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--- electrical:12v:directcharginglfp [2025/03/18 17:12]
frater_secessus [current drawn expressed as C-rate] paribus
+++ electrical:12v:directcharginglfp [2025/10/29 17:57] (current)
frater_secessus [tweaking current with resistance] emphasis
@@ Line 119: / Line 119: @@
 === lessons ===
-  -  Think twice about  direct-charging banks that have 2-3x the capacity of your alternator's rating.   If you need to do this use [[electrical:12v:b2b|a DC-DC charger]], external regulation, or current reduction with resistance as described elsewhere in this article.
+  -  Think twice about  direct-charging banks that have 2-3x the capacity of your alternator's rating.   If you need to do this use a **properly-sized** [[electrical:12v:b2b|DC-DC charger]], external regulation, [[electrical:12v:alternator_details#thermal_switches|thermal switches]], current reduction with resistance as described elsewhere in this article, etc
   - do not idle to charge.
@@ Line 127: / Line 127: @@
->> [with lead chemistries] the battery resistance [is] the large and controlling factor, **in the case of LFP, its the wiring** and the battery resistance is inconsequential. -- MechEngrSGH((https://www.irv2.com/forums/f87/alternator-burn-out-from-lithium-batteries-558284-10.html#post6433111)) (**emphasis** added)
+>> [with lead chemistries] the battery resistance [is] the large and controlling factor, **in the case of LFP**, its the wiring and the **battery resistance is inconsequential**. -- MechEngrSGH((https://www.irv2.com/forums/f87/alternator-burn-out-from-lithium-batteries-558284-10.html#post6433111)) (**emphasis** added)
 ==== NEG return through chassis ====

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