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--- electrical:severe_battery_use [2019/08/21 21:46]
frater_secessus [limiting the damage]
+++ electrical:severe_battery_use [2021/08/15 19:56]
frater_secessus [Intentionally severe battery use]
@@ Line 1: / Line 1: @@
 ====== Intentionally severe battery use ======
-Lead-acid chemistries prefer light cycling and full recharge between those cycles.  Infrequent excursions below the [[electrical:depth_of_discharge|50% depth of discharge]] norm will not cause much damage assuming a full charge is accomplished ASAP afterwards.
+Lead-acid chemistries prefer light cycling and full recharge between those cycles.  Lead-acid batteries are traditional cycled to [[electrical:depth_of_discharge|50% depth of discharge]] because it offers a balance between duty life (years between failure) and bank size.(("dead lead"))  Pulling the bank below 50% DoD in emergnecies will not automatically cause damage //assuming a full charge is accomplished ASAP//.
-This article is about the intentional and chronic depletion of lead-acid banks below the 50% mark.
+This article is about the intentional severe use of lead-acid banks by running them below the 50% mark, **followed by vigorous recharging** at maximal voltage.((the high end of the acceptable Absorption range.  Maybe even EQ)).  Perhaps [[electrical:12v:eternal_absorption|forgoing Float altogether]].  This might be desirable when:
+  * reducing the weight impact of lead banks
+  * one wants to make use of old/damaged batteries whose capacity has declined
 ===== how low can we go? =====
@@ Line 17: / Line 20: @@
 ===== limiting the damage =====
-Deep cycles generally extend the amount of time for a battery to complete Absorption.
-  * get power back into the battery ASAP after deep discharge;  drive for alternator charging or run a generator to get bulk stage going
+  * get power back into the battery ASAP after deep discharge;  drive for [[electrical:12v:alternator|alternator charging]] or run a [[electrical:generator|generator]] to get bulk stage going.  Solar alone //might// be sufficient but it might require meaningful [[electrical:solar:overpaneling|overpaneling]].
-  * increase Absorption time, or even set Vfloat == Vabs.
+  * fully charge lead-chemistry batteries as often as possible.  This may require [[electrical:12v:eternal_absorption|special measures to finishing Absorption]].
-  * if flooded, keep a close watch on water levels

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