Hi, could some please check my settings on  my inverter for my batteries. I’m looking for longevity settings not really peak performance settings. I’m more worried about the absorption, float and equalization settings as I don’t want to push the batteries to hard.. I set my charging amps to 100 because I thought it might prolong the battery life if I charge it at a lower amperage? Thoughts?

many thanks

3 x 100ah sunsynk batteries (sslb1)

8kw sunsynk inverter. 
 

running as a ups for now as I don’t have my panels installed but will probably run my essentials loads constantly from the batteries from tonight. Also is it a good idea to get your batteries to charge to 100% every day? 

Keep charge amps at or below 20amps per battery

Watch some vids that Andy at Off Grid Garage on youtube has done showing some detailed info on this very subject.

1 hour ago, WannabeSolarSparky said:

Keep charge amps at or below 20amps per battery

Watch some vids that Andy at Off Grid Garage on youtube has done showing some detailed info on this very subject.

Lower is normally better but at a 50A standard charge rate and having 3 batteries even 100A is not too high.

1 hour ago, WannabeSolarSparky said:

Keep charge amps at or below 20amps per battery

Watch some vids that Andy at Off Grid Garage on youtube has done showing some detailed info on this very subject.

So I watched an interesting video from Andy off grid garage, he stated that you could charge lithium iron phosphate to 80% at 3.4v. 
 

when looking at the specs of my batteries it says the I have 1p16s in each battery. Does this mean that I can multiply 3.4v by 16 and get a total of 54.4v and that would be a safe charging voltage per battery pack? 
 

just trying to understand what he is saying

18 minutes ago, Scorp007 said:

Lower is normally better but at a 50A standard charge rate and having 3 batteries even 100A is not too high.

It charged from 50% to 100% in a reasonable amount of time.. but like I said I’m looking at longevity here, so if I can charge at a lower amperage to get the batteries to last longer I’ll definitely explore all options. Obviously I don’t want it to take the whole day to charge but I see my project as an investment I want to protect not a project I want to use to extract every ounce of energy it has to offer. 

10 minutes ago, Derek Ramos said:

So I watched an interesting video from Andy off grid garage, he stated that you could charge lithium iron phosphate to 80% at 3.4v. 
 

when looking at the specs of my batteries it says the I have 1p16s in each battery. Does this mean that I can multiply 3.4v by 16 and get a total of 54.4v and that would be a safe charging voltage per battery pack? 
 

just trying to understand what he is saying

Once again one must be specific. Is the 3.4V after resting for a few hours or during charging?

What was the charging current while testing as the voltage is higher while charging.?

Stick to what the manufacturer recommends for voltages. Current can be lower, but won't make much of a difference once you get below 0.5C. I don't think you can even change the voltages if BMS comms is properly working.

2 hours ago, Scorp007 said:

Once again one must be specific. Is the 3.4V after resting for a few hours or during charging?

What was the charging current while testing as the voltage is higher while charging.?

While charging, he mentioned that you can charge the battery at 3.4v. this is the video I watched 
 

 

2 minutes ago, Derek Ramos said:

While charging, he mentioned that you can charge the battery at 3.4v. this is the video I watched 

Yip this is specifically for lifepo4 chemistry due to the extremely flat charge/discharge curve, as you essentially let the batteries charge at that lower voltage and absorb fully.

Most important is that the voltage is high enough for the BMS to actually balance the cells. Unless you are building your own battery and configuring the balance voltages yourself, stick with the manufacturer values.