However, the thought process of fitting your rig out with 4WD accessories or modifications can be daunting. Do you opt for a lift kit and wheels first? Do you install a snorkel or do you fit the interior out with the latest mods? There’s no point in having a fridge full of cold beers and food if you can’t keep it cold right? Thunder have two DC-DC models offering 20A and 40A power input.
What size DCDC model should I be using?
Battery charger size is based on the overall battery capacity you’re planning to install as well as what loads you would normally run when the battery charger is running.
When considering the size of the charger, it’s important to remember that the charging source will supply all of the DC loads first. Whatever is left over will charge the auxiliary battery.
Charge rates differ between vehicles depending what loads you have drawing off the auxiliary battery. The greater the load, the longer the charge time. For example if you have two fridges, a few LED lights, phones and laptops drawing off the battery you will find the DC-DC charger will almost always be charging.
Daily Driving Distance:
If you only drive short distances each day and have a large load drawing off the charger we recommend the 40A DCDC Charger. If you’re touring around on long trips and have minimal load drawing we recommend the 20A DCDC Charger.