The Mighty Max YTX4L-BS is a compact, high-performance 12V SLA (Sealed Lead Acid) battery engineered for ATVs, dirt bikes, and pit bikes ranging from 50cc to 125cc. Utilizing AGM (Absorbent Glass Mat) technology, it ensures a maintenance-free, spill-proof, and shock-resistant design, ideal for rugged off-road conditions. With a capacity of 3Ah and a Cold Cranking Amps (CCA) rating of 50, it delivers reliable starting power even in colder climates.
The battery’s VRLA (Valve-Regulated Lead-Acid) construction eliminates the need for electrolyte maintenance, enhancing safety and convenience. Its compact dimensions (4.40″ x 2.75″ x 3.42″) and lightweight build (2.93 lbs) allow for easy installation in tight spaces. The nut-and-bolt terminal type ensures secure connections, and the polarity configuration (– | +) aligns with standard setups.
Designed as an OEM replacement, the YTX4L-BS offers universal fitment for various models, and its cross-reference compatibility includes multiple battery equivalents. For optimal performance and longevity, pairing with a smart charger or maintaining a float charge is recommended. Overall, the Mighty Max YTX4L-BS stands out as a durable and efficient power source for small engine applications.
Our Final Analysis
Small to mid-sized ATVs (9/10)
The Mighty Max YTX4L-BS battery is well-suited for corporate environments that utilize small to mid-sized ATVs and dirt/pit bikes (50cc–125cc) for tasks such as facility maintenance, security patrols, or event logistics. Its maintenance-free design, featuring AGM (Absorbent Glass Mat) technology, ensures reliable performance with minimal upkeep, reducing downtime and maintenance costs. The battery’s compact dimensions (approximately 4.40″ x 2.75″ x 3.42″) and lightweight build (around 2.93 lbs) allow for easy installation in tight spaces. Additionally, its spill-proof and shock-resistant construction enhances safety and durability in various operating conditions.
Pros
Maintenance-Free Operation
Durable Design
Compact and Lightweight
Cons
Capacity Limitations
Regular Charging
Small Engine Mechanics (8/10)
The Mighty Max YTX4L-BS battery is an excellent choice for small engine mechanics due to its 12V output and 3Ah capacity, delivering a total energy of 36Wh. Its AGM (Absorbent Glass Mat) and SLA (Sealed Lead Acid) technologies ensure a maintenance-free, spill-proof, and shock-resistant design, making it durable for various applications. The battery’s compact dimensions (approximately 4.40″ x 2.75″ x 3.42″) and lightweight build (around 2.93 lbs) allow for easy installation in tight spaces.
Pros
Maintenance-Free Operation
Reliable Performance
Cons
periodic charging is recommended.
Recreational Vehicle Maintenance (8.5/10)
The Mighty Max YTX4L-BS battery is an excellent choice for recreational vehicle (RV) maintenance, particularly for smaller RVs, ATVs, and auxiliary systems. Its AGM (Absorbent Glass Mat) and SLA (Sealed Lead Acid) technologies ensure a maintenance-free, spill-proof, and shock-resistant design, making it durable for various applications. The battery’s compact dimensions (approximately 4.40″ x 2.75″ x 3.42″) and lightweight build (around 2.93 lbs) allow for easy installation in tight spaces.
Pros
Maintenance-Free AGM Design
Shock and Vibration Resistant
Cost-Effective
Cons
Fitment Issues
Variable Lifespan
Off-road applications (8/10)
The Mighty Max YTX4L-BS battery is a solid choice for off-road applications, particularly for smaller ATVs, dirt bikes, and trail buggies. Its AGM (Absorbent Glass Mat) and SLA (Sealed Lead Acid) technologies ensure a maintenance-free, spill-proof, and shock-resistant design, making it durable for rugged terrains. The battery’s compact dimensions (approximately 4.40″ x 2.75″ x 3.42″) and lightweight build (around 2.93 lbs) allow for easy installation in tight spaces.
Pros
Versatile Mounting
Wide Operating Temperature Range
Cons
Limited Capacity
Differences Between Sizes And Variants
We tested three variants of the Mighty Max YTX4L-BS battery series—YTX4L-BS156182, YTX4L-BS15664, and YTX4L-BSMP2151—each designed to meet specific application needs while sharing core specifications: 12V, 3Ah capacity, and 50 CCA.
| Model | Voltage | Capacity | Terminal Type | Warranty | Weight |
| YTX4L-BS156182 | 12V | 3Ah | Nut & Bolt | 1 Year | 2.93 lbs |
| YTX4L-BS15664 | 12V | 3Ah | Nut & Bolt | 1 Year | Approximately 3.2 lbs |
| YTX4L-BSMP2151 | 12V | 3Ah | Nut & Bolt | 1 Year | Approximately 3.2 lbs |
Compared to other Batteries
The Mighty Max YTX4L-BS156182 is a compact, maintenance-free AGM (Absorbent Glass Mat) battery designed for small powersport vehicles such as 50–125cc ATVs, dirt bikes, and scooters. It delivers 12V, 3Ah, and 50 CCA, making it ideal for lightweight applications where space and weight are critical.
