03-27-2024, 01:48 PM
Tom,
I did the conversion with LifePo4 batteries just like yours to my scissors lift. There is a few things you need to consider for machinery with hydraulic pumps.
DC motors take a lot of juice to get rotating. You will need to make sure that you have enough current capacity in your BMS so that you do not max out your current draw. Steady state you probably don't have an issue, but at start the current is huge. I think my BMS is a JK brand with published 200A capacity, but if it hits 350A it will think it has a dead short even if it is for a very short time. There is a little bit I can change in the software if I ran into problems, but it worked just fine on the scissors lift.
It worked so good I made a 12V Li battery for my dump trailer, and it would not start as it saw the start load as a dead short. I had to go to JK's biggest BMS (300A) and then I was able to use keep the conversion.
The Lifepo4 batteries have no problem giving the start current, even though they are rated for 100A.
If you need a crimper to make some cables, I can bring mine to your BBQ. I might even have some lugs for the size you need. I always buy too many as they are cheaper by the dozen!
Good luck
I did the conversion with LifePo4 batteries just like yours to my scissors lift. There is a few things you need to consider for machinery with hydraulic pumps.
DC motors take a lot of juice to get rotating. You will need to make sure that you have enough current capacity in your BMS so that you do not max out your current draw. Steady state you probably don't have an issue, but at start the current is huge. I think my BMS is a JK brand with published 200A capacity, but if it hits 350A it will think it has a dead short even if it is for a very short time. There is a little bit I can change in the software if I ran into problems, but it worked just fine on the scissors lift.
It worked so good I made a 12V Li battery for my dump trailer, and it would not start as it saw the start load as a dead short. I had to go to JK's biggest BMS (300A) and then I was able to use keep the conversion.
The Lifepo4 batteries have no problem giving the start current, even though they are rated for 100A.
If you need a crimper to make some cables, I can bring mine to your BBQ. I might even have some lugs for the size you need. I always buy too many as they are cheaper by the dozen!
Good luck