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Yes, I understand... on another note, I think I might be able to squeeze in a couple of 250w (voc 22.8v). Would they play well with my 100w (voc 22.5v) panels?

currently using 4-100w, a 4210, a 2000w inv. and a 230ah lfe, soon to be 460ah

Is this my best/only option for wiring 6-100w panels together?

I have a 40A controller... it's a 4210AN

I did some experimenting yesterday... (see file) Your thoughts on the results, please.

The charger I am referring to is an external 20a battery charger... not a SCC.

This may sound crazy, but I purchased a 20a charger for my 4x100w, 230ah system, but now I am not sure when it would be useful... any ideas? Or should I just send it back.

No, it's electric...

Yep, got one! :)

Thank you both for your advice, learning (trying to learn) about solar is really facinating to me. My need for solar is very small. Living in a MH with frequent power outages that can last for days, my primary concern has been our fridge. Not really an option to add more panels, so will have...

Realizing now that 400w of solar is barely enough to charge this battery, would it be foolish to entertain the idea of purchasing an additional 230ah battery so as to increas my "days of autonomy" ?

Thank you for this explaination this definately helps my understanding of what is going on. That said, I have made the following changes based on the forum's advise: Charge Limit = 14.0v Equalize Charging = 14.0v Boost Charging = 14.0v Float Charge = 13.5v Even though we have another cloudy day...

Thank you for this explaination this definately helps my understanding of what is going on. That said, I have made the following changes based on the forum's advise: Charge Limit = 14.0v Equalize Charging = 14.0v Boost Charging = 14.0v Float Charge = 13.5v Even though we have another cloudy...

The battery is: LiTime 12V 230Ah Plus Low-Temp Protection Deep Cycle LiFePO4 Battery, Built-in 200A BMS

Thanks, that's what I am hearing.

Let me start by saying thank you for taking the time to help me with this, I really do appreciate it. Going from SLA to LiFePo4 is a whole new ball game for me. This new battery is: LiTime 12V 230Ah Plus Low-Temp Protection Deep Cycle LiFePO4 Battery, Built-in 200A BMS... I realize that it...

New battery: 12v Lifepo4 230ah - solar charge to 14.6v - resting voltage 13.8v until sun goes down... however at night the voltage drops to 12.8. Is this normal? My system: 4x100w panels, Epever 4210an controller, MT-50. My charging parameters are:

Have epever 4210an but did not buy the mt-50... I am going to purchase lifepo4 soon, and wondering if the user1 configuration is ok without making any changes to parameters?

Yes, well I would love to jump into the LiFePo4 arena, but just not ready to make that commitment yet. I have seen all of Wills videos and he really gets me excited to go down that road... I would love to be 100% solar, however now is not a good time for us. The wife was just diagnosed with...

6-months in RV, then back into the house. The current batteries (optima Blue top) lasted 5-years.

Thank you for the quick response... I will start searching for best prices on golf cart batteries. :)

I need to purchase 2-batteries for the 4-100w panels I have. I have a budget of $500 I am considering 2-RENOGY DEEP CYCLE HYBRID GEL BATTERY @ $250 each. Another option is 2-Duracell Ultra BCI Group 24M Deep Cycle Marine & RV Battery @ $99 each I like the idea of "maintenance-free" batteries...