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Charging rate


johans9

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Hi all. Hope all is well.

I am busy upgrading my system

2 x 5kw OG 5.48+ kodak inverters in parrallel

3x mecer 5kw batries connected to one inverter

1x kodak 5kw batery connected to other inverter

12x 555watt pannels

What should the charging rate be set to ?

 

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41 minutes ago, johans9 said:

x 5kw OG 5.48+ kodak inverters in parrallel

3x mecer 5kw batries connected to one inverter

1x kodak 5kw batery connected to other inverter

If the inverters are in parallel, then so should your batteries be in parallel and with 20kW's worth of batteries in parallel, you can probably charge with 10kW, but I'd look and see what Kodak and Mecer specify for their batteries, I guess if the Mecer are 15S and the Kodak is 16S, then you are snookered somewhat, still, my suggestion would then be to run with the 3 Mecer batteries paralleled up, feeding both inverters...

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Why are you paralleling the inverters? Normally one would do this when one has power draw exceeding the capacity of one inverter, then you have to be able to supply both inverters from the same source/batteries, else in your scenario, one inverter's single battery could shut down, since its run flat and so will that inverter shut down also and then the one with the 3 batteries, even though it may still have 60+% energy remaining in the batteries could likely trip, since your load is more than 5kW, which is not what it can manage...

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20 hours ago, johans9 said:

Reason for parraleling inverters is to ba able for more pannels, want to add xstra 12 later on

ok, but having more panels would be beneficial for charging batteries and covering the load, if the batteries are not shared between the 2 inverters, then sharing the load between them would be problematic, since ideally, I'd imagine the load should be shared equally between the 2...

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