OptiMate Solar DUO 5A controller

MSRP $61.95

6-step 12V / 12.8V sealed solar charge controller & battery monitor

OptiMate Solar DUO, the smart 5 Amp solar controller that safely charges all types of 12V batteries – fully automatic ‘connect & forget’ technology!

Works with 12V polycrystalline or mono-crystalline solar panels, with rated output from 10W to 60W.  
Solar Panel specifications  
Charges 12V lead-acid + 12.8V / 13.2V lithium batteries.
The smart charge controller automatically adjusts charge according to battery type and condition – Connect to the battery and the OptiMate Solar DUO controller does the rest, no supervision required!
The fully automatic multi-step program brings the battery safely to full charge and continues to maintain the battery daily – Charger by day!
 Battery’s state of charge is displayed on the LED panel 24-7 Monitor by night!
The controller kit includes premium quality components 1) OptiMate Solar DUO controller 2) O-27 SAE polarity converter 3) O-01 battery lead 4) O-04 battery clips – for the complete solar charging experience!
How to connect the controller to your solar panel and battery


More features:

Converts low solar energy to efficient pulse charge.

DAY: Charge & maintain. NIGHT: monitor charge level.

Safe to leave connected. Full electronic protection.
Saves your ‘dead’ battery from as low as 4V.
Efficient dual conversion.
Low power use.
Weatherproof! Rated for use down to -20°C / -4°F.

More about Solar:



Coming soon.

Check out our YouTube channel for all our video’s.


The OptiMate Solar DUO is suited for charging 12V lead acid and 12.8V / 13.2V Lithium (LifePO4 / LFP) batteries.

OptiMate Solar DUO can charge and maintain the following battery types:
STD: 12V ‘wet’ cell / refillable lead-acid battery. Liquid acid can leak out if battery is turned on its side.
AGM: 12V sealed lead-acid battery, acid is fully contained within the battery. A 12V AGM battery holds a higher charged voltage than
STD lead-acid batteries.
GEL: 12V GEL sealed lead-acid battery, acid is fully contained within the battery. A GEL battery holds similar charged voltages to AGM.
LFP: 12.8V / 13.2V sealed Lithium Ferrous Phospate battery. Lithium batteries contain no acid. A LFP battery holds a higher charged
voltage than AGM / GEL.
Important - OptiMate Solar DUO is suitable ONLY for 4 series cell Lithium Ferrous Phosphate or Lithium Iron Phosphate batteries. DO
NOT ATTEMPT TO CHARGE any other type of Lithium battery

1. Solar panel cable
2. Controller input
3. Controller output cable
4a. O-01 Permanent battery lead
4b. O-04 Battery clips 5. Battery

This will also be a video with the upcoming DUO solars

MONITOR MODE - When the solar panel stops delivering power (sun has gone down in the evening or cloud covers sun) the
OptiMate Solar DUO controller changes to BATTERY MONITOR mode and will now indicate battery charge level every 3 seconds.
LED 2, 3, 4 or 5 indicate battery charge level.

CHARGE MODE - LED #1 lights if the solar panel can deliver charge. LED #1 flashes when charge current is delivered to the
battery. Speed of flashing corresponds to current delivered i.e. fast means high current, slow means low current (cloudy
conditions or battery is not accepting high current).
LED 2, 3, 4 or 5 indicate charge progress whilst CHARGE LED #1 is flashing. If no battery is connected only LED #1 turns on.

If the battery is sufficiently charged, LED #4 or 5 will immediately light together with LED #1 (flashing).

If the battery needs further charging LED #2 or LED #3 will light together with LED #1 (flashing).


SKU: TM522-D Category:


INCLUDED: Weatherproof battery lead, standard battery clip set, OptiMate Solar DUO controller & SAE 2-pin connector


MSRP = Manufacturer Recommended Retail Pricing is displayed above. (Currency selector > top right).
Price in EURO and GBP include VAT of 20%. VAT in your region may differ. Price in USD and CAD do not include sales tax.

TecMate do not sell product directly to the consumer. Find your nearest retailer by selecting the appropriate model below.

OptiMATE Solar DUO controller

OptiMATE Solar DUO controller

OptiMATE Solar DUO controller

OptiMATE Solar DUO controller




Saves flat batteries from as low as 4V with its unique pulse action.
Fastest charge is delivered as ‘smart charge’ control selects pulse or continuous charge according to sunlight strength.
Intelligent maintenance continues the next day if battery retained charge overnight, otherwise the program reverts to OPTIMIZE step.


Battery condition is displayed every 3 seconds. Ready indication for STD, hi-performance AGM and lithium LFP batteries. Draws less than 0.5mA during monitor mode.
Automatically switches to CHARGE when solar power is sufficient.


The OptiMate DUO charger-monitor controller is separate to the solar panel and can be placed close to the vehicle or battery so that charge and maintenance progress can be easily followed. The solar panel must be mounted and angled to receive direct sunlight. The reach / distance between battery and panel is 315cm / 124″. To extend, use OptiMate Cable Extenders O-03, O-13 or O-23 and insert between the solar panel and the OptiMate DUO charge-monitor controller.


OptiMate Charge controller:

CHARGING AMPS: A from 10-60W panel (max. average current), 3-5A pulse current

USE: Indoor / Outdoor  (lowest temperature: -4°F / -20°C).

SAVE: Low Volt Start of 4V

IDEAL FOR: STD, AGM & GEL 12V batteries from 2 – 240Ah and Lithium LFP 12.8V / 13.2V batteries

INPUT: 15 – 22V

STYLE: Weatherproof charge controller case.

INCLUDED: Weatherproof battery lead, standard battery clip set & SAE 2-pin connector

SAFE: No 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.

WARRANTY: 3-year limited replacement warranty.