30A 12V→12V Advanced DC-DC Battery Charger with 20A MPPT Solar Input
£127.22
Sale price
£127.22
Regular price
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30A 12V→12V Advanced DC-DC Battery Charger with 20A MPPT Solar Input
£127.22
Sale price
£127.22
Regular price
Shipping calculated at checkout.
DC1212-3020
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Description
30A 12V→12V Advanced DC-DC Battery Charger with 20A MPPT Solar Input
The DC1212-3020 is an advanced dual-input DC-DC charger designed for vehicles, boats and off-grid systems requiring reliable charging from both alternator and solar sources. Delivering up to 30A from a 12V starter battery and a further 20A from its integrated MPPT solar controller, it provides efficient, intelligent charging for a wide range of battery types — including Lead Acid, AGM, Gel, LiFePO4, and Lithium-ion (NCM).
Compact and lightweight, this high-frequency charger uses buck-boost conversion to maintain consistent output even when supply voltage fluctuates. Its intelligent three-stage charging program automatically adjusts to the selected battery chemistry for safe, unattended operation. Whether fitted in a campervan, motorhome, commercial vehicle or boat, the DC1212-3020 ensures fast, complete and controlled charging every time.
Key Features
- Dual charging capability: charges from alternator or solar, switching automatically between inputs for maximum efficiency.
- Integrated 20A MPPT solar controller: extracts maximum power from solar panels (up to 250W, 50V Voc), with trickle charge to maintain the starter battery.
- Intelligent three-stage charging: optimised for Lead Acid, AGM, Gel, LiFePO4 and Lithium-ion (NCM) batteries, ensuring safe and complete charging.
- Temperature management: supports an optional external sensor for automatic voltage compensation (lead-acid) and low-temperature charge inhibit (lithium).
- Data monitoring: compatible with optional Bluetooth module or remote LCD meter for real-time charging data.
- Ignition or voltage sensing control: automatic start/stop charging with engine on/off via D+ terminal or voltage detection.
- Continued charging under load: maintains charge while 12V appliances remain in use; full protection against voltage fluctuation.
- Wake-up function for lithium BMS: automatically reactivates a battery that has entered protection mode.
- Relay signal output: allows battery banks to be linked under heavy load so the source battery can assist the target battery.
- Precision sense terminals: optional terminals for accurate voltage sensing and compensation for cable drop.
- LED indicators: display solar charging status, charging stage, and diagnostic information at a glance.
Technical Specifications
| Source battery voltage | 12V |
| Input voltage range | 10.5 – 16V |
| Effective D+ signal range | 8 – 16V |
| Maximum charging current (target) | 30A |
| Maximum charging power | 390W |
| Maximum solar input power | 250W |
| Maximum solar input current | 14A |
| Solar open-circuit voltage (Voc) | 50V |
| Charging current from solar to target battery | 20A |
| Trickle charge to source battery | 0 – 5A |
| Recommended source battery capacity | ≥ 60Ah |
| Target rated voltage | 12V (Lead Acid, AGM, Gel), 12.8V (LiFePO4), 11.1V (Li-ion) |
| Target battery capacity | 45 – 280Ah |
| Bulk voltage | 14.7V (AGM), 14.3V (Gel), 14.4V (Lead Acid), 13.9–14.6V (LiFePO4), 12.6V (Li-ion) |
| Float voltage | 13.5V (AGM), 13.8V (Gel), 13.5V (Lead Acid), 13.8V (LiFePO4), 12.5V (Li-ion) |
| Temperature compensation | −3 mV / °C / 2 V (Lead-acid only) |
| Operating temperature | −20 °C to +50 °C |
| Self-consumption | 17 mA |
| Relay signal output | 12 V / 1 A |
| Dimensions (L × W × H) | 190 × 194 × 70 mm |
| Weight | 1.44 kg |
| Warranty | 1 year |
Compatibility & Installation
Suitable for 12V electrical systems only. Works with all common 12V battery types and alternator systems. Not compatible with 24V systems or mixed 12V/24V setups. Install using appropriately sized cables and fuses in a ventilated location. Optional accessories — including Bluetooth module, remote meter, and temperature sensor — allow flexible monitoring and control in vehicle, marine or off-grid environments.
Documents Available
Installation and user guide available for download.
Return policy
Our goal is for every customer to be totally satisfied with their purchase. If this isn't the case, let us know and we'll do our best to work with you to make it right.
Shipping
We will work quickly to ship your order as soon as possible. Once your order has shipped, you will receive an email with further information. Delivery times vary depending on your location.
Manufacturing
Our products are manufactured both locally and globally. We carefully select our manufacturing partners to ensure our products are high quality and a fair value.