Home Collection ECO-WORTHY 12V 20A & 40A DC to DC Charger On-Board MPPT Battery Charger
  • ECO-WORTHY 12V 20A & 40A DC to DC Charger On-Board MPPT Battery Charger - eco-worthy-uk
  • 12V 20A & 40A DC to DC Charger On - Board MPPT Battery Charger - eco - worthy - uk
  • 12V 20A & 40A DC to DC Charger On - Board MPPT Battery Charger - eco - worthy - uk
  • 12V 20A & 40A DC to DC Charger On - Board MPPT Battery Charger - eco - worthy - uk
  • 12V 20A & 40A DC to DC Charger On - Board MPPT Battery Charger - eco - worthy - uk
  • 12V 20A & 40A DC to DC Charger On - Board MPPT Battery Charger - eco - worthy - uk
  • 12V 20A & 40A DC to DC Charger On - Board MPPT Battery Charger - eco - worthy - uk
  • 12V 20A & 40A DC to DC Charger On - Board MPPT Battery Charger - eco - worthy - uk
  • 12V 20A & 40A DC to DC Charger On - Board MPPT Battery Charger - eco - worthy - uk
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ECO-WORTHY 12V 20A & 40A DC to DC Charger On-Board MPPT Battery Charger

ECO-WORTHY 12V 20A & 40A DC to DC Charger On-Board MPPT Battery Charger

£99.99
£99.99 £139.99
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SKU:

UK-L03DCDC20A-1

[Multi-Input 40A Efficient Charging]: ECO-WORTHY 40A DC-DC charger supports alternator and solar panel input. This multi-stage charger provides stable charging for AGM, GEL, lead-acid, lithium, and calcium batteries, making it ideal for RV, camper, marine, and off-grid dual battery systems.

[Safe One-Way Charging Design]: Built-in starter and house battery isolation allows one-way charging only, preventing the house battery from draining the starter battery. Improves safety and ensures your vehicle always has enough power to start when needed.

[Full Protection System]: Equipped with multiple safety protections including starter battery low-voltage protection, overcharge protection, overload protection, and short-circuit protection. Keeps both starter and service batteries safe during charging in all conditions.

[Smart MPPT Solar Charging]: Integrated MPPT controller improves solar charging efficiency and supports automatic charging memory. IP65 waterproof design allows reliable operation in outdoor environments, perfect for RV, boat, and off-grid solar charging systems.

[Easy Installation & Status Indicator]: Clearly labeled wiring ports for solar, alternator, and battery connections make installation simple. LED indicators show charging status and help quickly identify wiring issues, ensuring stable and reliable system operation.

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On-Board MPPT Battery Charger

Eco-Worthy 20A、40A DC to DC charger has unique charging options. This multi-stage, multi-input battery charger can charge home batteries by connecting to the starter battery of a car alternator or by connecting a solar panel directly to the unit. Provides proper charging for AGM/GEL, Lead acid, Lithium and Calcium batteries.

Technical Specifications

12V 20A DC to DC Charger
12V 40A DC to DC Charger
LiFePO4 12V 100Ah Lithium Battery
12V 314AH Lifepo4 Lithium Battery

Type:

Multi Stage

DC battery Input:

12.4-16.0V

Solar input:

16-25V

Output / Charging Voltage:

14.4-15.4V

DC Output:

20A

Solar Output:

20A

Minimum Start Voltage:

2.0V-For Battery Being Charged

Soft Start:

Yes

Soft Charge Current:

20A

Type:

Multi Stage

DC battery Input:

12.4-16.0V

Solar input:

16-25V

Output / Charging Voltage:

14.4-15.4V

DC Output:

40A

Solar Output:

40A

Minimum Start Voltage:

2.0V-For Battery Being Charged

Soft Start:

Yes

Soft Charge Current:

40A

Battery Capacity:

100Ah

Battery Power:

1280Wh

Battery Voltage:

12.8V

Maximum Charge/ Discharge Current:

100A/100A

Charge Temperature Range:

