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--- electrical:12v:diysmartpass [2022/09/10 12:51]
frater_secessus [how it works]
+++ electrical:12v:diysmartpass [2022/09/10 12:52]
frater_secessus [how it works]
@@ Line 18: / Line 18: @@
 The D250 provides staged (boosted) charging and the Smartpass provides Big Current during Bulk charging.((until battery voltage == alternator voltage))  The setup is pricey;  as of Aug 2022 the D250 is $328 and the Smartpass 120 is $326.  Total $654.  There are other features in this setup((jumpstarting, starter battery maintenance)) but these main features might be replicated by the approaches described below.
-There may be an additional benefit of using a small DC-DC charger + isolator:  charging current will be very high only at first when the alternator temperature is lowest and most able to handle it.((just started the engine)) And even a giant DC-DC is "wasted" when current acceptance falls.
+There may be an additional benefit of using a small DC-DC charger + isolator:  charging current will be very high only at first when the alternator temperature is lowest and most able to handle it.((just started the engine))
 ===== challenges =====

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