The NLDC-25 from National Luna is a DC to DC battery charger and isolator for a dual-battery system.
It will charge an auxiliary or service battery from a vehicle alternator or Solar panel up to 25A output current.
Traditional 12V and 24V vehicle alternators as well as variable voltage alternators are supported.
The integrated MPPT solar controller provides a maximum output power of 375W but can support solar panels higher than this. Solar panel voltages up to 42V can be connected.
The NLDC-25 features a 6-stage charge algorithm that is suitable for any Lead-Acid battery type as well as automotive Lithium-Ion batteries.
3 safety stages analyze the battery and can detect batteries that are damaged and unable to accept charge.
Temperature compensation is used to optimize the output voltage, ensuring safe and full battery charging under various conditions.
The NLDC-25 supports the connection of a remote monitor that displays information about the system and battery levels to the user on a high-contrast LCD screen.
The NLDC-25 has a IP67 rating for harsh environments and is protected against reverse-polarity, over-voltage, over-temperature and over-current conditions.
As experienced Overlanders, we fully understand that things do not always go according to plan.
That is why we offer you our 30-Day Return Policy, so you can get back on the road for more adventures in a heartbeat.
Read more about the terms and conditions that apply in our Easy Returns Policy
Shipping is FREE on most orders with a total value above $250 to customers within the lower 48 United States (Contiguous United States). NOTE: For Front Runner orders, Free Shipping to the lower 48 states ONLY applies to rack kits and orders with a total value above $1,500
However, due to their size and weight, some products may require an LTL truck flat fee shipping charge based on the zone you live in. This flat fee rate will be calculated at checkout, but ONLY for certain brands and products.
Products where the LTL truck flat fee may apply are rooftop tents, roof racks, awnings, bumpers, bed racks, rock sliders, fridges, and drawer systems.
Brands where Flat Fee Shipping based on zones apply:
Please refer to the zone map displayed below for your location.
Read more about the terms and conditions that apply in our Shipping Policy
We know you have plenty of options when shopping for Overlanding gear online, so why choose PeakGear? Because we’re more than just a store—we’re your trusted partner for every adventure. Here’s why shopping with us is a game-changer:
Your security is our top priority. We use encrypted SSL technology and are Level 1 PCI DSS compliant, ensuring your transactions and personal information are always protected. When you shop with us, you can trust that your data is safe and your purchase is secure.
We’ve been Overlanding since 1998 — long before it became a buzzword. With 25 years of experience testing gear in the toughest conditions across six continents, we only sell products we would use ourselves. If it’s in our store, it’s been trail-tested and approved.
No matter what you drive—a passenger car, pickup truck, or a fully rigged 4x4—we have the knowledge to help you build the perfect setup. Our team has driven nearly everything and can guide you toward the best gear for your specific adventure needs.
Fast and FREE Shipping on most orders above $250 to the lower 48 states
30-Day Easy Returns. Not happy with your product, we'll take it back no questions asked, and without charging you ANY restocking fee. Ever!
We don’t just sell gear — we build relationships and pride ourselves on providing the best service, anywhere. Our dedicated Customer Service team is made up of real Overlanders who understand your needs and are ready to help with expert advice, product recommendations, and troubleshooting. Whether you have a question before purchase or need support after, we’re always here to ensure your experience is seamless and stress-free.
Whether you’re a beginner just starting out or a seasoned pro pushing the limits, we believe Overlanding should be accessible to all. That’s why we offer both entry-level products and top-tier gear, ensuring every adventurer finds what they need. More than that, we’re here to help, guide, and support you every step of the way.
The NLDC-25 from National Luna is a DC to DC battery charger and isolator for a dual-battery system.
It will charge an auxiliary or service battery from a vehicle alternator or Solar panel up to 25A output current.
Traditional 12V and 24V vehicle alternators as well as variable voltage alternators are supported.
The integrated MPPT solar controller provides a maximum output power of 375W but can support solar panels higher than this. Solar panel voltages up to 42V can be connected.
The NLDC-25 features a 6-stage charge algorithm that is suitable for any Lead-Acid battery type as well as automotive Lithium-Ion batteries.
3 safety stages analyze the battery and can detect batteries that are damaged and unable to accept charge.
Temperature compensation is used to optimize the output voltage, ensuring safe and full battery charging under various conditions.
The NLDC-25 supports the connection of a remote monitor that displays information about the system and battery levels to the user on a high-contrast LCD screen.
The NLDC-25 has a IP67 rating for harsh environments and is protected against reverse-polarity, over-voltage, over-temperature and over-current conditions.
As experienced Overlanders, we fully understand that things do not always go according to plan.
That is why we offer you our 30-Day Return Policy, so you can get back on the road for more adventures in a heartbeat.
Read more about the terms and conditions that apply in our Easy Returns Policy
Shipping is FREE on most orders with a total value above $250 to customers within the lower 48 United States (Contiguous United States). NOTE: For Front Runner orders, Free Shipping to the lower 48 states ONLY applies to rack kits and orders with a total value above $1,500
However, due to their size and weight, some products may require an LTL truck flat fee shipping charge based on the zone you live in. This flat fee rate will be calculated at checkout, but ONLY for certain brands and products.
Products where the LTL truck flat fee may apply are rooftop tents, roof racks, awnings, bumpers, bed racks, rock sliders, fridges, and drawer systems.
Brands where Flat Fee Shipping based on zones apply:
Please refer to the zone map displayed below for your location.
Read more about the terms and conditions that apply in our Shipping Policy
We know you have plenty of options when shopping for Overlanding gear online, so why choose PeakGear? Because we’re more than just a store—we’re your trusted partner for every adventure. Here’s why shopping with us is a game-changer:
Your security is our top priority. We use encrypted SSL technology and are Level 1 PCI DSS compliant, ensuring your transactions and personal information are always protected. When you shop with us, you can trust that your data is safe and your purchase is secure.
We’ve been Overlanding since 1998 — long before it became a buzzword. With 25 years of experience testing gear in the toughest conditions across six continents, we only sell products we would use ourselves. If it’s in our store, it’s been trail-tested and approved.
No matter what you drive—a passenger car, pickup truck, or a fully rigged 4x4—we have the knowledge to help you build the perfect setup. Our team has driven nearly everything and can guide you toward the best gear for your specific adventure needs.
Fast and FREE Shipping on most orders above $250 to the lower 48 states
30-Day Easy Returns. Not happy with your product, we'll take it back no questions asked, and without charging you ANY restocking fee. Ever!
We don’t just sell gear — we build relationships and pride ourselves on providing the best service, anywhere. Our dedicated Customer Service team is made up of real Overlanders who understand your needs and are ready to help with expert advice, product recommendations, and troubleshooting. Whether you have a question before purchase or need support after, we’re always here to ensure your experience is seamless and stress-free.
Whether you’re a beginner just starting out or a seasoned pro pushing the limits, we believe Overlanding should be accessible to all. That’s why we offer both entry-level products and top-tier gear, ensuring every adventurer finds what they need. More than that, we’re here to help, guide, and support you every step of the way.
