My AGM to Lithium conversion
Here is a quick article I wrote on my adventure going from AGM batteries to Lithium. http://rvbprecision.com/rv-projects/rv-lead-acid-agm-to-lithium.html http://rvbprecision.com/rv-projects/rv-l...
Forum Discussion
"If" someone is getting lvd from the battery pack while using with an inverter or without what comes to my mind...
1. Why isn't there away to see SOC to know you're getting low?
2. Is the battery pack undersized for the task at hand.
3. Are they using economy lfp dropins with just poor quality cells or components inside.
From my experience when my SOC gets down to 25% (DOD 75%) which is always in the morning if it happens after making a couple pots of coffee, using the microwave for 5 minutes making breakfast the inverter will show 12.2v, I have a decision to make. Will solar be enough to carry my daytime loads and charge the batteries to aleast 65-70% by dinner time or should I throw the eu2200i on for an 1-2 hours for a hold over charge later in the day after solar has done as much as it can. All this is done by the ability to see what the system is doing either on the battery display or the Magnum ME-ARC display. It's not rocket science but a little proper planning in the build or revamping of the batteries will prevent piss poor performance. ;)
I believe BFL13 you're having a hard time wrapping your head around this because you've only experienced dead lead chemistry and it's poor voltage sag and the need to charge them full asap or "lose" life expectations from said batteries and transferring those poor attributes over to lfp chemistry.
1. Why isn't there away to see SOC to know you're getting low?
2. Is the battery pack undersized for the task at hand.
3. Are they using economy lfp dropins with just poor quality cells or components inside.
From my experience when my SOC gets down to 25% (DOD 75%) which is always in the morning if it happens after making a couple pots of coffee, using the microwave for 5 minutes making breakfast the inverter will show 12.2v, I have a decision to make. Will solar be enough to carry my daytime loads and charge the batteries to aleast 65-70% by dinner time or should I throw the eu2200i on for an 1-2 hours for a hold over charge later in the day after solar has done as much as it can. All this is done by the ability to see what the system is doing either on the battery display or the Magnum ME-ARC display. It's not rocket science but a little proper planning in the build or revamping of the batteries will prevent piss poor performance. ;)
I believe BFL13 you're having a hard time wrapping your head around this because you've only experienced dead lead chemistry and it's poor voltage sag and the need to charge them full asap or "lose" life expectations from said batteries and transferring those poor attributes over to lfp chemistry.
