Marine battery charger B2B242450

for automobilesdesktopVRLA

Short Description
Input to Output Voltage: 24V to 24V
Max Charge Current: 50A (24V system)
Main battery chemistries: GEL, Sealed Lead Acid, AGM, LiFePO4, Lithium-ion
Model / Size / Weight: B2B242450 — 190 x 215 x 70 mm / 1.6 kg
Warranty: 2 years

Overview
DC-DC charger designed for motorhomes, campers, marine and similar mobile applications. Charges the auxiliary/main service battery from the vehicle/boat starter battery or alternator, and on compatible models accepts solar input to manage and optimise charging for different battery chemistries.

B2B Charge

• Enables charging of the main/service battery from the vehicle starter battery or alternator; can also be used standalone to transfer charge between batteries.
• When the engine is running, the alternator can charge the service battery at the charger's rated current for fast, controlled charging.
• The charger regulates voltage and current (boost or step-down) to follow the recommended charge profile for the selected battery type.

MPPT Solar Charge

• Integrated MPPT (Maximum Power Point Tracking) increases solar charging efficiency by approximately 10–30% compared with a non‑MPPT regulator.
• Manages solar input with boost/step-down control to maintain the configured charge current and proper charging stages (CC/CV/float).
• Provides maintenance charge to the starter battery when the vehicle/boat is parked for extended periods to ensure reliable starting.

Technical Parameters
Model: B2B242450
Input - Vehicle starter battery type: Lead acid / Lithium batteries
Input - Vehicle starter battery voltage: DC 24V (21–32V)
Input - D+ signal voltage: 16–32V
Input - Vehicle starter battery capacity: 80AH–100AH (recommended)
Output - Auxiliary/Main battery type and float voltages: GEL (14.3V), Sealed (14.4V), Flooded (14.7V), LiFePO4 (14.6V), Lithium-ion (12.6V)
Output - Auxiliary/Main battery voltage: 24V
Output - Max charge current: 50A
Working mode: Battery-to-battery (B2B)
Charge process: CC, CV, Trickle/Float
DIP switch: Select battery type via DIP switch
Stand-by current: 16 ± 2 mA
Protections: Over-charge, over-current, over-voltage protection
Operating temperature: -20 to 50 °C
Dimensions: 190 x 215 x 70 mm
Weight: 1.6 kg
Accessories: Display (MT-2); Bluetooth module (BT10); Temperature sensor (TRS)

Additional Model Variants & Notes
Related models in the family cover DC12V→DC12V, DC12V→DC24V and DC24V→DC12V variants. The B2B242450 specifically corresponds to the 24V→24V, 50A configuration. Select battery type via DIP switch to match the installed battery chemistry.

Technical specifications

• Model: B2B242450
• Input voltage (vehicle starter battery): DC 24V (21–32V)
• Vehicle starter battery type: Lead acid / Lithium batteries
• D+ signal voltage: 16–32V
• Vehicle starter battery capacity: 80AH–100AH
• Output auxiliary/main battery voltage: 24V
• Output auxiliary/main battery types: GEL, Sealed, Flooded, LiFePO4, Lithium-ion (with corresponding charge voltages)
• Maximum charge current: 50A
• Charge process: Constant Current (CC), Constant Voltage (CV), Trickle/Float
• Working mode: Battery-to-battery
• DIP switch: Battery type selection
• Stand-by current: 16 ± 2 mA
• Protections: Over-charge, over-current, over-voltage
• Operating temperature: -20 to 50 °C
• Dimensions: 190 x 215 x 70 mm
• Weight: 1.6 kg
• Accessories: Display (MT-2); Bluetooth module (BT10); Temperature sensor (TRS)