THANK YOU FOR CHOOSING THE THUNDER DC TO DC BATTERY CHARGER For your personal safety, read, understand and follow the information provided in this instruction manual.
CONTENTS 3. Features & Benefits 4. Important Safety Warnings 5. Installation 6. Specifications 7. Integrated LED Diagram 8. Wiring Diagram 9. 8 Stage Charging Mode 10. Solar Charging Mode 11.
FEATURES & BENEFITS • Heavy duty aluminium case • Easy to read Bluetooth LCD screen • 12-24V system input (12V output) • 0-90°C Operating temperature • IP67 • MST (Modular Sense Technology) • Microchip monitoring and control • Fully automatic high frequency multi stage charging • Pulse mode technology that reduces oxidation and minimises temperature equating to longer battery life • Unit will automatically change charge rate mapping for GEL, AGM and standard Lead Acid • Lithium battery
IMPORTANT SAFETY WARNINGS FOR AUTOMOTIVE 12/24V USE ONLY, NOT TO BE USED WITH DRY CELL BATTERIES. To avoid any personal injury, please read the following safety instructions. This battery charger is not intended for use by young children or infirm persons without supervision. 1. During the charging process, do not use a naked flame near a battery. Batteries generate explosive gasses during the charging process that may explode. 2. Never smoke or light cigarettes near a battery. 3.
INSTALLATION WE RECOMMEND INSTALLATION BY A QUALIFIED AUTO ELECTRICIAN • Secure the charger using the mounting tabs on the unit. • Connect the input blue wire on the rear of the charger using suitable cable to the main starting battery of the vehicle (see specification table on page 8). It is recommended to place a circuit breaker (30A minimum, not supplied) in the main positive lead as close as possible to the starting battery. • Connect the auxiliary battery to the output red wire of the charger.
SPECIFICATIONS SPECIFICATIONS 6 RECOMMENDED MINIMUM CABLE LENGTH / TWIN CORE OUTPUT 20A 0 - 10 METRES 6 B&S/6AWG* amperage control INPUT FUSE RATING Minimum 30A OVER 10 METRES Consult an auto electrician OUTPUT FUSE RATING Minimum 30A VEHICLE INPUT VOLTAGE RANGE 12.2V - 26V If voltage increases over 26V the Thunder DC-DC will shut off, reset will be needed MIN AND MAXIMUM CHARGING VOLTAGES 13.1V - 15.2V Stops charging when alternator or vehicle battery below 12.
INTEGRATED LCD DIAGRAM The Thunder 20A DC-DC now comes with an LCD interface screen, giving you better visibility on the health of your batteries charging inputs. While your vehicle is charging, the LCD screen will show in the vehicle car charging screen allowing you to see the main and auxiliary battery voltages, auxiliary battery percentage and how much current is flowing into the battery. If Lithium mode is used it will also show this as well.
WIRING DIAGRAM Unit Wiring MST (Modular Sense Technology) Blue: +12V/24V Start Battery The Thunder DC-DC now has MST (Modular sense technology) that allows multiple Thunder DC-DC's to be added together to increase the amperage output. Red: +12V Auxiliary Battery The Thunder DC-DC automatically senses the addition of an extra unit fitted and synchronises the charge algorithm to work as one unit. Black: Common Ground Yellow: Solar Positive Input You can add as many units as you like.
8 STAGE CHARGING MODE 1. Stage 1 - Battery Check: Pre-charge 5 sec, switches into Stage 2 (12V). 2. Stage 2 - Soft Start: Less than 2A or 10 sec charging, switches into Stage 3. 3. Stage 3 - Constant Current Charging (Bulk Charge): Max 20A, switches to Stage 4 when the battery voltage charges to 14.5V. NOTE: Voltage varies to maintain a constant current until 14.5V is reached. 4. Stage 4 - Constant Voltage Charging (Absorption Charge): Constant 14.
SOLAR CHARGING MODE 1. Stage 1: Direct solar energy to charge the battery until the battery voltage reaches 14.5V, switches to stage 2. hen the auxiliary battery reaches 80% the Thunder DC-DC will automatically start to W charge the main and auxiliary batteries. 2. Stage 2: Overpressure pulse charging, when the battery voltage is lower than 14.5V, charger pulses for 1 sec on and 1 sec off. This will occur for 2 hours, or until 14.5V average is reached whichever comes first.
WARRANTY TERMS & CONDITIONS When you acquire or fit a Thunder product you have the peace of mind in knowing that it is backed by a comprehensive 12 month warranty against defects in materials and workmanship. The Thunder warranty is provided in addition to any rights you may have under the Australian Consumer Law. All claims under this warranty should be made by returning the product to the place of purchase at your expense, with the detail of the fault, proof of purchase and fitment details.
