KickAss 12V/24V 25A DCDC Charger with Solar MPPT & Pre-Wired Anderson Plug

KickAss 12V/24V 25A DCDC Charger with Solar MPPT & Pre-Wired Anderson Plug

Support Page New 2021/2022 DC-DC Charger Manual

Welcome to the next generation of DCDC vehicle battery charging. KickAss has developed and delivered an onboard vehicle charging solution like no other. Engineered for durability and expertly designed for charging performance, the KickAss DC-DC charger is the new weapon of choice in dual battery systems.

KickAss DC charging at a glance:

The True 4-stage charging features BULK, ABSORPTION, FLOAT and PULSE modes with advanced algorithms enhancing the overall charging performance of auxiliary batteries. This ensures your auxiliary battery is charged the correct way, enabling it to reach maximum charge capacity while also maintaining optimal performance. With a powerful 25 Amp maximum output, it provides fast and effective charging.

This charger overcomes issues caused by smart charging systems and variable voltage alternators in modern vehicles, delivering a consistent output to your auxiliary battery. It ensures reliable charging in both new and older vehicles, helping to maintain and extend battery life.

Inbuilt isolation prevents your auxiliary battery from draining your start battery when the vehicle is off. Smart tech detects charging status automatically, so no manual switching is needed — it's all handled for you from the moment you start your engine.

KickAss DCDC Features

Three Pin Anderson Style Connector
Easily connect your 12V DCDC Charger with the new three-pin Anderson connection, combining positive alternator, negative ground, and ignition wires. Fully compatible with standard two-pin Anderson connectors.

Lithium BMS Sleep Mode Recovery Feature
In Lithium Mode, if the battery drops below safe voltage and enters sleep mode, the charger will initiate recovery mode. It will trickle charge until the cut-in voltage is reached, then resume normal charging. This function helps revive lithium batteries protected by a built-in Battery Management System (BMS).

The charger will display fault codes for open circuit output if the battery is asleep. To attempt recovery, you must select 'LITHIUM' using the 'MODE' button before connecting the charger.

How to wake a lithium battery:

1. Disconnect all loads from the lithium battery.
2. Connect alternator or solar input to the DCDC Charger.
3. Connect the output from the charger to the battery.
4. The charger will flash all battery types; BULK and PULSE LEDs stay lit for 30 seconds before Recovery Mode starts.
5. When the source (e.g. Solar) is active and LITHIUM flashes, recovery is in progress.
6. Once voltage recovers, the charger resumes normal operation and loads can be reconnected.

Maximum Solar Gains with Integrated MPPT
Charge your auxiliary battery from solar using the integrated MPPT solar controller. Ideal for caravans and campers, it ensures efficient solar charging even without the vehicle running.

Plug & Play by Design
Quick installation with Plug & Play Anderson-style connectors — even faster when used with a KickAss wiring kit or battery box.

Crisp LED Display and Control
Bright, easy-to-read LED indicators show charging status and mode. Set battery type easily with the soft-touch MODE button.

Multi Battery Type Compatibility
Compatible with GEL, AGM, WET, CALCIUM, and LITHIUM (LiFePO4) batteries for flexible dual battery setups.

Ultra Compatible
Works with 24V systems for charging 12V batteries, and supports smart alternators with a dedicated voltage sense wire.

Fully Sealed, IP67
Built tough with full water and dust sealing to IP67. Internals are coated for extreme durability against corrosion and moisture.

The Best Protection, Ever!
Includes built-in safety features:

• Short Circuit Protection
• Reverse Polarity Protection
• Over Voltage Protection
• Over Temperature Protection
• Temperature Compensation

KickAss is proud to bring you the next generation in onboard charging, designed to

The KickAss 25A DC-DC Charger can deliver a maximum output current of 25 amps and up to 368 watts of power, efficiently charging your auxiliary battery while your vehicle is running or via solar input when parked. This high current capacity ensures your battery is fully charged and maintained quickly and safely.

Yes, the KickAss 25A DC-DC Charger is compatible with multiple battery types including GEL, AGM, WET, CALCIUM, and Lithium LiFePO₄ batteries. It automatically adjusts its charging profile to suit your battery type for optimal performance and longevity.

The charger features an integrated isolator with cut-in and cut-out voltages set at 13.2V/12.6V for 12V systems (and 26.4V/25.2V for 24V systems), ensuring it only charges your auxiliary battery when your vehicle’s alternator is running. This prevents your start battery from draining when the engine is off.

Installation requires mounting the charger close to your auxiliary battery, but never directly on it, in a well-ventilated area away from heat sources like exhausts or turbos. Use 8mm² cable for all main connections and fit 50A fuses on both input and output sides to protect your wiring.

The charger includes multiple built-in protections: short circuit protection prevents operation if batteries are connected incorrectly; reverse polarity protection signals faults if connections are reversed; over voltage protection shuts down the unit if voltages exceed safe levels; and over temperature protection reduces output current to avoid overheating.

Yes, the charger has a built-in MPPT solar controller that efficiently manages solar input up to 25 amps and 32V DC, optimising the charge from your solar panels when your vehicle is not running. This ensures maximum energy harvest from your solar setup.

The charger measures 165mm x 120mm x 40mm and weighs 1.11kg, making it compact and easy to fit in your vehicle or battery box. It has an IP67 rating, meaning it is dust-tight and protected against water immersion up to 1 metre, making it highly durable in tough outdoor conditions.

The KickAss charger features an integrated isolator with voltage sensing that disconnects the auxiliary battery from the start battery when the engine is off, preventing drain. It only reconnects and charges the auxiliary battery when the alternator voltage reaches 13.2V (12V system) or 26.4V (24V system).