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electrical:12v:battery_capacity

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electrical:12v:battery_capacity [2017/05/26 19:46]
frater_secessus created 		electrical:12v:battery_capacity [2020/05/13 11:49]
frater_secessus [other than 20hr rates]
Line 3: Line 3:
 Battery capacity in Amp-hours is written as **C**.  This notation is most useful when talking about charging/discharging rates.   Battery capacity in Amp-hours is written as **C**.  This notation is most useful when talking about charging/discharging rates.  
  
-Examples:+Note:  most deep cycle manufacturer's rate capacity at C/20, due to Peukert effect. 
 + 
 + 
 + 
 +===== Examples ===== 
 If you have a 200AH battery bank then C = 200AH. If you have a 200AH battery bank then C = 200AH.
  
-If the manufacturer recommends max //chargign// at C/5 the rate should be at or below 40A (200/5). \\  +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 C the rate should be at or below 200A (200/1). \\  + 
-Note: the **usual charge rate** for deep cycle batteries is C/10.  Sometimes manufacturers express that Absorption stage is complete((and therefore Float should commence)) when the bank is holding Vabs with C/100 or C/200 of current.+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 at or below 600A (3x200). \\  If the manufacturer recommends max //discharge// (load) be 3C the rate should be at or below 600A (3x200). \\ 
-Note:  most deep cycle manufacturer's rate capacity at C/20, due to Peukert effect.+ 
 +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 ===== 
 + 
 +For other than C/20 loads((flooded)):
  
  
 +1 Hour = .3 \\
 +2 Hour = .5
 +3 hour = .6
 +4 hour = .65
 +5 hour = .7
 +6 hour = .75
 +8 hour = .8
 +10 hour = .85
 +12 hour = .9
 +16 hour = .95
 +20 hour = 1
 +24 hour = 1.05
 +36 hour = 1.1
 +72 hour = 1.25
 +100 hour = 1.30((https://www.solarpaneltalk.com/forum/off-grid-solar/batteries-energy-storage/11731-peukert-law-batteries-and-you#post11731))
electrical/12v/battery_capacity.txt · Last modified: 2022/09/22 12:19 by frater_secessus

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