Battery drain - looking for help and ideas

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Igor Sakhnov

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So, swapped the battery for a new one (thanks god for AutoZone and warranty on Optima) and rest BMS. Steady state draw at 0.065A. Anyway advice on how to monitor the battery health?
 
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Igor Sakhnov

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Almost a month later, battery tester tells me that battery is 100% good, parasite draw is as 0.01A and truck was not charged with battery tender at all during the month.

THANK YOU @smurfslayer for the FORSCAN BSM suggestion!
 

marine5804

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I am having the same issue now on my 2018. I have the add stealth bumper and ridgid lights front and back. They are tied into the stock lights. I am trying to find out what is drawing. After about 5 days she is dead and wont start, reads about 3.4-4 amps. I jump it and its fine 10 mins later.
 

smurfslayer

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start pulling the inline fuses on your mods 1x1 until you achieve some stability.
 
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Igor Sakhnov

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@marine5804 - read the thread. Summary - I reverted to the original coding using forscan (originally disabled battery management to suppress auto-stop) and also re-set battery management. There was nothing wrong with the bumper / lights install :) Your situation could be different.
 
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