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--- electrical:solar:slim_reserve [2018/06/23 17:07]
frater_secessus [fractional reserves]
+++ electrical:solar:slim_reserve [2019/05/07 23:47]
frater_secessus [fractional reserves]
@@ Line 4: / Line 4: @@
 Running slimmer-than-normal battery reserves saves space, money, and weight.  Here we discuss some ideas about reducing calculated reserves.  For purposes of illustration, we will assume the vandweller's daily power requirements are 100Ah, and that they are using lead chemistry batteries.
+[[electrical:solar:sizing#your_reserve_needs|Days of reserve calculations]] usually assume //poor solar harvest// == //zero solar harvest//.  In reality this is almost always incorrect;  //some// solar power is harvested even under dark overcast or rainy conditions.
+> In light-colored full overcast I see yields 25% of usual.  In dark full overcast, as when storming, I see yields 10% of usual. -- secessus
 ===== fractional reserves =====
-Days of reserve calculations usually assume //poor solar harvest// == //zero solar harvest//.  In reality this is almost always incorrect;  //some// solar power is harvested.
+A fractional reserve might be a half- or quarter day of battery reserve.  This takes into account the (reduced) contributions from your solar, alternator, etc.  It may also require going into voluntary [[electrical:solar:rationing|power-rationing mode]] when solar output is very low.
-FIXME
+[[electrical:solar:overpaneling|Overpaneling]] [[electrical:solar:panel-bank_ratio|2:1]] or so will help gather more solar energy when running slim reserves.
 ===== zero reserves =====

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