Hello folks, new on here. Bought a 1999 JLG 35 that works fine, >10,000 Hours! In pretty good shape. Only issue is the 6v batteries are from 2018 and lousy. Works fine on flat land, but a 8% incline on my driveway drops the voltage from 49v to 32v in about 20 feet. Ive worked around it by making my lift a hybrid . I have a 2000w generator mounted to it, which continually charges the batteries. Works great. That said, it's time to change the batteries. a 48V 100A Lithium pack with larger is about $1000. Max draw is 200A, which is the max fuse on the lift. Are there any circuits on this lift that need LESS than 48V? Any reason this should not work? I took a voltmeter to all the controls on the boom, and they all register 48V. Is there anything on this lift that needs less volts? 24 volts? 12 Volts? Thanks all.
So, updating my own thread… Bought eight 100A lithium batteries, 12v. Will place 2 in series/2 parallel on each side, providing 24v 200 Amps. Total, 48v, 200A. Lift pulls 30A to run hydraulic pump. 60 amps or so to move it on flat land. Batteries can do 600A peak, so plenty of available amperage. Using LiTime batteries. I’ve used these with great success in my Rv. They used to be $350, now $200 or so. So, $1600 for lithium pack that should last “forever.” $200 for the charger. $100 for the pack balancer. Thats versus the cheapest option, Walmart golf cart batteries, about $1000. I can use the lithiums to power the RV, or as a solar battery bank when not used in the boom lift… More to come.
The only issue I can see is I believe some of those electric lifts use the batteries as part of the ballast/counterweighting.
Yep. Plan to add bricks/concrete/cement to make up the difference. Current pack weights 240 pounds per side. Prior owner replaced the 300 amp stock batteries (100 pounds each!) with 200A golf cart batteries, which are 60 pounds each. Then added bricks. The lithiums are 1/2 the size of the current batteries, and 1/3 the size of stock. So plenty of space to add bricks or pour in concrete…
So, works great. Pulls 30 amps to operate hydraulics. 130A to drive up a 10% grade. Well within to 200A capability of the battery. Doing the wiring took some work, creativity, and crimping. Looks excellent, fits great.