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--- opinion:more_power [2025/05/05 09:53]
frater_secessus [define the problem]
+++ opinion:more_power [2025/05/05 12:07] (current)
frater_secessus
@@ Line 1: / Line 1: @@
 DRAFT
->> “It is cheaper and easier to use less power than it is to make more power.” – highdesertranger
+> “It is cheaper and easier to use less power than it is to make more power.” – highdesertranger
+> ...the //why// is important. If you are trying to **meet a specific performance goal** you can save money by identifying performance bottlenecks and upgrading the relevant components. If you want to do the upgrades because they sound like **a fun project** then throw all the parts at it you want with my sincere blessing. I certainly am not immune to fun projects. -- secessus((https://www.reddit.com/r/RVSolarPower/comments/1keb0or/dc_to_dc_questions/mqq64ma/))
 ====== upgrading an existing power setup ======
 So your existing [[electrical:12v:intro|power setup]] isn't meeting needs and you want to change it.  Maybe your [[electrical:12v:dailypowerrequirements|daily power requirements]] have increased, you bought [[opinion:frater_secessus:prebuilt_van|a pre-built]] van, or your use case has changed.
@@ Line 19: / Line 31: @@
 [[opinion:frater_secessus:pareto|about these summaries]]
+===== big picture:  how close are we to the goal line? =====
+* if your existing system usually meets needs but sometimes falls short in anomalous circumstances
+* if your existing system is **close to meeting needs** (like within 10% of hitting [your daily power requirements](https://rvwiki.mousetrap.net/doku.php?id=electrical:12v:dailypowerrequirements)) then for several reasons a LiFePO4 swap has a good chance of closing that gap with no other changes needed.
+* if your existing system is **far from meeting needs** then other upgrades would be required.  Solar, as you say, and/or replacing any existing relay/isolator with an actual DC-DC.

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