- Description
- Shipping & Returns
- Why Buy From Us
Description
National Luna NLDC-25 DC-DC 25Amp Charger
The NLDC-25 from National Luna is an advanced DC-to-DC battery charger and isolator designed for dual-battery systems.
It efficiently charges an auxiliary or service battery from a vehicle's alternator or solar panel, with an output current of up to 25A.
Compatible with both traditional 12V and 24V vehicle alternators, as well as variable voltage alternators, the NLDC-25 ensures your battery is always charged and ready for your next adventure.
Its integrated MPPT solar controller optimizes solar energy with a maximum output power of 375W and supports solar panel voltages up to 42V.
Featuring a 6-stage charge algorithm, the NLDC-25 is suitable for all Lead-Acid battery types and automotive Lithium-Ion batteries, ensuring a safe and efficient charge. It includes three safety stages to detect damaged batteries and utilizes temperature compensation to optimize output voltage for safe and full battery charging under various conditions.
The NLDC-25 also supports the connection of a remote monitor, allowing users to track system and battery levels on a high-contrast LCD screen. With an IP67 (waterproof) rating, the NLDC-25 is built to withstand harsh environments and is protected against reverse-polarity, over-voltage, over-temperature, and over-current conditions. Order yours online today!
What's Included
Avoid the headaches! - Everything you need is included with the National Luna NLDC-25 DC-DC 25Amp Charger and more!
- 1x NLDC-25 DC-DC 25 Amp Charger
- Universal mounting plate & fixtures
- In-line fuses & holders
- 1x Temperature compensation probe
- Installation kit including lugs and screws
- 3-Year Limited Warranty
- Ships in 1-3 Business Days
- 30-Day No Stress Returns
- FAST & FREE SHIPPING To The Lower 48 States
NLDC-25 DC-DC 25Amp Charger Features
- True 25A Output Current - Delivers a consistent 25A charging current for efficient battery charging.
- 6-Stage Intelligent Charge Algorithm - Ensures optimal charging and battery maintenance.
- 12V and 24V Input - Compatible with a wide range of vehicle electrical systems.
- Smart-Alternator Compatible - Works seamlessly with modern variable voltage alternators.
- 25A, 375W MPPT Solar Controller - Integrated MPPT provides maximum output power of 375W but can support solar panels higher than this
- Supports Solar Panels up to 42V - Accommodates a wide range of solar panel voltages.
- AGM, Gel, Wet, Calcium, Lithium Ion Batteries Supported - Versatile battery compatibility for various types.
- Battery Temperature Compensation - Ensures safe charging by adjusting for temperature variations.
- Sealed to IP67 Rating - Waterproof design for durability in harsh environments.
- Replaceable Terminal Block - Allows for easy maintenance and repair.
- Short-Circuit Protected - Prevents damage from electrical shorts.
- Reverse-Polarity Protected - Guards against incorrect battery connection.
- Over-Voltage Protected - Protects against excessive voltage input.
- Over-Temperature Protected - Prevents overheating during operation.
- Optional Remote Monitor - Allows for convenient monitoring of charging status and battery levels.
- NLDC-25 DC-DC Charger - The main charging unit.
- Universal Mounting Plate & Fixtures - For easy installation in various setups.
- In-Line Fuses & Holders - Provides circuit protection for safe operation.
- Temperature Compensation Probe - Monitors battery temperature for optimal charging.
- Installation Kit - Includes lugs and screws for secure mounting.
- Installation Manual - Provides detailed instructions for setup and use.
- Electrical Cables Not Included - Necessary for connecting the charger to the battery and power source.
NLDC-25 DC-DC 25Amp Charger Specifications
| Features | Specifications |
|---|---|
| Dimensions | 6.25”w x 6”H x 2”D |
| Mounting Holes | 4.25”W x 7.70”H |
| Battery Compatibility | AGM, Gel, Wet, Calcium, Lithium Ion |
| Environmental Rating | IP67 (waterproof for harsh environments) |
| Output Current | 25Amp |
| Supported Alternators | 12V, 24V and variable voltage alternators |
NLDC-25 DC-DC 25Amp Charger Instruction Manual
Do you need more information about specifications, installation, care, etc.? Check out the Instruction Manual or download it by clicking the PDF icon!
Shipping & Returns
FREE SHIPING on orders above $250
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:
- Backwoods Adventure Mods
- BA Tents
- Body Armor
- CBI
- Eezi-Awn (only residential addresses)
- Front Runner / Dometic (FREE SHIPPING to the lower 48 states ONLY applies to rack kits and orders with a total value above $1,500)
- Prinsu
- TruckVault (only residential addresses)
- Tuff Stuff
- 23zero
Please refer to the zone map displayed below for your location.
Read more about the terms and conditions that apply in our Shipping Policy
30-Day Easy Returns
As experienced Overlanders, we fully understand that things do not always go according to plan.
That is why we offer you our "No Questions Asked" 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
Why Buy From Us
We know you have plenty of options when shopping for Overlanding gear online, so why choose Open Road Overland? 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:
REASON #1 - TRUST AND SECURITY - SHOP WITH CONFIDENCE
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.
REASON #2 - REAL-WORLD TESTED QUALITY - GEAR YOU CAN RELY ON
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.
REASON #3 - EXPERT ADVICE - BECAUSE EXPERIENCE MATTERS
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.
REASON #4 - HASSLE-FREE SHOPPING - BECAUSE YOUR TIME MATTERS
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Fast and FREE Shipping on most orders above $250 to the lower 48 states
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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!
REASON #5 - GREAT CUSTOMER SERVICE - WE'VE GOT YOUR BACK
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.
REASON #6 - A COMMUNITY THAT CARES - OVERLANDING FOR EVERYONE
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.
