30A 12V/24V Dual Input DC-DC Battery Charger with MPPT

30A 12V/24V Dual Input DC-DC Battery Charger with MPPT - Image 2

30A 12V/24V Dual Input DC-DC Battery Charger with MPPT - Image 3

30A 12V/24V Dual Input DC-DC Battery Charger with MPPT - Image 4

30A 12V/24V Dual Input DC-DC Battery Charger with MPPT

£199.00 Inc. VAT

Our DC-DC Intelligent Charger/Controller is perfect for vans and motorhomes with dual batteries, allowing you to generate and charge energy from both your alternator and solar panels.

Smart Power Switching – Automatically transitions between solar charging in sunlight and alternator power on the road for uninterrupted energy.
Versatile Charging Modes – Supports AGM, GEL, Flooded, and Lithium batteries for main, starter, and auxiliary use.
All-Round Protection – Full protection against over-voltage, reverse polarity, overheating, and more.
24/7 Monitoring – Real-time data tracking with 300 days of historical records.

BUY WITH CONFIDENCE

GO ANYWHERE
CHARGE EVERYWHERE

This intelligent DCDC MPPT device is designed for campervans, motorhomes, and boats. It can charge your leisure battery and an optional second battery from both solar panels and the alternator of your vehicle. It works with your solar panels when the sun is bright and automatically switches on alternator charging when your vehicle is ON—or even better, both at the same time. It adapts to a range of electrical systems, and with Bluetooth connectivity, you’ll always have access to the app for the latest live information and change of settings.

DUAL BATTERY CHARGING

Power up both your main battery and your auxiliary/starter battery. Stay safe on road trips with plenty of charging options

WIDE SAFETY PROTECTION

Advanced protection for battery charge and discharge, plus overheating, PV reverse polarity, and more.

COMPATIBLE WITH ALL BATTERIES

Supports all battery types for endless possibilities. AGM / Lead Acid / LiFePO4 / GEL / SLD / FLD

MORE WAYS TO CHARGE

This mode will charge your leisure battery from both power sources—whether at the same time or choosing one—the solar panels and the engine. It works with both smart alternators and regular ones.

Charge your starter battery from both solar panels and your leisure battery when the sun is bright and the starter battery voltage drops below the set level.

With the same energy sources—your alternator (engine) and solar panels—you can choose to charge two batteries: your main leisure battery and a second one for emergencies or backup.

This is the simplest setup, charging your leisure battery from solar panels. If this mode is all you need, click here to explore our standard MPPT controllers—more suitable and affordable for this purpose.

SQUEEZE EVERY DROP OF POWER

To charge your batteries from solar panels, the MPPT (Maximum Power Point Tracking) technology in this device lets you harvest 99% of the available energy—up to 30% more than PWM (standard) controllers.

CHARGE BETWEEN 12V AND 24V

With back boost charging technology, you can
charge between a 12V and a 24V battery.

CONTROL

MONITOR AND OPTIMIZE

Real Time Monitoring

300 Days
of Data

Battery
Settings

DOWNLOAD THE APP

Search “ChargePro 2.0” on the App Store and pair the Bluetooth with your phone.

DIMENSIONS

DESCRIPTION

Device Components

1. LED Display
2. Function Button
3. PV Positive Terminal
4. Battery 1 Positive Terminal
5. Battery 2 Positive Terminal
6. External Input Positive Terminal
7. Common Negative Port
8. IGN Port
9. CAN Communication Port

10. BVS Input Voltage
11. BAT 1 Temperature Sensor
12. BAT 2 Temperature Sensor
13. RS485 Communication Port
14. Mounting Holes
15. Mounting Screw Hole
16. Terminal Box Cover
17. Grounding Connection Point

SPECS

WHAT'S INCLUDED?

FAQ

How long will a 100Ah lithium leisure battery last?

A 12V 100Ah LiFePO4 leisure battery gives you roughly 1200 usable watt-hours of energy (12V × 100Ah = 1200Wh). To figure out how long it will run for, simply add up the watts of all your devices and divide 1200 by that number.

General Guideline:

100W usage (small TV, lights): ~12 hours
200W usage (TV, laptop, lights): ~6 hours
500W usage (small heater): ~2.4 hours
1000W usage (microwave, kettle): ~1.2 hours

Remember: Actual runtime will vary based on temperature, battery age, and the type of devices being powered.

How many solar panels to charge a 100ah battery?

Using the Voltanic 200W Solar Panel as an example, the module itself generates around 10 amps per hour in peak sunlight. Since a 100Ah battery needs 100 amp-hours to charge fully, it would theoretically take 10 hours of perfect sunlight to charge it up. However, you typically only get 4-6 hours of good sun per day (in the spring & summer), so expect about 2 days for a full charge with a 200W panel.

