8A Smart Battery Charger – 12V LiFePO4 & Lead Acid Multi-Stage Trickle Charger with Temperature Compensation

Keep your vehicle batteries fully charged, protected, and ready to perform with this 8-Amp Smart Battery Charger for 12V LiFePO4 and Lead-Acid batteries. Designed for cars, trucks, motorcycles, boats, lawn mowers, and marine applications, this portable multi-stage battery charger and maintainer delivers fast, safe, and intelligent charging in all seasons.

Perfect for home garages, workshops, and on-the-go emergency charging, this advanced charger combines trickle charging, pulse repair technology, and temperature compensation to extend battery life and improve engine starts.

Key Features & Benefits

⚡ Fast 8A Multi-Stage Smart Charging

This 12V 8-Amp battery charger delivers significantly faster charging than standard 6A chargers. It supports LiFePO4 and all lead-acid battery types, including:

AGM

GEL

SLA

Flooded

Deep-cycle batteries

Compatible with vehicles such as cars, trucks, SUVs, motorcycles, lawn mowers, boats, and marine equipment.

🔋 Intelligent Trickle Charger & Battery Maintainer

Once fully charged, the charger automatically switches to trickle/float mode, keeping your battery at optimal levels for long-term storage. Ideal for winter, holidays, or vehicles left unused for months—your battery stays healthy and ready to go.

📊 Large Color LED Display

The extra-large color screen provides real-time charging data, even in direct sunlight:

Charging voltage & current

Battery charge percentage

Internal temperature (°C/℉)

Summer & winter modes

Charging status indicators

The extended 7ft charging cable offers added convenience in garages and outdoor use.

🛡️ Advanced Safety Protection System

Engineered with smart control and premium fire-resistant materials, this charger offers complete charging protection, including:

Reverse polarity protection

Over-current & over-voltage protection

Short-circuit protection

Over-temperature protection

Intelligent cooling system

Automatic temperature compensation

Safe and reliable charging anytime, anywhere.

🔄 High-Efficiency Pulse Repair Technology

Built-in pulse repair mode detects battery sulfation and acid stratification to help restore lost battery performance. Improves cold starts and extends overall battery lifespan.
Note: Cannot activate or charge completely dead batteries.

🎁 Ideal Household Tool & Gift Choice

With automatic seasonal temperature adjustment and powerful safety features, this smart charger is a must-have garage essential and a practical gift for car owners, DIY enthusiasts, and professionals alike.

Technical Specifications

Brand: RJtianye

Model: RJ-C120801A

Battery Type: 12V Lead-Acid & LiFePO4 (14.6V ±0.2V)

Charging Current: DC 8A (Max)

Charging Voltage: DC 13.8V–15.5V

Battery Capacity Range: 4Ah–150Ah

Input Voltage: AC 110–230V (50–60Hz)

Operating Temperature: -15°C to 45°C (Automatic voltage compensation)

Dimensions: 146 × 81 × 60 mm

Net Weight: 420g

Input Cable Length: 150 cm

Output Cable Length: 65 cm

⚠ Important: Charging LiFePO4 batteries without a built-in BMS is strictly prohibited.

Package Includes

1 × 12V 8A Smart Battery Charger

1 × User Manual

Notes

Product color may vary slightly due to display settings.

Minor measurement variations may occur due to manual measurement.