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diy solar

Adding 2X LifePo4 Batteries to Existing System

Jacob190000

New Member
Joined
Apr 12, 2021
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Hello, I currently have two 12V Valence batteries running in series (24V). I am wanting to double my capacity, and understand this should't be an issue, as long as I use the same LifePo4 batteries, and charge them to the same Voltage before connecting together. My question: Should I connect the new batteries in series together, then connect them in parallel with the older batteries, or should I mix one new and one old battery in series, and then connect those in parallel? I do understand purchasing all new batteries at the same time would be preferred, but this is currently just a hobby, and so I cannot justify the cost to do so.
 
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