What is a DC-DC Charger?Ī DC-DC charger (also known as a battery-to-battery charger, or b2b charger) is a device that takes the input from your alternator/starting battery and uses it to charge your aux battery.ĭC-DC chargers are able to charge just about any type of battery (including lithium), they work with modern variable voltage alternators, and they employ multi-stage charging to fully and properly charge your battery bank.ĭC-DC chargers come in two varieties: single input and dual input. We’ll go over both in this post, but in general we recommend that most people get a DC-DC charger for their rigs. There are two kinds of devices for this: DC-DC chargers and Battery Isolators. So you need a device that allows you to charge a second (auxiliary) battery from your van’s alternator without draining your starting battery when the engine isn’t running. But paralleling your batteries means that when the engine’s off, your electrical loads will also drain the starting battery – not good if you want to start your van in the morning! You can easily use your alternator to charge your second (auxiliary) battery simply by connecting the positive terminals of both batteries so that they’re in parallel. An alternator is a device that converts the mechanical energy from your van’s engine into electricity, and uses that electricity to power electronics in your van and charge your starting battery. How To Charge Your Van’s Batteries While DrivingĮvery vehicle has an alternator. Electricity on the Road in Any Conditions!.Installing a DC-DC Charger or Battery Isolator in Your Van.What Size DC-DC Charger or Battery Isolator Do You Need?.How To Charge Your Van's Batteries While Driving.Life on the road means a fair amount of driving, and having the ability to charge your batteries while driving is essential for vanlife. And if you’re on a tight budget, you can even skip the solar and still have basic electricity in your DIY van build. That’s why we highly recommend setting up your campervan electrical system to charge your batteries from your van’s alternator while you’re driving.Ĭharging from your alternator is a great way to supplement your solar panels and make sure your batteries stay topped off no matter the weather. Even with our larger 400W system we’ve run into problems with battery drain after about 4-5 days in poor sunlight conditions. But sometimes solar just isn’t enough – especially if your budget doesn’t allow you to throw down for a huge multi-panel system.Ĭloudy weather, wildfire smoke, and camping in shady forests can limit the amount of sunlight getting to your panels, leaving you scrambling for adequate sun to recharge your depleting batteries. Many vandwellers install solar power in their rigs. It means you can live completely off the grid with lights, a fridge, phones and computers – all while not worrying about electric bills or power outages. It does not store any personal data.Having electricity in your van is just plain awesome. The cookie is set by the GDPR Cookie Consent plugin and is used to store whether or not user has consented to the use of cookies. It allows the website owner to implement or change the website's content in real-time. This cookie is used by the website's WordPress theme. It works only in coordination with the primary cookie. Records the default button state of the corresponding category & the status of CCPA. The cookie is used to store the user consent for the cookies in the category "Performance". This cookie is set by GDPR Cookie Consent plugin. The cookie is used to store the user consent for the cookies in the category "Other. ![]() ![]() ![]() The cookies is used to store the user consent for the cookies in the category "Necessary". The cookie is set by GDPR cookie consent to record the user consent for the cookies in the category "Functional". The cookie is used to store the user consent for the cookies in the category "Analytics". Set by the GDPR Cookie Consent plugin, this cookie is used to record the user consent for the cookies in the "Advertisement" category. These cookies ensure basic functionalities and security features of the website, anonymously. Necessary cookies are absolutely essential for the website to function properly.
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