WS-12-250 DC Power Cycling on LiFePo Batteries

[joecrowley]

Please help:
I have tried to power on two separate and brand new WS-12-250 DC by connecting them directly (with a 15A Circuit Breaker) to a 24V 100Ah LiFePo battery.

Fans will spin up, closed circuit voltage (read via multimeter) stays put. Power light comes on, and it may stay powered on long enough to boot up the http server and log in, but around that time, the switch entirely reboots itself. This is an ongoing cycle. The switch is running the latest firmware.

Any ideas? We suspect something is happening in the switch where it is not happy with the supply voltage for some reason or another.

Appreciate it,

[Julian]

LiFePo's are not like other batteries - V can't sag much, otherwise burny burny achy breaky, they have whole circuit boards in them to keep the lithium from the rapid oxidation it so desperately craves- switch may not actually be drawing enough to register on the battery's controller and it's going to sleep? I know they're usually expecting like. RV fridge compressors, loadwise;

there may be a jumper you can install, contact the manufacturer- although rapid oxidation and telecommunications cabinets do not agree with each other, had you considered a more conservative absorbed glass mat battery chemistry?

Voltage leads placed where, precisely? banana jacks on the front? ckt breaker output? input? Battery terminals?

BMS's are dark sorcery and well beyond the scope of my meager abilities, others likely to be more helpful

[joecrowley]

LiFePo's are not like other batteries - V can't sag much, otherwise burny burny achy breaky, they have whole circuit boards in them to keep the lithium from the rapid oxidation it so desperately craves- switch may not actually be drawing enough to register on the battery's controller and it's going to sleep? I know they're usually expecting like. RV fridge compressors, loadwise;

there may be a jumper you can install, contact the manufacturer- although rapid oxidation and telecommunications cabinets do not agree with each other, had you considered a more conservative absorbed glass mat battery chemistry?

Voltage leads placed where, precisely? banana jacks on the front? ckt breaker output? input? Battery terminals?

BMS's are dark sorcery and well beyond the scope of my meager abilities, others likely to be more helpful

Hi Julian,
Well I can pretty much confirm that the BMS is not cutting voltage to the circuit when the power-cycle happens with the WS-12-250 DC. I still read steady voltage at the terminals on the switch. I also have powered on other devices that take even less load, such as a Mikrotik HEX S (E60iUGS). and the device remains powered on indefinitely.
I have been using AGM deep cycle batteries for years and am trying to move to Lithium in order to increase capacity and battery life time. The idea is to deploy this setup into a solar powered remote WISP enclosure. So absorbed glass matt chemistry is a step backwards.
any other thoughts? Thanks for your input.