Skip to content

OptiMATE 2, TM-421, 4-step 12V 0.8A Battery Charger-Maintainer

SKU TM-421
by TecMate
Original price $72.86 - Original price $72.86
Original price
$72.86 - $72.86
Current price $72.86
in stock

Keep your 12V battery charged and ready to go with OptiMATE 2. This 4-step battery charger-maintainer is designed to extend the life of your battery by charging and maintaining it in a safe and efficient way. With a charging rate of 0.8 amps, the OptiMATE 2 is powerful enough to charge your battery quickly, but gentle enough to avoid damaging it.

The OptiMATE 2 features a unique 4-step charging cycle that maximizes the life of your battery. During the first step, the charger will analyze your battery and determine its condition. Next, the charger will begin a bulk charge to quickly recharge your battery to its optimal level. The third step is a maintenance charge, which maintains the battery at its optimal level. Finally, the charger will enter a standby mode until it detects a drop in voltage, at which point it will automatically begin another charging cycle.

Delivery time / Order Processing & Shipping Times

Rise ships manufacturer direct. We work hard so you receive your product(s) as quickly as possible. Learn more about our order processing & shipping times here.

Carbon-neutral shipping with Shopify Planet
Carbon-neutral shipping on all orders
shipping emissions removed
That's like...
miles driven by an average gasoline-powered car
We fund innovations in...
Direct Air Capture
Bio Oil


Unique FeaturesSenses the battery condition, recharges and then keeps the battery 100% ready. This will extend life and improves performance of a 12V battery.
IDeal ForAGM, GEL & STD 12V batteries from 3 – 96Ah
Charging Amps0.8A (constant current)
Charging VoltsNominal: 12V range: 2V – 14.4V
OperationFully automatic


Warranty3-year limited replacement warranty.
UseIndoor (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.
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.


Can I use optimate 2 to maintain my car battery?Yes, the OptiMate 2 can maintain your classic/modern (STD, AGM, GEL) car battery.
Can I leave my Optimate 2 permanently connected on a generator?Yes, there is no risk to leave the OptiMate 2 connected while cranking the engine. The interactive charge program is ideal for a battery that intermittently delivers power.
Do I need to make a selection for my type of lead-acid battery?No, the OptiMate 2 is a fully automatic battery charger which can be used for 12V lead-acid (STD, AGM and GEL) batteries.
What type and size batteries does Optimate 2 charge?The OptiMate 2 can be used for 12V lead-acid (STD, AGM and GEL) batteries, used for engine start & deep cycle applications. It can charge batteries from 3 – 96Ah
How fast does Optimate 2 recharge batteries?The time required for the OptiMate 2 to complete a charge on a flat but otherwise undamaged battery is roughly equal to the battery’s Ah rating, so a 10Ah battery should take no more than about 10 hours to progress to Step 4. Deep-discharged batteries may take significantly longer.


Interested in Deals and New Products?

Keep up-to-date on deals and new home building products that benefit your health, your wealth, and the planet delivered right to your inbox.

Skip to content