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--- electrical:12v:drop-in_lifepo4 [2025/12/24 22:58]
127.0.0.1 external edit
+++ electrical:12v:drop-in_lifepo4 [2026/10/03 20:09] (current)
frater_secessus [BMS features and specs]
@@ Line 103: / Line 103: @@
 [not present in all BMS]
-LFP cells are damaged by charging when the cells are at ~freezing temperatures.((discharging too, but the limits are much colder))
+LFP cells are damaged by charging when the cells are at ~freezing temperatures.((discharging too, but the limits are much colder like -15° C; check your manual for specs.))
 Lack of **low temperature cutoff** is not necessarily a deal-breaker.  Maybe you live in a hot location.  Maybe your chargers have low temperature cutoff.  Maybe you externally warm your battery.
@@ Line 113: / Line 113: @@
 === high temperature charge/discharge cutoff ===
-LFP cells can be damaged by use at high temperatures, so the BMS will disable use at extreme temperatures.
+LFP cells can be damaged by use at high temperatures, so the BMS will disable use at extreme temperatures caused by ambient temps or high current rates.
@@ Line 670: / Line 670: @@
 The most popular drop-ins at various price points appear to be:
-  * premium - [[https://amzn.to/3LV85DI|Battle Born]], Lithionics
+  * premium - [[https://amzn.to/3LV85DI|Battle Born]]((but see Will Prowse's [[https://www.youtube.com/watch?v=DUtbnbLpvFk|recent series on failures]])), Lithionics
   * midrange - [[https://amzn.to/3YxGPTh|SOK]], Epoch.  And there are companies like SunFunKits that will [[https://www.sunfunkits.com/category/3/pre-built-batteries|build LFP batteries with the customer's choices of options]].
   * inexpensive - [[https://amzn.to/4cfU5Pm|Li Time]] (was Ampere Time),  [[https://amzn.to/4dwItZr|Weize]], [[https://amzn.to/4fwJhiQ|Power Queen]], [[https://amzn.to/4cgSKIj|Roypow / Power Urus]], etc

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