Community Forums

Winterbagoal · 09-19-2022, 08:30 PM

Have any of you used the 8757UPS system (2007-2018 cab chassis model), paired with 2 100Ah LiFePO4 paralleled batteries as the power source? I'm looking to get one of these leveling systems installed, post covid, at their new location in Cassopolis, MI, and some of their install documents suggest the power source has to have at least 500CCA and 100A reserve capacity. I don't think my lithium jars will meet the 500CCA. The support folks at EQ Systems (rebranded, as well) asked their engineers about running it off a lower (200A short duration max discharge, or like mine, 280A + or - 50A for 32ms) short duration high amperage draw battery setup, and they told them that it should be fine.
Just wondering if anyone else runs one of these systems using lithium iron phosphate coach batteries. Looking for real world experience with this combination of levelers and power source.
Do they work well, or have you had problems with the battery BMS stopping the sudden high amperage discharge (like it's supposed to do)?

jaydee325 · 09-20-2022, 04:32 AM

I suggest going to Equalizer and ask for the amp draw profile of their system and provide that to your battery manufacturer along with your question.

Dodge Guy · 09-20-2022, 06:23 AM

Well most flooded batteries are only 80 Ah. The LifePo will be more. They will work just fine.

Winterbagoal · 09-20-2022, 10:22 AM

Thanks for that folks. Have already run my battery specs (from the Relion website) by the EQ engineers, and they said it should be fine, as well.
Was hoping someone had actually done this, and on another forum, I got a response from someone that has the EQ system installed and switched from FLA to high capacity lithium, and everything still works. The Lithionics battery that the other owner has, has an instantaneous pulse discharge of 1200A, whereas my Relions are only around 300A. The documents on EQ website suggest using a 150A breaker or slow blow fuse, and that their normal pump amperage ranges from 40A to 150A, so I hope it will all work fine.