0-45℃

Discharge Temperature Range:

﹣20－55℃

Maximum Charge Voltage:

14.6V

Discharge Cut-Off Voltage:

10V

Screw size:

M8

Battery Size:

260*168*214mm（10.3*6.7*8.5inch）

Battery Weight:

10.5kg (23.2lbs)

Battery Capacity:

314Ah

Battery Power:

4019Wh

Battery Voltage:

12.8V

Maximum Charge/ Discharge Current:

200A

Charge Temperature Range:

0-55℃

Discharge Temperature Range:

﹣20－55℃

Maximum Charge Voltage:

14.6V

Discharge Peak Current:

240A/10s

Screw size:

M8

Battery Size:

414*215*260mm(16.3*8.5*10.3inch)

Battery Weight:

27.4kg (60.5lbs)

Case Material:

ABS+PC

Supported Series Parallel Modes:

2P、3P、4P、2S、3S、4S、 2P2S、2P3S、2P4S、3P2S、4P2S

Standard Charge/Discharge Current:

157A/157A

Operation Voltage:

9.2-14.6V

Included in the Box
  1. 20A DC to DC Charger
  1. 40A DC to DC Charger
  1. 20A DC to DC Charger
  2. 1X12v 100AH Lithium Battery
  3. Accessories
  1. 20A DC to DC Charger
  2. 1X12v 314AH Lithium Battery
  3. Accessories
User manual

ECO-WORTHY 12V 40A DC to DC Charger On Board MPPT Battery Charger- User Manual

Download

ECO-WORTHY 12V 20A DC to DC Charger On Board MPPT Battery Charger- User Manual

Download

ECO-WORTHY Bluetooth APP - User Manual

Download

ECO-WORTHY Eco-Worthy 12V 100Ah LiFePO4 Lithium Battery with Bluetooth - User ManualAPP - User Manual

Download

ECO-WORTHY EnergyTrek 12V 314Ah LiFePO4 Battery – Control Panel & Smart Function Manual

Download

ECO-WORTHY Bluetooth APP - User Manual

Download

Frequently Asked Questions

How do you test lithium battery performance?

+
When measuring the battery's rated voltage, it is recommended to first disconnect the connection wires between the battery and the load, inverter, and charger to ensure accurate results.

What’s the relationship between lithium battery voltage and SOC?

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①During battery use, it is recommended to keep the SOC at 20%~80% to extend the battery life (charge to at least 13.3V) ②If the battery is not used for a long time (more than half a year), at least 50% of the power should be guaranteed, otherwise the battery may be over-discharged and damaged. ③After fully charged, if the battery voltage is greater than or equal to 13.3V after one hour without any connections, it is within the normal range. ④This table is only the test result under ideal conditions. After adjusting to the correct parameters, the voltage drops to 13.26V, which does not prove that the battery capacity is insufficient. The actual capacity needs to test the power of the connected load and the length of use.

How to activate a protected lithium battery?

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A:Take 12.8V battery as an example, when the voltage drops to 0~2V, the battery BMS may enter protection state, and the battery needs to be reactivated. Method 1: Use an AC-DC LiFePO4 Lithium charger with activation function, set the charging voltage to 14.6V for charging. After 30~60 minutes, use a multimeter to measure the voltage. If the voltage changes, continue to charge. Method 2: Use a solar panel and controller with activation function. In an environment with good lighting conditions, connect the solar panel, controller, and battery, and set the charging voltage to 14.6V for charging. After 30~60 minutes, remove the battery connection wire, use a multimeter to measure the voltage. If the voltage changes, continue to charge.

Solar Panel Performance Testing Method

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Disconnect all wires from the solar panel. Use a multimeter to measure both short-circuit current (Isc) and open-circuit voltage (Voc) under sunny outdoor conditions.Note: Performance may vary due to controller temperature and battery charge level.

What kind of warranty and support do you offer?

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We provide up to a 10-year warranty on key battery models, along with U.S.-based support. Our team assists with installation guidance, troubleshooting, and system planning to ensure a smooth experience.