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--- electrical:12v:battery_capacity [2025/06/24 19:07]
frater_secessus [C notation]
+++ electrical:12v:battery_capacity [2025/06/24 19:12] (current)
frater_secessus [C notation]
@@ Line 6: / Line 6: @@
-Note:  most deep cycle manufacturer's rate capacity at C/20 (0,05C), due to Peukert effect on lead chemistries (see below).((Lithium doesn't not have a significant Peukert effect.  Capacity measured by C/20 and by amp-counting will be nearly identical)).  In other words, a 100Ah battery will deliver 100A with a 5A load over 20 hours.
+Note:  most deep cycle manufacturer's rate capacity at C/20 (0.05C), due to Peukert effect on lead chemistries (see below).((Lithium doesn't not have a significant Peukert effect.  Capacity measured by C/20 and by amp-counting will be nearly identical)).  In other words, a 100Ah battery will deliver 100A with a 5A load over 20 hours.
 ===== Examples =====
-If you have a 200AH battery bank then C = 200AH.
+Assuming a 200Ah bank:
-If the manufacturer recommends max //charging// at C/5 the rate should be at or below 40A (200/5). \\
+  * If the manufacturer recommends max //charging// at 0.2C the rate should be ≤40A (200 x 0.2)
+  * If the manufacturer recommends minimum charging at C110 the rate should be ≤20A (200 x 0.1)
-If the manufacturer recommends minimum charging at C/10 the rate should be at or above 20A (200/10). \\
+  * If the manufacturer recommends max //discharge// (load) be 3C the rate should be ≤600A (200 x 3)
+  * If the manufacturer says that [[electrical:12v:charging|Absorption stage]] is complete when charging current current has dropped to ≤0.05C then the current to watch for would be ≤10A (200 x 0.05)
-If the manufacturer recommends max //discharge// (load) be 3C the rate should be at or below 600A (3x200). \\
-If the manufacturer says that [[electrical:12v:charging|Absorption stage]] is complete when charging current has dropped to C/100 or C/200 then the current to watch for would be 2A (200/100) or 1A (200/200).
 ===== other than 20hr rates =====

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