I found the off-grid garage youtube channel of value in helping me with understanding. I also have a system where I am only using roughly10% of its battery capacity. The video titled: "Charging LiFePo4 (LFP) to 3.4V and 3.5V with and without Absorption. What a difference!" is the one I am...
The 250-300a value came from 18650 battery store with regard to what size bms to look for.
I read about the pre-charge resistors; any guidance on a specific bms and rough wiring schematic that would get me there. Am I on the right track? Ie; Build this batter with bms, kind of like a drop in...
Looking to understand how to set up charge controller -
DIY Battery: LF280K - 16 cell configured for 48V system with Overkill BMS - 18650 Grade A cells
Charge Controllers - 2 Midnight Classic 200's - both running 2 strings of 6 panels rated at 380w each panel (12 panels x 380 = 4,560 watts)...
I live right over the MT line in Troy.
You are on the right track with the propane appliances imo.
My push - consider a diy280ah lithium battery at 48v. Led lights. Gasoline predator inverter generator and aftermarket charger (typical chargers with a smaller inverter charge too slow). Pay...
Looking to understand how to set up charge controller -
DIY Battery: LF280K - 16 cell configured for 48V system with Overkill BMS - 18650 Grade A cells
Charge Controllers - 2 Midnight Classic 200's - both running 2 strings of 6 panels rated at 380w each panel (12 panels x 380 = 4,560 watts)...
Figured out what happened in my above scenario and caught the calculations to correct:
1) With the switch from the 150 to the 200 controller, the input breaker was undersized. IE: Hypervoc state would exceed 150v rating on breaker that came with. Each charge controller needs its own circuit as...
Schneider SW4048 a/c output voltage too high - around 128-129 vac. Triggering random warnings that exceed the default 135 vac setting when a larger load is applied (microwave). I can't find any way to adjust the voltage output on the inverter down. Past threads here asking about it without...
You are on the right track. Step up and down converters will be needed; you will want to check the consumption of each of those before buying.
AGM batteries are likely a good choice (unless you are buying new and intend to have this a long time whereas you might want to consider something like...
In the process of adding a 2nd midnight 200 charge controller to a pre-wired Schneider sw4048 currently running a single midnight 200 purchased from a reputable on-line seller.
My question - when they sent me the 2nd charge controller, I also asked for 2 more breakers. Instead of sending me 2...
Yes, can you please elaborate? Just a crappy inverter or bad because of battery choice? I have one in a cabin now that serves everything needed very well - wanted to switch but need 240 single for well and needs overall are small.
Looking for a BMS to use with a SW4048 and EVE LF280K batteries - hoping given this is a common inverter type that someone has crossed this bridge already. 48V system - figure around 250-300 amp. I am not overly techy & new to LiFePO4 - would be grateful for some steering in the right direction...
Have a Schneider 4048 and midnight Solar charge controllers. Looking at building another system using one of the Victron inverters that are integrated with the charge controller and running off of a diy build lf280k cells, using a harbor freight quiet 9500 for gen power & 4k of panels. Anyone...
Very helpful Mr. Eggo! Grateful for you!!
Quoting from Midnight solar:
"Many Lithium systems want charging to stop @ a voltage and start back @ a voltage. This would be accomplished by setting the ABSORB TIME to 4 minutes (3 minutes is the lowest setting) and using the REBULK Voltage to...