Overview
The TowerTop 25A Max Pro Battery Charger delivers high efficiency, fast and intelligent charging for a wide range of 12V batteries. With four adjustable current settings (3A, 15A, 25A and AUTO) and a maximum 25A output, it can fully charge a 100Ah battery in just 3.5 hours which is over 16 times faster than a 2A charger.
Using advanced SMPS technology and a self developed MCU chip, this charger achieves 85 percent charging efficiency, making it significantly more effective and compact than traditional transformer based chargers.
It supports six professional charging modes including STD, GEL, AGM, Deep Cycle, Calcium and Lithium (LiFePO4), ensuring optimal charging for each battery type. Engine Start provides a 100A boost to start vehicles in seconds, while DC Power Supply mode delivers stable 14V for powering 12V devices or performing ECU programming and diagnostics.
The 8 stage intelligent charging process includes desulfation, repair and maintenance, helping to extend battery life and recover idle batteries. A bright LCD screen clearly displays the charging status. Built in multi safety protections with ETL certification make it safe for both beginners and professionals.
Whether you are charging a car, truck, RV, boat, motorcycle or power tool battery, the TowerTop 25A Max Pro is a reliable all in one solution.
Key Features
- High Efficiency Charging: 25A max output charges a 100Ah battery in 3.5 hours with 85 percent charging efficiency
- Fully Automatic Smart Operation: Auto detection, charging, repair and maintenance without manual setup
- Six Professional Modes: Supports STD, GEL, AGM, Deep Cycle, Calcium and Lithium (LiFePO4) batteries
- Engine Start and DC Power Supply: 100A engine start and 14V DC output for powering accessories and maintenance tasks
- Eight Stage Intelligent Charging: Desulfation, soft start, bulk, absorption, analysis, repair, float and pulse maintenance
- Battery Repair and Winter Mode: Manually restore battery performance and boost charging in cold weather
- Comprehensive Protection: Reverse polarity, spark proof, overvoltage, overheating, overload and short circuit protection
- Lightweight and Compact: Smaller and lighter than traditional chargers
Specifications
- Brand: TowerTop
- Color: 25A Max Pro
- Input Voltage: 120 V AC 60 Hz
- Output Voltage: 12 V
- Output Current: 3A 15A 25A AUTO
- Charging Modes: Precise and Standard Dual Modes
- Battery Modes: GEL STD AGM Deep Cycle Calcium Lithium (LiFePO4)
- Engine Start: Yes 100A within 100 seconds
- DC Power Supply: Yes 14 V up to 25 A
- Repair Mode: Yes
- Winter Mode: Yes plus 0.2 V boost
- Desulfation Mode: Yes
- Battery Hookup Options: 3
- Battery Charge Time: Approximately 3.5 hours for 100Ah battery
- Dimensions: 6.1 in D x 8.46 in W x 6.89 in H
- Weight: 3.95 lbs
- Certifications: ETL
- Warranty: 18 months
Ideal For
- Car owners who want a fast, automatic charger
- Mechanics and DIY enthusiasts performing ECU or module work
- RV, boat, and motorcycle owners needing multi-mode charging
- Lithium and lead-acid battery maintenance year-round
- Anyone wanting to revive idle or weak batteries efficiently
FAQs
Is this charger compatible with both lead acid and LiFePO4 batteries
Yes, it supports STD, GEL, AGM, Deep Cycle, Calcium and Lithium (LiFePO4) battery types.
Can it be used for engine start
Yes, the Engine Start function delivers 100A to help start your vehicle within 100 seconds.
Does it automatically switch to maintenance mode after charging
Yes, it switches to maintenance mode after full charge to prevent overcharging and extend battery life.
What does the DC power supply mode do
It provides a stable 14V DC output that is useful for powering 12V devices or performing diagnostics and ECU programming.
Can it repair a dead battery
It can repair weak or sulfated batteries but cannot revive completely dead ones.
Is it safe for beginners
Yes, it is ETL certified and has multiple built in safety protections including reverse polarity and spark proof technology.
How does Winter Mode help
Winter Mode increases the charging voltage by 0.2 V, improving charging efficiency and performance in cold temperatures.
How heavy is the unit compared to traditional chargers
It is much smaller and lighter than traditional transformer chargers which makes it very portable.
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