I just received a BMS-16T with a 600A shunt and 300A DCC. I have everything working well EXCEPT that during discharge (of a new 4s 12v 100Ah LiFEPO4 battery using a cheap modified sine inverter), the amperage readout on the chargery fluctutates wildly despite all my other measurements (DC and AC measurements with a Fluke; load on the inverter is a heat gun). I'm talking 2A, 3A, 3A, 3A, 7A, 59A, 37A, 3A, 59A, etc... and the real load is a constant 14-15 amps.
Charging the battery with my desktop power supply at 10 amps reads perfectly - 10 amps on the chargery.
When I take a voltage reading across the shunt, it's stable - yet the chargery is wildly inaccurate - but only during discharge with this inverter.
One thing to note is that since this is the BMS-16t connected to only 4s, I have an external power supply (plugged into household/street power) powering the chargery.
I haven't reached out to chargery yet. I also have two chargery units (and 2 DCCs) and I swapped out ALL components. Same results. I even calibrated the shunt. Any thoughts?
Charging the battery with my desktop power supply at 10 amps reads perfectly - 10 amps on the chargery.
When I take a voltage reading across the shunt, it's stable - yet the chargery is wildly inaccurate - but only during discharge with this inverter.
One thing to note is that since this is the BMS-16t connected to only 4s, I have an external power supply (plugged into household/street power) powering the chargery.
I haven't reached out to chargery yet. I also have two chargery units (and 2 DCCs) and I swapped out ALL components. Same results. I even calibrated the shunt. Any thoughts?