Trolltek™ DC/DC Lithium Battery Chargers

DESIGNED FOR LITHIUM

The Trolltek™ range of DC to DC Lithium Battery Chargers is designed for onboard marine installations, delivering reliable battery charging in demanding saltwater environments. Each unit is waterproof, dustproof and shockproof, helping it withstand the harsh conditions experienced on boats and marine vessels.

An onboard DC/DC charger allows your lithium batteries to recharge while the vessel is underway, making efficient use of available charging power while the engine is running. The charger can also be triggered when solar or AC charging sources are connected, helping simplify battery management and keep your lithium batteries ready for use.

Trolltek™ chargers are supplied pre-configured for use with Trolltek™ Lithium Batteries, with charging voltages preset to optimal levels for simple and reliable operation. They are also compatible with many other leading lithium battery brands. Refer to the charging specifications below to confirm suitability for your application.

Multi-Stage Lithium Battery Charging

Multi-stage charging helps maximise battery performance and service life by automatically managing the charging process as the battery approaches full capacity.

Bulk Charge Stage
The charger supplies a constant current until the predetermined voltage is reached, typically restoring approximately 80% of the battery's capacity in the shortest possible time.

Absorption Charge Stage
The charger then adjusts the charging rate to safely bring the battery up to 100% capacity while ensuring maximum charge absorption.

Automatic & Safe Charging

Trolltek™ DC/DC chargers feature intelligent, automatic charging technology designed to prevent overcharging and maintain optimal battery performance. They are suitable for permanent connection to your lithium battery, providing convenient, automatic charging whenever a suitable power source is available.

HOW TO INCORPORATE A DC/DC CHARGER INTO YOUR INSTALLATION

Select a Trolltek™ DC/DC charger to match the Lithium battery voltage, for example, if running a 36V Lithium battery, select TTKCH3 that is designed to charge 36V batteries.

Connect power to the input cables (typically 12V) and connect the lithium battery to the output cables ready to charge.

The DC/DC charger won't turn on until a +12V signal is supplied to the yellow input trigger wire. If the trigger wire function isn't required, connect the yellow wire to the red input wire and the DC/DC will be permanently activated.

Example, if incorporating the Trolltek™ DC/DC charger into a boat with trolling motor setup, users would typically take the input 12V power from the boat's primary starting battery as this is connected to the outboard. As the DC/DC draws power, the outboard should replenish power from the outboard charging system.

Note, the DC/DC does not monitor the supply battery voltage so has potential to draw down the starting battery voltage. To overcome this possible scenario, users can connect the yellow trigger wire to the boat engine run signal so the DC/DC is only running when the outboard is running. This works well assuming the outboard can deliver 438W of power (~36A @ 12V). Some outboards won't be able to deliver this power when the engine is idling so there is still a risk of flattening the starting battery.

The ultimate solution is to incorporate the Trolltek™ Programmable Voltage Sensing Relay into the design. The PVSR monitors the starting battery voltage and only activates the relay to deliver power to the DC/DC charger under optimal conditions that the user programs. For example, if the starting battery voltage increases to 13.2V or greater for 30 seconds, the PVRS can be programmed to automatically close its relay contacts which powers the DC/DC charger. However, if the starting battery voltage drops to 12.3V for a period of 5mins, the PVSR is programmed to open the relay contacts and turn the DC/DC charger off. Incorporation of the PVSR eliminates the potential for the DC/DC charger accidently drawing down the starting battery whilst maximising the run time for the lithium battery charger and accommodating for periods where the boat might be idling.

The following trolling motor configuration resource may assist some customers.

Find our Manual here

SPECIFICATIONS