I'm unsure if this is explained very clearly in the resources which has made it quite challenging . When purchasing the BMS, I based it upon the an assumption of the likely max amount of current I would draw at any one time.
My understanding is that the Amps of the BMS chosen should corresponds to the max current that is to be drawn from the batteries at any one time.
Formula
2000 ac watts / .85 conversion factor / 12 volts low cutoff = ~196 dc amps
I assume that this leaves 4amps before the BMS would shut off?
Will this mean I would need to ensure I run my inverter below max load if I wanted to allow room for DC appliances?
However, I highly doubt I would be using 2000W from my inverter while other DC appliances are running. It is likely that the only thing to be constantly running would be the fridge, and maybe lights in the evening. If I'm careful to make sure I do not exceed 200A at any one time, this system will be okay? What would be a user friendly way of monitoring the current being drawn from the batteries?
If not, can I perhaps solve this by reducing my inverter to 1000W?
My understanding is that the Amps of the BMS chosen should corresponds to the max current that is to be drawn from the batteries at any one time.
- In one of my setups, I will be using 2P4S arrangement of 272aH batteries = a 544aH pack.
- I plan to use a 2000W inverter, with a few DC appliances including lights, USB power and fridge. I am unlikely to use the full 2000W of the inverter at one time, and more likely to be below 1000W
- I have already purchased a 200A BMS
Formula
2000 ac watts / .85 conversion factor / 12 volts low cutoff = ~196 dc amps
I assume that this leaves 4amps before the BMS would shut off?
Will this mean I would need to ensure I run my inverter below max load if I wanted to allow room for DC appliances?
However, I highly doubt I would be using 2000W from my inverter while other DC appliances are running. It is likely that the only thing to be constantly running would be the fridge, and maybe lights in the evening. If I'm careful to make sure I do not exceed 200A at any one time, this system will be okay? What would be a user friendly way of monitoring the current being drawn from the batteries?
If not, can I perhaps solve this by reducing my inverter to 1000W?