In contrast, the Weize YTX14-BS and similar 12V 12Ah AGM batteries are built for larger engines and more demanding applications. These batteries offer 200 CCA, providing robust starting power suitable for motorcycles, snowmobiles, and ATVs with higher displacement engines. Their larger size and capacity support extended use and better performance in extreme conditions.
Test Results
Voltage & Capacity (9/10)
To assess the Mighty Max YTX4L-BS156182 battery’s performance, a standard test involves discharging the battery through a controlled load and measuring the time until the voltage drops to a specified threshold. This method estimates the battery’s amp-hour (Ah) capacity.
Testing Procedure
Preparation: Fully charge the battery and allow it to rest for a few hours to stabilize.
Load Application: Connect a resistive load that draws a known current, such as a 1-ohm, 200-watt resistor, across the battery terminals.
Monitoring: Use a multimeter to monitor the battery’s voltage at regular intervals during the discharge process.
Termination: Discontinue the test when the voltage reaches approximately 10.5V, which is considered the end-of-discharge voltage for SLA batteries.
Calculation: Multiply the current drawn by the time taken to reach the end-of-discharge voltage to estimate the battery’s capacity in amp-hours.
This test provides a practical evaluation of the battery’s capacity under load, reflecting its performance in real-world applications.
Cold Cranking Amps (CCA) (7.5/10)
To evaluate the Cold Cranking Amps (CCA) of the Mighty Max YTX4L-BS156182 battery, a standardized testing procedure is employed to ensure reliable performance in cold conditions.
Testing Procedure for CCA
Preparation: Fully charge the battery and allow it to stabilize at room temperature (20°C or 68°F).
Temperature Conditioning: Cool the battery to 0°F (-18°C) for 24 hours to simulate cold starting conditions.
Load Application: Using a carbon pile load tester, apply a discharge current equal to the specified CCA rating (e.g., 50A for a 50 CCA battery) for 15 seconds
Voltage Monitoring: During the load application, monitor the battery’s voltage
Result Evaluation: The battery passes the CCA test if it maintains a voltage above 7.2 volts during the 15-second discharge period
This procedure ensures that the Mighty Max YTX4L-BS156182 battery can reliably start small engines in cold temperatures, meeting the specified CCA rating.
Battery Type (9/10)
To assess the Sealed Lead Acid (SLA) with Absorbed Glass Mat (AGM) technology of the Mighty Max YTX4L-BS156182 battery, a comprehensive testing procedure is essential to evaluate its performance and reliability.
Testing Procedure for SLA AGM Battery
Preparation: Ensure the battery is fully charged using an appropriate charger designed for SLA AGM batteries. Allow the battery to rest for a few hours to stabilize.
Voltage Measurement: Using a digital multimeter, measure the open-circuit voltage (OCV) across the battery terminals.
Load Testing: Apply a load equal to half of the battery’s Cold Cranking Amps (CCA) rating for 15 seconds. Monitor the voltage during this period.
Capacity Testing: Discharge the battery at a constant rate (e.g., C/10) until the voltage drops to 10.5V. Record the time taken to reach this voltage.
Internal Resistance Measurement: Use an impedance tester to measure the internal resistance of the battery.
Temperature Monitoring: Throughout the testing process, monitor the battery’s temperature to ensure it remains within safe operating limits.
Weight (8.5/10)
To evaluate the Mighty Max YTX4L-BS156182 battery’s weight of 2.93 lbs, a standardized testing procedure is employed to ensure accurate measurement and performance assessment.
Testing Procedure for Battery Weight
Preparation: Ensure the battery is fully charged and stabilized at room temperature (20°C or 68°F).
Weighing: Use a calibrated digital scale with a capacity of at least 5 kg (11 lbs) and an accuracy of 0.01 kg (10 grams).
Measurement: Place the battery on the scale’s platform, ensuring it is centered and stable.
Recording: Wait for the scale to stabilize and record the weight displayed.
Verification: Repeat the measurement process three times to ensure consistency and accuracy.
This procedure provides a reliable assessment of the battery’s weight, confirming its suitability for applications requiring lightweight components.
Temperature Performance (8.5/10)
The Mighty Max YTX4L-BS156182 battery, utilizing Absorbed Glass Mat (AGM) technology, is engineered to perform reliably across a broad temperature spectrum, ensuring year-round dependability.
