Battery-powered vertical lifts are becoming increasingly popular with construction crews, as they are more compact, easily maneuverable, and provide a higher degree of safety than traditional ladders and scaffolding.
To ensure reliable operation, it’s important for crews and rental facilities to utilize the proper deep-cycle batteries that power them. Some companies like Skyjack, JLG, Snorkel, and others, come equipped with four of our 6V flooded lead-acid batteries that feature quick fill caps that allow for easy inspection and water replenishing. Over several years of operation, vertical lift manufacturers recommend utilizing the same type of replacement batteries to ensure proper operation.
Models such as Skyjack’s popular SJ12 feature U.S. Battery model US2200 XC2 6V deep-cycle batteries that provide a 232 amp-hour rating at a 20-hour rate, that is also designed to provide the highest rated capacity and fastest time to cycle up to rated capacity than any other deep-cycle battery in its class. These batteries also feature U.S. Battery’s SpeedCap design, making it easy to check water levels and to conduct routine maintenance, which includes checking water levels and topping off each cell to the battery manufacturer’s recommended levels as needed.
Proper maintenance also includes visual inspections that require looking for clean terminals and wiring, then making repairs as necessary. Performing regular equalization charges at least once per month is also an important part of a proper maintenance routine that can prevent stratification and extend the service life of your batteries.
In addition to getting the right replacement batteries, the depth of discharge and regular maintenance are also key to making your vertical lift’s batteries last longer. Starting with a higher quality battery, such as what the vertical mast originally was equipped with, is a good start. It’s best to follow-up with ensuring that the batteries are limited to being discharged at no less than 50-percent. A 50-percent Depth Of Discharge (DOD), can be determined by first applying a full charge to the batteries, and the run time increases, regularly check the state of charge with a simple hydrometer. Battery manufacturers typically have a specific gravity chart that shows what the hydrometer will read at full charge, and also identify when it reaches various percentages of discharge. Periodically checking the hydrometer readings will give you a good idea of how much run-time the batteries can operate before reaching 50-percent discharge. Charging the batteries at this level, or before 50-percent DOD, will greatly promote longer service life.
With the right set of replacement batteries and routine maintenance, many construction crews and equipment rental facilities report that they have averaged five to seven years out of their batteries.