Input Voltage: Even though a DC to DC charger will allow you to charge your DC batteries using DC current as the input, you still need to make sure that the voltage of your DC power supply is the same as supported by your DC charger. This is due to the reason that while some DC to DC charger may support 12 or 24 volts for input, others may work with 120-volt or even 240-volt DC current. Maximum Current: Apart from being compatible with your DC current power supply, a DC to DC charger also needs to be powerful enough for supporting fast charging speeds. This can be ensured by simply checking the maximum current rating of your charger. By going with a DC to DC charger that has a maximum current rating of up to 50 amps, you can expect much faster-charging speeds than one with just charging speeds of up to 25 amps or similar. Supported Battery Types: You should also check the supported battery types of your DC to DC charger to make sure that it can work with the batteries of your choice. Thankfully, almost all DC to DC chargers mention a list of supported battery types which can include options like AGM, gel, lead acid, Li-ion, calcium, and other types of batteries where any DC to DC charger which supports multiple types is going to be highly versatile and practical.
8 Best DC to DC Chargers
Best DC to DC Chargers Reviews 2023
1. Renogy DC to DC Charger
Renogy is one of the most popular mainstream brands of batteries and battery chargers that are generally quite practical thanks to the included features like you can see with its DC to DC charger given here. The Renogy DC to DC charger is present in the 1st position of this list since this is a great small and compact option for most. Considering the given form factor and size of this DC to DC charger, it supports a pretty high input voltage of up to 120 volts. And for the given price, its supported maximum current of up to 20 amps is to be expected. Thankfully, this DC to DC charger won’t disappoint in terms of its battery compatibility since you can use it to charge AGM, flooded, gel, and lithium ion batteries if needed. Renogy also includes a handy 1 year long warranty with this DC to DC charger for decent longevity. Best Features:
Works with an input voltage of 120 volts DC Outputs a maximum current of up to 20 amps during charging Compatible with multiple battery types including AGM, flooded, gel, lithium ion Comes included with a 1 year long warranty period
Pros:
Highly affordable and budget friendly DC to DC charger Quite small and compact in terms of its construction and design Works amazingly well with a wide range of battery types
Cons:
Not the most ideal DC to DC charger for heavy duty usage
2. Victron DC to DC Charger
Despite being one of the higher-end brands of premium battery and charging products, Victron Energy can still be a great pick for all those who want something highly durable and reliable. Victron Energy’s Orion DC to DC charger is present in the 2nd position of this listicle as this is the best option for long term usage given here. Starting with the basics, this DC to DC charger supports a standard input voltage of 24 volts. With this, you are able to charge DC batteries at a maximum current of up to 30 amps. Unfortunately, Victron Energy does not mention any details regarding the supported battery types of this charger which can be an issue for some. That being said, the Orion DC to DC charger from Victron Energy is still an amazing option for most thanks to its 5-year warranty period which is much longer than others. Best Features:
Works with an input voltage of 24 volts DC Outputs a maximum current of up to 30 amps during charging Comes included with a 5-year warranty period
Pros:
Highly efficient and powerful DC to DC charger considering the given size Excellent durability and reliability for long term usage Quite practical and easy to use thanks to the given form factor
Cons:
Lacks any detail regarding its supported battery types for charging
3. ATEM DC to DC Charger
Atem Power has been offering power accessories and products for quite a long time where most of its offerings are quite powerful without charging a premium for the same. This Atem Power DC to DC charger is present in the 3rd position of this article because this is a great value-for-money option for most users out there. For starters, this DC to DC charger works on an input current of 12 volts which ensures that it can be used with most power supplies with ease. More importantly, you get a maximum current draw of up to 40 amps from it which allows fast charging for most batteries. If that is not enough for you, then you will be glad to know that this DC to DC charger can be used to charge battery types like lead acid, AGM, gel, calcium, and lithium ion batteries for practicality. Another great thing about Atem Power is that it includes a 1 year long warranty with it for your peace of mind. Best Features:
Works with an input voltage of 12 volts DC Outputs a maximum current of up to 40 amps during charging Compatible with multiple battery types including lead acid, AGM, gel, calcium, lithium ion Comes included with a 1 year long warranty period
Pros:
Amazing value for money DC to DC charger thanks to its performance numbers Supports fast charging for batteries thanks to a high current draw Highly compatible thanks to its support for multiple battery types
Cons:
Can be slightly large and bulky in terms of its size
4. Tecmate DC to DC Charger
Tecmate is one of the newer and smaller brands of battery related accessories out there because of which most of its offerings are fairly affordable and budget friendly. The Tecmate Optimate TM-500 DC to DC charger is the cheapest option that has been given in this list which makes it an excellent option for all those who are on a tight budget. For the given price tag, this DC to DC charger offers support for an input voltage of 240 volts which is much higher than others. Although, this means that it only uses a maximum current draw of up to 2 amps which might not be the best for fast charging. Thankfully, Tecmate has not compromised in terms of its battery compatibility since this DC to DC charger can be used to charge AGM, gel, STD, starter, and deep cycle batteries. Tecmate even includes a 2 year long warranty with this DC to DC charger which is certainly quite amazing considering the given price tag. Best Features:
