Topics: Battery 101, Motive Power, Transportation, Deep Cycle Batteries, Lead Acid, AGM Batteries, MEWP Batteries, AWP Batteries
Understanding the Hird Test: Benchmarking Battery Endurance for MEWPs
In the world of mobile elevating work platforms (MEWPs), battery endurance is crucial for operational efficiency and safety. Recognizing this need, Hird developed a pioneering method known as the Hird Test, which has become a global standard for assessing the battery performance of DC electric MEWPs. Let's explore the history, methodology, and significance of the Hird Test in ensuring optimal performance and reliability of these machines.
The Genesis of the Hird Test
The Hird Test was conceived in the late 1980s by Peter Hird Snr, the founder of Peter Hird & Sons after a customer raised concerns about poor battery performance. This innovative test was explicitly created for self-propelled electric articulating booms and scissor lifts, addressing a critical need in the industry. Battery manufacturers and operators worldwide have adopted the Hird Test to validate performance claims and compare against competitors.
Conducting the Hird Test: A Step-by-Step Guide
The Hird Test involves subjecting a fully-charged MEWP to a series of operational cycles until the machine shows signs of power depletion. Here’s how the test is conducted for two common types of MEWPs
- Self-Propelled Electric Articulating Booms
- Choose a clear, smooth area—preferably concrete or asphalt.
-
- Fully charge the machine overnight and complete all pre-use checks.
- Start with the machine at position A, driving it in the folded position to position B, then back.
- Elevate each boom section individually to full height, telescope out, slew the basket, and return to the
stowed position. - Record each complete cycle and repeat until the machine starts to power down.
- Fully charge the machine overnight and complete all pre-use checks.
- Self-Propelled Electric Scissor Lifts
- Drive the lift to position B, reaching maximum speed, and engage the steering motors.
-
- Lift and lower the platform to complete cycle 1, then repeat the process at position A.
-
- Continue this routine, recording each cycle until battery depletion signs appear.
- Continue this routine, recording each cycle until battery depletion signs appear.
%20(1200%20x%20670%20px).gif?width=545&height=304&name=Untitled%20(Facebook%20Ad)%20(1200%20x%20670%20px).gif)
Key Considerations
An essential aspect of the Hird Test is the caution against fully discharging the batteries, which can cause damage. A second person should be present to monitor the test and manage any emergencies, ensuring safety and accuracy.The Impact and Importance of the Hird Test
In conclusion, the Hird Test is more than just a battery endurance evaluation—it's a testament to innovation in the MEWP industry, driving advancements and setting benchmarks for years to come.
Explore the Hird Test in Action: Watch the Discover Battery Video
