Differences

This shows you the differences between two versions of the page.

--- electrical:12v:charging [2023/05/28 14:44]
frater_secessus [Bulk stage]
+++ electrical:12v:charging [2023/09/16 12:22] (current)
frater_secessus [Collected recommendations]
@@ Line 56: / Line 56: @@
     * Gel 0.13C
     * Solar Premium and Signature:  0.13C when charging time is unlimited.  "If charging time is limited [like with solar charging], contact Trojan Technical Support for assistance"
+  * Renogy
+    * LiFePO4 0.2C((https://www.renogy.com/content/files/Manuals/RNG-LFP_Manual_V1.0.pdf))
+    * AGM 0.4C max((https://www.renogy.com/template/files/Specifications/RNG-BATT-AGM12-200.pdf)) unless labeled with 0.3C max
+    * GEL 0.3C((https://www.renogy.com/content/RBT100GEL12-G1/GEL100-Datasheet.pdf))
+  * Rolls((https://rollsbattery.com/wp-content/uploads/2018/01/Rolls_Battery_Manual.pdf))
+    * Flooded 0.1C
+    * AGM 0.2C (min 0.1C, max 0.3C)
+    * GEL 0.2C (min 0.1C, max 0.3C)
+  * Lifeline((https://lifelinebatteries.com/wp-content/uploads/2015/12/6-0101F-Lifeline-Technical-Manual-Final-5-06-19.pdf))
+    * AGM up to 5C inrush, 0.2C minimum((https://marinehowto.com/how-fast-can-an-agm-battery-be-charged/))
+  * Odyssey((https://www.odysseybatteries.com/odyssey/docs/us-ody-tm.pdf))
+    * AGM 0.4C minimum, no maximum
+  * EastPenn/Deka - 0.3C max((https://www.eastpennmanufacturing.com/wp-content/uploads/Renewable-Energy-Charging-Parameters-1913.pdf)) -
 ==== Absorption stage ====
@@ Line 62: / Line 74: @@
 The absorption stage, sometimes called //acceptance//((which makes sense)) or //boost//((doesn't make sense!)), is a constant voltage stage during which the battery is brought to full charge.  This stage requires a **great deal of time** but decreasing amounts of current.
-Absorption **begins when the battery reaches the absorption voltage** ([[electrical:12v:electrical notation|Vabs]], 14.8v in our example) and **ends when the battery tapers off current acceptance** to something like [[electrical:12v:battery_capacity|C/100]] ("End Absorb", "endAmps"),  and/or when a period of time has elapsed.
+Absorption **begins when the battery reaches the absorption voltage** ([[electrical:12v:electrical notation|Vabs]], 14.8v in our example) and **ends when the battery tapers off current acceptance**((that the battery is taking from the charging source)) to something like [[electrical:12v:battery_capacity|C/100]] to C/50((1A-2A per 100AH of capacity)) ("tail current", "End Absorb", "endAmps"),  and/or when a period of time has elapsed.
 Example:  if you have a 100Ah battery bank and the manufacturer states that endAmps is C/100, then the battery is fully charged when it is only accepting 1A of current((100Ah/100 = 1A)) **at Vabs**.  An endAmps recommendation of C/200 would be the battery accepting 0.5A of current.((100Ah/200 = 0.5A)) at Vabs.
@@ Line 140: / Line 152: @@
   - Float voltage - Li does not like to sit at 100% SoC,((the cells degrade faster at 100%+ SoC)) so a float voltage in the 13s allows them to come down off the peak and rest at a healthier voltage for them while still holding useful capacity.
-Also see [[electrical:12v:lifepo4_batteries_thread#charging|LiFePO4 (lithium) bare cell charging]].
+Also see [[electrical:12v:lifepo4_batteries_thread#charging|LiFePO4 (lithium) bare cell charging]] and [[electrical:12v:drop-in_lifepo4#an_approach_to_greater_longevity|thoughts about charging LFP gently]].
 ===== Equalization =====
@@ Line 247: / Line 259: @@
 | Interstate GC2((https://www.interstatebatteries.com/support/golf-cart-battery-installation-and-maintenance))                                                                                                                                                                              | Min C/10 \\ Max C/7.7((.13C))\\ Vabs 14.8v\\ Vfloat 13.5v\\ Veq 16.2v                                                                                                                                                                         |                                                                                                                                                                                          |                                                                                                                                                                                                                                                                                    |                                                                                                               |
 |                                                                                                                                                                                                                                                                                           |                                                                                                                                                                                                                                               |                                                                                                                                                                                          |                                                                                                                                                                                                                                                                                    |                                                                                                               |
+====== further reading ======
+  * [[https://web.archive.org/web/20150919125248/https://c34.org/bbs/index.php/topic,8216.0.html|Why going to float is NOT full]]

RV and vandwellers wiki

User Tools

Site Tools

Differences

Page Tools