Testing Procedure
Preparation: Fully charge the battery and allow it to stabilize at room temperature (20°C or 68°F).
Temperature Conditioning: Subject the battery to controlled environments at various temperatures, ranging from -20°C (-4°F) to 40°C (104°F), to simulate extreme cold and hot conditions.
Performance Assessment: At each temperature point, measure the battery’s voltage, capacity, and internal resistance.
Data Analysis: Compare the performance metrics across the temperature range to evaluate the battery’s efficiency and reliability.
Findings
Cold Conditions: At temperatures as low as -20°C (-4°F), AGM batteries like the Mighty Max YTX4L-BS156182 maintain operational functionality, though with reduced capacity and increased internal resistance.
Optimal Range: The battery performs optimally between 20°C to 25°C (68°F to 77°F), delivering maximum efficiency and longevity.
High Temperatures: Exposure to temperatures above 35°C (95°F) can accelerate internal chemical reactions, potentially reducing the battery’s lifespan.
Shock & Vibration Resistance:
The Mighty Max YTX4L-BS156182 battery, featuring Absorbed Glass Mat (AGM) technology, is engineered for exceptional resistance to shock and vibration, making it ideal for demanding applications.
Shock & Vibration Resistance (9/10)
Testing Procedure
Test Setup: The battery is securely mounted onto a vibration test system, such as a shaker table, ensuring that the mounting replicates real-world usage scenarios.
Vibration Testing: The battery undergoes vibration profiles based on standards like IEC 60068-2-6, simulating conditions it may encounter during operation or transportation.
Shock Testing: Shock tests are performed by applying half-sinusoidal pulses along three orthogonal axes, as outlined in standards such as UN 38.3 and SAE J2464.
Monitoring: Throughout the tests, the battery’s voltage, temperature, and structural integrity are continuously monitored to detect any signs of failure or degradation.
Durable Design (8/10)
The Mighty Max YTX4L-BS156182 battery, featuring Absorbed Glass Mat (AGM) technology, is engineered for durability and reliable performance across various applications.
Durability Testing Procedures
Vibration Testing: Simulates real-world conditions by subjecting the battery to frequencies experienced during transportation and operation, ensuring mechanical integrity.
Shock and Impact Testing: Evaluates the battery’s resistance to sudden impacts and mechanical shocks, mimicking scenarios like drops or collisions.
Compression Testing: Applies pressure to assess the battery’s structural resilience under load.
Environmental Stress Testing
Thermal Cycling: Exposes the battery to extreme temperatures ranging from -68°C to 190°C to test performance under thermal stress.
Humidity Exposure: Assesses the battery’s resistance to moisture and potential corrosion.
Electrical Durability Tests
Load Testing: Applies a specific load to evaluate the battery’s voltage stability and capacity under operational conditions.
Accelerated Life Testing: Simulates prolonged usage in a condensed timeframe to predict long-term performance and identify potential failure modes.
In The Box
FAQs
What types of vehicles is the Mighty Max YTX4L-BS battery compatible with?
The Mighty Max YTX4L-BS battery is designed for a variety of powersport vehicles, including ATVs, motorcycles, dirt bikes, snowmobiles, and personal watercraft. Its compact size and reliable performance make it suitable for models requiring a 12V 3Ah battery with 50 Cold Cranking Amps (CCA).
Is the Mighty Max YTX4L-BS battery maintenance-free?
Yes, this battery utilizes Absorbed Glass Mat (AGM) technology, making it spill-proof and maintenance-free. It comes fully charged and sealed, ready for installation without the need for electrolyte refilling or regular maintenance.
Can the Mighty Max YTX4L-BS battery be mounted in any position?
Absolutely. Thanks to its AGM design, the battery is vibration-resistant and can be mounted in various positions without compromising performance, offering flexibility for different vehicle configurations.
What is the warranty period for the Mighty Max YTX4L-BS battery?
The battery is backed by a 30-day refund policy and a full 1-year warranty, providing assurance of its quality and performance.
Final Thought
The Mighty Max YTX4L-BS156182 battery stands out as a reliable and cost-effective power source for various powersport applications. Its compact design, weighing approximately 2.93 lbs, and dimensions of 4.40 x 2.75 x 3.42 inches, make it suitable for ATVs, motorcycles, dirt bikes, and snowmobiles. The battery’s 12V 3Ah capacity and 50 Cold Cranking Amps (CCA) ensure dependable starting power, even in challenging conditions. Utilizing Absorbed Glass Mat (AGM) technology, it offers maintenance-free operation, resistance to shocks and vibrations, and flexibility in mounting positions. While it may not match the higher capacity of larger batteries like the Weize YTX14-BS, its affordability and performance make it an excellent choice for smaller engines and seasonal use.
