycle applications. (Link: Learn here about batteries, this will be at
For batteries from 12Ah to 192 Ah for 24-7 battery maintenance. Can recharge batteries up to 96Ah within 24hours.
How fast does optimate 5 recharge batteries?The time required for the OptiMate 5 to complete a charge on a flat but otherwise undamaged battery is roughly 1/4 of the battery’s Ah rating, so a 40Ah battery should take no more than about 10 hours to progress to Step 5. Deep-discharged batteries may take significantly longer.


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