Works with an input voltage of 240 volts DC Outputs a maximum current of up to 2 amps during charging Compatible with multiple battery types including AGM, gel, STD, starter, deep cycle Comes included with a 2 year long warranty period
Pros:
One of the most affordable DC to DC charger for buyers on a tight budget Best in class compatibility with a wide range of battery types Fairly long warranty period for longevity considering the given price
Cons:
Poor performance in terms of charging speeds due to a low current draw
5. Renogy DC to DC Charger
We have yet another DC to DC charger offering from Renogy in this list which is much more premium than the previous one since this one is made for heavy duty usage. Renogy’s DC to DC charger can be one of the best options in this listicle for all those who are looking for something made for heavy duty usage. Similar to most other DC to DC chargers out there, this one also works with 12 volt current for its input. But unlike other DC to DC chargers, this one supports a much higher maximum current draw for superb charging speeds. Another great thing about this DC to DC charger is that it can be used with gel, AGM, and lithium ion batteries without any issues. And just like the previous Renogy DC to DC charger given above, this one also offers a 1 year long warranty which is to be expected at the given price tag. Best Features:
Works with an input voltage of 12 volts DC Outputs a maximum current of up to 50 amps during charging Compatible with multiple battery types including AGM, gel, lithium ion Comes included with a 1 year long warranty period
Pros:
High performance DC to DC charger with best in class charging speeds Fairly compatible with a wide range of battery types Pretty small and compact in size considering the given performance numbers
Cons:
Quite an expensive and premium DC to DC charger for most
6. Kanruis DC to DC Charger
Kanuris is another entry level brand of DC to DC chargers which happens to be one of the better options out there if you want more powerful charger options. This Kanuris DC to DC charger can be another great pick if you want something versatile at an entry level price tag. Starting with the input voltage of this DC to DC charger, it can be used along with 12 volts of input current. But more importantly, you get the support for a maximum current draw of up to 40 amps which results in amazing performance from this DC to DC charger. Moving over to the supported battery types, you can charge battery types including AGM, gel, lead acid, calcium, and lithium ion batteries with it. And just like most other DC to DC chargers out there, this one also comes backed by a 1 year long warranty period for your peace of mind. Best Features:
Works with an input voltage of 12 volts DC Outputs a maximum current of up to 40 amps during charging Compatible with multiple battery types including AGM, gel, lead acid, calcium, lithium ion Comes included with a 1 year long warranty period
Pros:
Superb value for money DC to DC charger compared to others Compatible with a large number of battery types for versatility Works with standard input voltages for ease of use
Cons:
Build quality could have been a little better compared to others
7. KISAE DC to DC Charger
Kisae Technology is another high end brand of DC to DC chargers which happens to be worth the extra premium since most of its offerings are highly powerful and practical for all kinds of applications. The Kisae Technology DMT1250 DC to DC charger is hands down the best performing and the most versatile option given here. Unlike any other DC to DC charger given here, this works with a number of input voltages ranging from 10 to 32 volt current. And even with this wide range of supported input voltages, you still get an amazing maximum current draw of up to 50 amps from it. Apart from supporting multiple voltages, this DC to DC charger also supports multiple battery types including gel, flooded, AGM, and lithium ion batteries. Moving over to its durability, the included 1 year long warranty is to be expected with something as premium as this. Best Features:
Works with an input voltage of 10 to 32 volts DC Outputs a maximum current of up to 50 amps during charging Compatible with multiple battery types including AGM, flooded, gel, lithium ion Comes included with a 1 year long warranty period
Pros:
Best in class performance thanks to the included features and specifications Supports a wide range of voltages and battery types Quite fast charging speeds thanks to a high maximum current draw
Cons:
A bit on the expensive side for most users and buyers
8. REDARC DC to DC Charger
You can also consider Redarc Electronics and its DC to DC charger if you do not have any budget restrictions and want something highly versatile and practical. Redarc Electronics’ DC to DC charger is another versatile option given in this listicle. To be more specific, this DC to DC charger can work with both 12 volt and 24 volt input currents. And with either of these input voltages, you get a decent maximum current draw of up to 25 amps. Coming to the compatibility side of things, this DC to DC charger allows you to charge most common battery types like AGM, gel, lead acid, calcium, and lithium ion batteries. Being such a premium and high end brand of DC to DC chargers, Redarc Electronics also offers a 2 year long warranty with it. Best Features:
Works with an input voltage of 12 and 24 volts DC Outputs a maximum current of up to 25 amps during charging Compatible with multiple battery types including AGM, gel, lead acid, calcium, lithium ion Comes included with a 2 year long warranty period.
