I am trying to decide on which Battery and Charging system I should upgrade to in order to achieve significantly*better off-grid battery life/performance, i.e. being able to run my refrigerator, water pump, TV , miscellaneous (LED) lights , USB charging iphones and the like for 2-3 days without having to use the Generator/Engine in shady / no Sun environments, and 4-5 days when in full sun (desert ).*
Here is what I currently*have in my*2018 Interstate GT:
4 12 V AGM batteries ( upgraded within the first 2 month of ownership from 2 to 4 batteries after I noticed that my 2 batteries only lasted a day or two. Initially I saw some improvement, but within the last 6 month is has degraded so bad - I can't even make it thru 24 hours without having to restart the engine or run the compressor/
3 x 100W Solar panels
Atkinson Sunexplorer 25AMP Charge Controller & Display Kit ( PVCM250D & SEDM4-LC
Magnum Energy 1000W Inverter / Charger with 20AMP AC transfer capability and a 50-AMP 4 stage Power Factor Correction (PFC) charger - Model MMS1012 and Magnum ME-MR remote control.
5.0 CU FT Nova Kool Refrigerator*w 1.6 CuFT Freezer Drawer - Model RFU7300D - rated power consumption 3.5 A per compressor
What I am contemplating:
Option 1 - 6v AGM
2 or 4 (???) 6 V AGMs - either Interstate Group GC2 - GC2-ECL-UTL RC 447 Weight 62 Ibs or GC2-HCL-UTL* RC 383 Weight 58Ibs or FullRiver DC224-6 RC 441 Weight 67.9 IBS* ( THe Fullriver cost almost twice as much as the interstate- is there justification for that? Would 2 6v be enough or should I go with 4 ?
Victron Solar Charger (which model???)* because**I suspect that my Atkinson Sunexplorer* Charge controller* (PVCM25D) stopped working. I say suspect as I have no idea nor means to actually troubleshoot it. The matching Display Kit (SEDM4-LC) does not show any information but is backlit
3000 W Inverter/Converter???
Option 2 -
12v Lithium LiFEPO4
2 Battle Born or 4 ? 100Ah
12V GC2 LiFePO4 Heated Battery Kit*(seems to fit better into the existing trays underneath the Sprinter) or 100 Ah
12V LiFePO4 Deep Cycle Battery or 270 AH* GC3 (would have to go inside)
Victron Solar Charger (which model???)
3000 W Inverter/Converter ???
Other ??*
Thank you very much in advance
PS: I am not a DIY guy, so I am also soliciting capable installers in WA, preferable WEST WA