24V to 12V 60A DC-DC Battery Charger

24V to 12V 60A DC-DC Battery Charger (Model: B2B241260) Charge Your 12V Auxiliary Battery from a 24V Vehicle – Bluetooth Dongle & Temperature Sensor Included The OLYS B2B241260 DC-DC Battery Charger provides controlled charging for a 12V auxiliary battery from a 24V vehicle electrical system. Designed for trucks, motorhomes and camper conversions, it delivers up to 60A charging output to replenish your house battery while travelling. Supplied with a BT10 Bluetooth dongle and battery temperature sensor as standard, it offers convenient monitoring and battery temperature sensing. Key Features & Benefits: 24V to 12V Battery Charging – Charge a compatible 12V auxiliary battery from your vehicle’s 24V starter battery and alternator system. Up to 60A Charging Output – Make use of driving time to recharge your house battery. Selectable Battery Profiles – Supports LiFePO4, AGM, GEL, sealed and flooded lead-acid batteries. Automatic Multi-Stage Charging – Regulates charging through boost, constant-voltage and float stages according to the selected battery profile. Bluetooth Monitoring Included – Supplied with a BT10 Bluetooth dongle for monitoring through the compatible app within Bluetooth range. Temperature Sensor Included – Supplied with an external battery temperature sensor for supported temperature-based charging functions. Battery Voltage Sensing – Supports external voltage-sense wiring to help compensate for voltage drop along charging cables. Built-In Protection – Includes overvoltage, overheating and short-circuit protection. Optional Display Meter – Supports the MT-2 display meter, available separately. Who Is It For? Truck Owners – Charge a separate 12V auxiliary battery from a 24V vehicle electrical system. Motorhome & Camper Conversions – Pair a 24V vehicle platform with a 12V house battery system. Touring & Work Vehicles – Replenish the auxiliary battery used for fridges, lighting and other equipment between stops. Why Choose the B2B241260? If your vehicle runs on 24V but your house battery is 12V, the B2B241260 provides a dedicated charging solution. With selectable battery profiles, Bluetooth monitoring and a temperature sensor included, it helps you manage auxiliary battery charging while on the move. Technical Specifications Feature B2B241260 Brand OLYS Nominal Input Voltage 24V DC Input Voltage Range 21V–32V DC Battery Bank Voltage 12V / 12.8V LiFePO4 Maximum Charging Current 60A Maximum Charging Power 780W, as specified by OLYS Recommended Auxiliary Battery Capacity 100Ah–520Ah Battery Compatibility LiFePO4, AGM, GEL, sealed and flooded lead-acid; supported NCM lithium profile Charge Stages Boost, constant voltage, float D+ Control Signal 16V–32V; connection required for DC-DC charging Bluetooth Connectivity BT10 Bluetooth dongle included Battery Temperature Sensor Included Temperature Compensation -3mV/°C/2V for supported lead-acid profiles; not applied to lithium profiles External Battery Voltage Sensing Supported through SS- and SS+ terminals Solar Input / MPPT Not available on this model AC Mains Input Not available on this model Optional Accessories MT-2 display meter, sold separately Operating Temperature Range -20°C to 50°C Standby Current 32 ± 2mA Dimensions 190 × 215 × 70mm Weight 1.6kg What’s Included? OLYS B2B241260 24V to 12V 60A DC-DC Battery Charger BT10 Bluetooth dongle Battery temperature sensor Keep Your Auxiliary Battery Charged While You Travel. See the OLYS B2B/BS Series User Manual here: User Manual Product FAQs Q1: What does a 24V to 12V DC-DC charger do? It uses a 24V vehicle electrical system to charge a separate 12V auxiliary battery, regulating the output to suit the selected battery profile. Q2: Is it compatible with LiFePO4 batteries? Yes. Select the appropriate LiFePO4 charging profile and use a battery with a suitable Battery Management System (BMS). Check that the battery can accept the charger’s output. Q3: Can I connect solar panels directly? No. The B2B241260 does not have a solar input or built-in MPPT controller. Solar charging requires a separate solar charge controller. Q4: Can it charge from 240V mains power? No. This model uses DC input from a 24V battery system. A separate AC battery charger is required for mains charging. Q5: Does it require an ignition connection? Yes. A suitable D+ or ignition control signal must be connected according to the manufacturer’s manual for DC-DC charging to operate. Q6: Are Bluetooth and the temperature sensor included? Yes. The BT10 Bluetooth dongle and battery temperature sensor are included as standard. The MT-2 display meter is available separately. Q7: Can I monitor charging from my phone? Yes. Connect the included BT10 Bluetooth dongle and use the compatible app to monitor charging while within Bluetooth range. Q8: How long will charging take? Charging time depends on battery capacity, starting charge level, available input power and any equipment operating during charging. Charging current reduces as the battery approaches full charge. Q9: What should I check before installation? Confirm the vehicle voltage, battery charging requirements and alternator capacity. Have a qualified installer select suitable cables, fuses and mounting arrangements, following the manufacturer’s manual.