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GEN 3 (2021+) Ford F-150 Raptor Forums
Ford F-150 Raptor General Discussions [GEN 3]
Deep Sleep / Battery Issue - gauge reads 14.5v
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<blockquote data-quote="jm77" data-source="post: 1859532" data-attributes="member: 53278"><p>Give the battery a top off with a charger. I read a long time ago that the modern charging systems in cars don’t fully charge AGM batteries. I do it once a month minimum. As others have said, theres a lot of electronics in these trucks and the shorter drives don’t compensate for the draw. Make sure you connect the charger correctly, not to the battery terminals, so the system recognizes the charge. Like you said, first time was after it sat for a bit. Battery got really low and hasn’t been able to get a full charge. </p><p></p><p>I’d reset the BMS just to be safe. Easy to do, instructions are in the manual and then be sure to let it sit without waking the system up for the 12 hrs.</p><p></p><p>I’ve gotten the low battery message from time to time and attributed it to having the key too close. Even if it’s inside your house but somewhat close to the truck I’m pretty sure it keeps waking the system up and depleting the battery. I keep one of those cases that blocks radio signals in my truck and my house. Use it when camping because I can’t get the key far enough from the truck and at home to prevent theft.</p><p></p><p>Also, that 14.5 volts isn’t your battery voltage, that’s the alternator. Battery would have to be measured from the battery after letting it sit for a bit not right after charging/driving.</p></blockquote><p></p>
[QUOTE="jm77, post: 1859532, member: 53278"] Give the battery a top off with a charger. I read a long time ago that the modern charging systems in cars don’t fully charge AGM batteries. I do it once a month minimum. As others have said, theres a lot of electronics in these trucks and the shorter drives don’t compensate for the draw. Make sure you connect the charger correctly, not to the battery terminals, so the system recognizes the charge. Like you said, first time was after it sat for a bit. Battery got really low and hasn’t been able to get a full charge. I’d reset the BMS just to be safe. Easy to do, instructions are in the manual and then be sure to let it sit without waking the system up for the 12 hrs. I’ve gotten the low battery message from time to time and attributed it to having the key too close. Even if it’s inside your house but somewhat close to the truck I’m pretty sure it keeps waking the system up and depleting the battery. I keep one of those cases that blocks radio signals in my truck and my house. Use it when camping because I can’t get the key far enough from the truck and at home to prevent theft. Also, that 14.5 volts isn’t your battery voltage, that’s the alternator. Battery would have to be measured from the battery after letting it sit for a bit not right after charging/driving. [/QUOTE]
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GEN 3 (2021+) Ford F-150 Raptor Forums
Ford F-150 Raptor General Discussions [GEN 3]
Deep Sleep / Battery Issue - gauge reads 14.5v
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