When your smart alternator won't fully charge lithium batteries, this DC to DC charger regulates voltage with buck boost control. Its 100 amp output keeps charging consistent, so batteries reach a higher state of charge instead of dropping out.
Modern alternators often drop voltage once the starter battery is full, leaving auxiliary batteries undercharged or not charging at all. This unit uses a buck-boost design to regulate input from 10V to 30V into a stable output within a 10V to 30V range. Batteries continue charging while driving instead of stalling at partial state of charge.
Standard converters struggle when input voltage rises or falls outside a narrow range. This unit can both step voltage up and down to maintain a controlled output, keeping charging consistent regardless of alternator fluctuation. Connected systems receive stable power instead of cycling or dropping out.
Lower-output chargers slow down charging and limit system performance in larger setups. This unit delivers up to 100 amps at 12V and 50 amps at 24V, supporting higher-capacity battery banks and reducing charge time. Batteries recover faster instead of requiring extended drive time.
Fixed-output chargers can't adapt to different battery chemistries or system limits. This unit allows configuration of output voltage and current limits through a PC application, letting you match charging behavior to your setup. Charging stays aligned with battery requirements instead of forcing a fixed profile.
Improper wiring or always-on chargers can drain the starting battery when the engine is off. This unit includes engine running detection that activates charging only when alternator power is available. The starting battery stays protected instead of being unintentionally discharged.
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Hi, everybody. Andy here with etrailer. Let's take a quick look at this Victron Buck Boost DC to DC 12 volt and 24 volt RV converter. Now this is designed to make sure that your batteries get properly charged while you're driving. Even if your vehicle has a modern smart alternator, it doesn't always put out steady power. This is going to regulate that voltage that's coming from your alternator, so your batteries are gonna charge safely and efficiently instead of inconsistently.
One of the standout features is its buck boost capability, which basically means that it can both increase or decrease voltage as needed. So no matter what your vehicle is putting out, anywhere between 10 and 30 volts, this adjusts things to deliver a consistent charge to your batteries. This is also pretty powerful with up to 100 amps of charging at 12 volts, or 50 amps at 24 volts. That makes it a good fit for larger battery banks like what you find in RVs, vans, or off-grid setups where faster charging really matters. Another nice thing is that this works with both 12 and 24 volts systems, so this is flexible if you're running a mixed setup or plan to upgrade later.
Plus, you can fine tune how this behaves. Things like charging profiles and current limits can be programmed from a computer to match your specific batteries. This also has built in engine detection, which means it only turns on when your alternator is actively producing power. That's gonna prevent it from draining your starting battery when the engine is off. This weighs roughly about nine pounds.
It's got some heft to it. Looking at the overall height, about 11 and five 16ths inches tall. The overall width, about six and three eights inches wide. And then the overall depth, about three and three quarters inches deep. It includes everything that you see here.
Overall, this is going to be a smart, high output DC to DC charger. That's gonna keep your battery system running consistently, safely and efficiently, especially in setups where standard charging just isn't reliable. If you have any other questions, don't hesitate to reach out to us. One final note, if you need help with installation, take a look at this product page. Underneath the photo section, we have a link that will take you to our installer locator. Answer the questions that it has for you, and that locator will find an installer in your area that etrailer has partnered with to take care of the installation for you. Well again, my name is Andy. Thank you for joining me.
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