question

burgboy avatar image
burgboy asked

Looking to add 3 lithium batteries to my lead acid system. One or two dc-dc chargers?

Hello I currently have a set of lead acids charged by solar panels. Im trying to add in a set of lithiums to the array. Does anyone know if dc-dc chargers only work one way? Or perhaps I need two? The idea is to have two different chemistries and be able to charge and use them at the same time without needing to switch manually.

Lithium BatterySolar Paneldc system
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2 Answers
taylortops avatar image
taylortops answered ·

DC-DC is one way. You'll need some kind of charger for each. Are the two batteries joined on the load side or are they doing different jobs? If shared, can you automate the load switching? eg Cerbo or BMV

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kevgermany avatar image
kevgermany answered ·

It's not ideal to mix chemistries. Victron have a battery combiner for this.


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