Pros:
Highly versatile DC to DC charger thanks to its dual voltage support Fully compatible with most of the common battery types out there Long warranty period along with a solid construction for your peace of mind
Cons:
Not the highest current draw rating considering the given price
Buying Guide for the Best DC to DC Chargers
Whether you get DC power in your home or you travel a lot in vehicles like RVs or boats, the chances are that you use DC appliances instead of AC ones. And apart from all other DC appliances that you may use, you might also need something like the best DC to DC chargers mentioned above. To help you go with the most ideal DC to DC charger for your needs, all of these best DC to DC chargers have all their key features and options along with them. More importantly, you should also check this complete buying guide for the best DC to DC chargers down below for making sure that you are going with the right one:
Input Voltage
Starting with the most important factor to consider while going with a DC to DC charger, we have the input voltage rating. As you can expect by its name, the input voltage rating of your DC to DC charger will tell you about the current voltage that your DC to DC charger can accept for charging your batteries. Usually, you will find most DC to DC chargers to work with 12 volt or 24 volt DC current. But if needed, you can also find some DC to DC chargers that can work with 120 volt or 240 volt DC current. So, if you are getting a DC to DC charger, just make sure that you are getting one that supports the voltage offered by your power supply.
Maximum Current
While having a compatible DC to DC charger is definitely important, you also need to make sure that your DC to DC charger also offers fast charging speeds. This becomes even more important when you have large capacity batteries which can take a long time to fully charge. In such cases, you need to check the maximum current rating of your DC to DC charger as a charger with a higher maximum current rating will offer faster-charging speeds. Talking about the current ratings that you can find, it will include ratings like up to 25 amps, up to 40 amps, and even up to 50 amps. Out of all these options, the maximum current rating of up to 50 amps will offer much faster-charging speeds when compared with a current rating of just up to 25 amps.
Supported Battery Types
Coming back to the compatibility side of things regarding your DC to DC charger, we have the supported battery type. If you are familiar with DC batteries, then you must know that there are all kinds of batteries out there. This includes batteries like AGM, gel, lead acid, Li-ion, calcium, and many other types of batteries. As a result, even if your DC to DC charger may support the voltage of your batteries, it may still not work unless specified separately. In other words, you should also check the list of supported battery types for your DC to DC charger. And any DC to DC charger that supports a large number of battery types is going to be highly versatile and practical for most users.
Warranty
Once you have considered all of the points given above and picked the most suitable DC to DC charger as per your needs and requirements, you will also want your DC to DC charger to last for as long as possible. And to ensure the same, it is always a great idea to check the included warranty period of your DC to DC charger. As you would expect, any DC to DC charger which offers a long warranty period is going to easily last for quite a while. Talking about the best DC to DC chargers given above, most of them come included with a 1 year long warranty period. However, if you want something even more versatile and practical, then you can also find a few options with an up to 5 year long warranty period which can last for much longer.
Conclusion:
Even when you are camping in your RV or going for a long trip in your boat, you will find yourself needing to charge all kinds of batteries. Although, using a standard battery charger on vehicles like RVs and boats is not feasible since standard battery chargers use AC power to convert it into DC power for charging batteries. Instead of using standard battery chargers, you will need to use something like the best DC to DC chargers that have been given in this list above.
Beginning with one of the cheapest options available out there, the Tecmate DC to DC charger is perfect for buyers on a tight budget. Unlike most other DC to DC chargers out there, this one used 240 volts for its input current. As a result, it only draws a maximum current of up to 2 amps. Even with the given current rating, this DC to DC charger still works with multiple battery types like AGM, GEL, STD, starter, and deep cycle batteries. Despite being an entry level option, you still get a 2 year long warranty with it which makes it pretty great for long term usage as well. However, if you don’t have any budget restrictions and you are looking for something highly versatile and practical, then you can go with the Kisae DC to DC charger. Because this DC to DC charger works with 10 to 32 volts of input current while drawing up to 50 amps of current, you can use this with a wide range of batteries at a fast charging rate. To be more specific, this DC to DC charger works with gel, AGM, flooded, and Li-ion batteries with ease. You also get a standard 1 year long warranty period with it for your peace of mind. But if you want the most durable and reliable DC to DC charger possible, then you should consider going with the Victron DC to DC charger. Thanks to its 5 year long warranty period, this DC to DC charger can easily last for a pretty long period of time without any issues. As for its specifications, it supports an input voltage of 24 volts which allows you to work at a voltage of up to 30 amps. With this, you can charge both lead acid as well as lithium ion batteries if needed.
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