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--- opinion:frater_secessus:adding_dc-dc_charging_to_solar [2020/05/11 18:04]
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+++ opinion:frater_secessus:adding_dc-dc_charging_to_solar [2020/05/11 18:06]
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 ====== Opinion:  adding DC-DC charging to solar ======
-**Devil’s advocate proposition:**   when combined with nontrivial amounts of solar,  **DC-DC charging is a decreasing return expense**.  Normal isolator charging would do the Bulk-style heavy lifting adequately and much more cheaply.
+When combined with nontrivial amounts of solar,  **DC-DC charging is a decreasing return expense**.  Normal isolator charging would do the Bulk-style heavy lifting adequately and much more cheaply.
 **Reasoning:**  normal isolators raise the bank to  alternator voltage (Valt,  something like 13.8v, maybe higher).  The primary value of DC-DC charging is that it DC-DC upconverts voltage to reach Vabs (Pb) or to induce top-balancing via overcharge (Li).   Let’s look at the cost/benefit, assuming the 300Ah lead bank AGM absorps at 14.4v.

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