Unitec Automatic 12V/24V Smart Battery Charger – 40A – Model SA-BNTD40

Product Description

Unitec Automatic 12V / 24V Smart Battery Charger – Model SA-BNTD40

Heavy-Duty 40A Intelligent Battery Charger for Cars, Vans, SUVs, Bikes & Lithium Batteries

The Unitec SA-BNTD40 Automatic Battery Charger is a powerful, fully-automatic 40A smart charger designed to charge and maintain 12V and 24V batteries with maximum efficiency and safety. Built with advanced MCU control, multiple charging modes, and real-time LCD display, this charger is ideal for workshops, garages, service stations, and home use in Sri Lanka.

Perfect for charging STD, GEL, AGM, WET, MF, EFB, LiFePO4 (BMS) lithium batteries, this intelligent charger ensures long battery life, stable performance, and reliable power—even for deeply discharged batteries.

🔋 Key Specifications

• Input Voltage: 220–240V AC, 50–60Hz

• Power Rating: 900W max.

• Charging Current:

  • 12VDC: 5A / 15A / 30A / 40A

  • 24VDC: 5A / 15A / 20A

  • Engine Start Boost:

    • 12VDC 100A (E-START 5s)

    • 12VDC 60A (BOOST 300s)

• Battery Voltage: 12V / 24V

• Low Voltage Detection:

  • 1V for 12V batteries

  • 1V for 24V batteries

• Charging System:

  • 10-step fully automatic charging cycle

• Compatible Battery Types:

  • STD / GEL / AGM lead-acid

  • 12V Lithium (BMS)

  • 4-cell LiFePO4

• Cable Length: 2 metres

• Battery Capacity Range:

  • 12V: 15–800Ah

  • 24V: 30–400Ah

• Insulation Class: IP33

• Display: LCD

• Handle: 1 fixed handle

✨ Key Features

Smart MCU-Controlled Charging

• Intelligent MCU management ensures optimal charging speed and battery protection.

• LED indicators + LCD screen show charging status, live voltage, errors & messages.

Advanced Battery Programs

• Special mode for 12V LiFePO4 & Lithium (BMS) batteries

• Maintenance charging (12V/24V) with 2A trickle charge

• Deep discharge recovery with dedicated pulse function

Safety Protection System

• Reverse polarity protection

• Over-heat protection

• Short circuit protection

• Low voltage/over-charge protection

Testing Functions

• Alternator check

• Battery voltage check

• Battery level detection

Multi-Mode Operation

• START

• SUPPLY

• CHARGER

• REPAIR (desulfation & battery recovery)

Engine Start Mode

• 12V 100A high-power engine start boost for emergencies

Supply Mode

• 13.5V / 30A stable power supply for ECU programming, battery support & diagnostics

🎯 Suitable For

• Cars, SUVs, vans, pickups

• Motorcycles & tuk-tuks

• Trucks (24V systems)

• Lithium (BMS) & LiFePO4 batteries

• Auto repair shops & garages

• Home and commercial battery maintenance

🛡 Why Choose Unitec SA-BNTD40?

• Heavy-duty 40A charging power

• Works with almost all battery types used in Sri Lanka

• Multi-protection safety system

• Deep-discharge repair functionality

• Engine start boost for emergencies