diy solar

diy solar

MPP solar 48v lifepo4?

Guda

Guda

Superstrut Strut
Joined
Nov 19, 2019
Messages
516
What are the charge parameters for lifepo4 & how do I program it?

The manual says use the user setting 05. Okay once I am there, how do I enter the correct numbers & what are they?
 
Okay I found where to put the settings. The print is so small I thought it said page, but it was function... #Oops
I need
Bulk charge voltage
Float charging voltage
Low DC cut off voltage
 
Battery is 42.3v... Have everything hooked up correctly. I'm not getting any charge from the pv. Says 0. I don't have a 48v multi meter either. If I had something hooked up wrong there would be sparks &/or fire. No sparks or fire so I'm pretty sure I hooked it up correct.
 
Guda said:
Battery is 42.3v... Have everything hooked up correctly. I'm not getting any charge from the pv. Says 0. I don't have a 48v multi meter either. If I had something hooked up wrong there would be sparks &/or fire. No sparks or fire so I'm pretty sure I hooked it up correct.
Click to expand...
Did you change the setting to Solar first for charging or something like that?.
I think its the first setting.
Did you read the manual and go through the settings?
 
MBR said:
Did you change the setting to Solar first for charging or something like that?.
I think its the first setting.
Click to expand...
I saw that setting but no, I did not change it. Seamed like a option. I'll change it now. Almost dark but maybe enough light to get a reading.
MBR said:
Did you read the manual and go through the settings?
Click to expand...
Literally with a magnifying lens. Print is so small I was looking for pages in settings... Eyes going fast ;( Most those settings were way over my level of understanding. I just assume thats mostly fine tuning stuff.

As my battery shuts down it shows cell v & lets just say I need to get a charge to it ASAP or maybe bad things.
 
Okay so the suns down so I'll see if that was it tomorrow. I think I should have been at least seeing power coming in from the pv regardless of that setting tho.
 
Nope, didn't work. Not getting any power from pv.

This unit is supposed to be plug & play. There shouldn't be a setting that is stopping it from working. My luck is I got a bad unit.
 
Last edited:
How can a low battery stop the solar power from coming in?
 
MPP will need power from the battery to run. If it is too low, it will not start.
 
Its the pv input thats missing. I can turn it on & change settings. It turns off after a minute or 2 if I don't keep pushing buttons.

Sounds pretty catch 22 if the battery has to be x volts to charge. How do you charge a 48v battery that the charger wont charge it unless its charged...
 
Guda said:
Sounds pretty catch 22 if the battery has to be x volts to charge. How do you charge a 48v battery that the charger wont charge it unless its charged...
Click to expand...
You have to lower the setting temporarily or charge the battery some other way. Also you should lower the charging Amps until the battery gets to 44 volts.The Catch 22 is they don't expect anyone to run their battery below 44 because it is not good for the battery. How did that happen? Did it arrive that way?
 
Set it at 42v & nada. Still no power coming from pv. I bet I have a bad battery & a bad inverter charger
 
You must log in or register to reply here.

Similar threads

J
RS485 cable in USE mode on EG4-3k
Replies
2
Views
195
Jmhai3
J
S
48V to Lynx Distributor 1000 to ???
Replies
1
Views
128
Rocketman
R
J
Need help with settings for MPP Solar LV2424
Replies
3
Views
432
Jameswy
J
A
1st off-grid adventure — need charge controller advice
3 4 5
Replies
86
Views
2K
Zwy
Zwy
T
MPP Solar 3048LV-MK 48V 3kW 120V Inverter Set Up
Replies
1
Views
136
sunshine_eggo
sunshine_eggo
Back
Top