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--- electrical:solar:frugal [2018/06/16 20:34]
frater_secessus [charge controllers]
+++ electrical:solar:frugal [2018/06/16 22:08]
frater_secessus [batteries]
@@ Line 35: / Line 35: @@
 ===== batteries =====
+First off: box store marine, dual-purpose or "deep cycle" batteries are [[electrical:12v:deep_cycle_battery#chain_store_batteries|not deep cycle]].  Can you use them if you already have them?  You bet.
-FIXME
+There is no magic way to increase the limited //performance// (capacity) of these batteries, but you can help them last longer.  Those with removable caps can be [[electrical:12v:charging#watering_batteries|watered]], which will extend their useful life.
+Drawing them down to only 80% State of Charge (also written as [[electrical:depth_of_discharge|20% Depth of Discharge]]) instead of deep cycle's 50% SoC may double their lifetime.  Secessus calls this [[electrical:solar:shallow_cycling|"shallow cycling"]].
+If you don't have a spare battery you can even [[electrical:solar:shallow_cycling|use your starter battery]] with various levels of success.
 ===== converter =====
 FIXME

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