question

joao-lima avatar image

conflict between 1200w / 12v multiplus and two 100Ah superpack batteries each.

I have a question about possible conflicts in the use of the multiplus 1200w/12v and the 2 superpack batteries of 100A each. in a motorhome.

my consumption spreadsheet is:


quant Watts volt Amps Amps in CC (12V) hour Wh Ah
Laptop Charger 1 65 230 0,3 5,2 2,0 130 10,4
mixer 1 700 230 3,0 55,8 0,2 140 11,2









USB 1 50 12 4,2
1,0 50 4,2
fridge 1 45 12 3,8
10,0 450 37,5
light 2 5 12 0,4
3,0 15 1,3
pump 1 42 12 3,5
0,5 21 1,8
exaust 1 40 12 3,3
1,0 40 3,3





total
846 70







Wh Ah


My friend commented that: I may not be able to use them (batteries) with the Inverter, as it is very discharged for these particular batteries. Batteries have a continuous discharge capacity of 50A, while the inverter can consume up to 100A if it is fully charged. I will not damage the battery, as it can withstand a peak discharge of 100 A, but it is for a short period of time, so I will be able to find out that the internal controls will be activated and therefore will shut down the inverter. He recommends using the Smart Lithium line as an alternative and the external BMS. Is that correct? Would it be better to switch the batteries to the smart line? I chose superpack batteries because they are cheaper and have BMS included. What would be better, changing the batteries or changing the multiplus, if possible?

MultiPlus Quattro Inverter Chargerwiring diagramSuperPack
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1 Answer
wkirby avatar image
wkirby answered ·

If my understanding is correct, then you want to connect two Superpack batteries in parallel?
With two of these batteries connected in parallel, then the discharge limits can be doubled.
So, normal discharge capacity will be 100A and the peak will be 200A,

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