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epever hybrid 5kw HI , low voltage disconnect changing parameters
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<blockquote data-quote="Ucatchmydrift" data-source="post: 549402" data-attributes="member: 35106"><p>Unfortunately i have not had any experience with agm batts, i have lifepo4 connected to my epever inverter,, but, googling agm voltage charts i can see that 0% soc is 42v and 10% soc is 46v, so id guess that 43.2v is probably less than 5% soc. As far as i remember, going below about 50% soc on a lead acid or agm (is yours agm gel?) is very bad and reduces the life cycles quickly. Personally i would have the LVD at 48.2v which is 50%. Yes, you only get 50% of the battery, but, unfortunately, agm etc are old tech.. You need twice as many or, ideally 3 times as many as you would think, as to get them to last reliably (according to most, but not all) for say 10 years, you cant really dischaege them down to more than about 80% soc, which sucks. Hence why id sell them and build your own lifepo4 and have them last 20 years discharging them down to 10-20% to be safe, and charging to about 99% soc, or wherever the voltage starts to increase rapidly... </p><p></p><p>But, 43.2v is way to low for LVD in my opinion. Youll kill them quick doing that if you hit that voltage a number of times, especially if left at that soc for a while..</p></blockquote><p></p>
[QUOTE="Ucatchmydrift, post: 549402, member: 35106"] Unfortunately i have not had any experience with agm batts, i have lifepo4 connected to my epever inverter,, but, googling agm voltage charts i can see that 0% soc is 42v and 10% soc is 46v, so id guess that 43.2v is probably less than 5% soc. As far as i remember, going below about 50% soc on a lead acid or agm (is yours agm gel?) is very bad and reduces the life cycles quickly. Personally i would have the LVD at 48.2v which is 50%. Yes, you only get 50% of the battery, but, unfortunately, agm etc are old tech.. You need twice as many or, ideally 3 times as many as you would think, as to get them to last reliably (according to most, but not all) for say 10 years, you cant really dischaege them down to more than about 80% soc, which sucks. Hence why id sell them and build your own lifepo4 and have them last 20 years discharging them down to 10-20% to be safe, and charging to about 99% soc, or wherever the voltage starts to increase rapidly... But, 43.2v is way to low for LVD in my opinion. Youll kill them quick doing that if you hit that voltage a number of times, especially if left at that soc for a while.. [/QUOTE]
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