General Guide:

Basic setup: 200W panel (2-3 days to charge)
Better setup: 300W panel (1-2 days to charge)
Optimal setup: 400W+ panel (1 day to charge)

Remember: Always use an MPPT solar charge controller between your panels and battery if you want to generate the most power.

How long will a 12V fridge run on a 100Ah battery?

A typical 12V camping fridge uses around 2-4 amps per hour (24-48 watts) when the compressor is running. However, fridges don’t run constantly – they typically cycle on and off to maintain temperature, running about 30% of the time in normal conditions. This means they average 0.6-1.2 amps per hour (7-14 watts).

Runtime Guideline:

Average conditions: 3-4 days runtime
Hot weather (more cycling): 2-3 days runtime
If running constantly: 20-30 hours

Remember: These are estimates – actual runtime depends on ambient temperature, how often you open the fridge, how full the fridge is etc.

What size inverter do I need for my 100ah battery?

The key factor to look at is your battery’s continuous discharge current rating. This is the amount of current (or amps) the battery can safely discharge continuously during day to day usage. A typical 12V 100Ah LiFePO4 battery has a continuous discharge rating of 100A or 1200 Watts (100A × 12V = 1200W)

Therefore, you should not use devices that continuously draw more than 1200 watts making the 1200W inverter perfect.

Note: You can technically use larger 1500-2000 watt inverters on a 12V 100Ah battery as running an inverter at 50-60% capacity (rather than at full load) can actually extend its lifespan. Just remember to never use devices that breach the continuous discharge current limit or you will reduce the lifespan of your battery & could damage it.

Remember: Always choose a pure sine wave inverter.

Can I use my lead-acid charger to charge my LiFePO4?

Yes, most standard 12V lead-acid chargers can safely charge LiFePO4 batteries since they charge at similar voltages (around 14.4V). However, there are a few things to consider:

Good to know:

Lead-acid chargers typically charge at lower currents, so charging will be slower
You may not achieve 100% charge
Avoid chargers with “desulfation” or “recovery” modes that use high voltage

For best results:

Use a proper LiFePO4 charger for faster charging and optimal battery life
If using a lead-acid charger, make sure it doesn’t exceed 14.6V
Check that your charger doesn’t have aggressive equalization modes

Remember: While lead-acid chargers will work, a dedicated LiFePO4 charger is a better long-term investment for optimal battery performance and lifespan.

How to recharge my LiFePO4 batteries?

LiFePO4 batteries require a specific charging profile to ensure safe, efficient charging and maximum battery life. You have several charging options:

LiFePO4 Battery Charger (Wall Outlet)
Solar Panels
Use a DC-DC charger designed for LiFePO4

Remember: Always match charging voltage (14.4V-14.6V)

Can I use a split charge relay to charge my LiFePO4 battery?

Technically yes, a split charge relay could work to charge a LiFePO4 battery since alternators typically output 14.4V, which is within LiFePO4’s charging voltage range. However, it’s not recommended because:

Alternator voltage can spike and fluctuate (especially in modern vehicles)
No protection against overcharging
No temperature monitoring
Could potentially void battery warranty
May cause premature battery wear

Better solution:

Use a DC-to-DC charger designed for LiFePO4
Provides proper voltage regulation
Includes safety features and proper charging profile

While a split charge relay might work in a pinch, investing in a proper DC-to-DC charger will protect your battery investment and ensure safe, efficient charging.

Categories: All Products, Charge Controllers

Most solar kits have a dirty little secret they don't tell you about:

They waste valuable power.

Here's the deal

12V solar panels actually output around 20V

12V leisure batteries charge at just over 12V*

Standard PWM controllers simply drop those extra 8V — throwing away precious power

In cloudy Britain where every watt counts, this is a problem.

The Voltanic Difference

Every Voltanic Kit takes those wasted volts and converts them into extra amps using Advanced MPPT (Maximum Power Point Tracking) Technology.

Harvest 100% of your Solar Energy - No wasted watts

Charge your Batteries 30% Faster

More Power, Fewer Panels - Perfect for tight spaces

Better Value Investment - Get what you pay for

Maximum Power. Zero Waste.

Real World Comparison:

100W Panel Performance

Watts = Volts x Amps

Controller	Standard PWM	Voltanic MPPT
Panel Voltage	20V	20V
Controller Charging Voltage	12V (PWM reduces voltage)	12V (MPPT reduces voltage)
Amperage	5.8A (amps stays same)	8.2A (MPPT increases amps)
Power Output	12V × 5.8A = 70W	12V × 8.2A = 98W
Power Wastage	~30W (lost as heat)	~2W (conversion loss)