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I purchased 4 200ah LifePO4 batteries. My plan is to top them each off individually prior to hooking up in parallel to my Victron 3000 Inverter/Charger. Will the IP65 15A work even though it is rated up to 150ah? I was thinking it may take a little longer but still top the battery off. Once each are topped off then the 3000 will keep them charged. What do you think?
It will charge your batteries just fine either individually or paralleled.
Ensure that it is set to a suitable LiFePO4 charging profile.
Our motorhome has 2x 4 cell 300Ah LiFePO4 batteries in parallel.
Although rarely used the Victron IP22 30A charger is set to charge at 15A and easily tops them up overnight (4pm - 8am) if the sun has not shone all day.
Our typical daily draw is 120-150Ah.
If all the batteries are to be connected in parallel (4P) then you would not need to 'top them off' provided the rest voltage of each is the same +/-50mV. If connecting in 2S2P (24V) then charging to 80% say 3.4V per cell, would ensure that all are at very similar SOC.
