Need help. Epever charge parameters.

[Deep woods warners]

Need help setting up my epever charge controller for 4 12v flooded lead acid deep cycle batteries. I currently have it setup generically and know its not right.

Panelas are : 3s2p
Batteries are : 4p interstate srm27
Charge controller is :
Epever tracer10415an
100amp
150v

[Mike90250]

Are your batteries wired for 12,, 24, or 48V ? Really, your manual should cover that setup .

[Deep woods warners]

Are your batteries wired for 12,, 24, or 48V ? Really, your manual should cover that setup .

12volt 4 batteries setup in 4p. The manual says to select flooded for the generic setting. It offers custom/user settings for better charging.

[Mike90250]

4 parallel batteries - check this out for best wiring http://www.smartgauge.co.uk/batt_con.html

Now your batteries came out of a factory, and to improve on the charge controller Generic setting, each factory has specific settings for each line of batteries they make. Once you discover the battery Mfg and their settings, that's what you use.

I'll guess those 4 batteries are each about 120ah (size Group27) and to properly charge the bank, you will need about 50A from the solar, in order to charge them fast enough to prevent a slow six months death from sulfation. That means your Charge Controller needs to harvest about 700w of power, and you would need about 1,000w of panels to get that !

[Deep woods warners]

4 parallel batteries - check this out for best wiring http://www.smartgauge.co.uk/batt_con.html

Now your batteries came out of a factory, and to improve on the charge controller Generic setting, each factory has specific settings for each line of batteries they make. Once you discover the battery Mfg and their settings, that's what you use.

I'll guess those 4 batteries are each about 120ah (size Group27) and to properly charge the bank, you will need about 50A from the solar, in order to charge them fast enough to prevent a slow six months death from sulfation. That means your Charge Controller needs to harvest about 700w of power, and you would need about 1,000w of panels to get that !

Fair enough. Guess I was hoping for more help in the programing area. Iv looked everywhere and can't find the info. My system will generate well over that need.

[Mike90250]

First, you need the Mfg's specs for the battery,

https://www.interstatebatteries.com/products/SRM-27

600 Cold Cranking Amps (CCA)
88ah ( so you only need 35A charging for the bank )
no other data

https://www.interstatebatteries.com/support/golf-cart-battery-installation-and-maintenance

about 1/3 way down is a chart with charging specs & bolt torque specs
Equalize is only done 1x a month, or less, and only after a complete Absorb cycle

That's about all they have. Your batteries are a bastard cross between a starting battery and a deep cycle battery

[Deep woods warners]

First, you need the Mfg's specs for the battery,

https://www.interstatebatteries.com/products/SRM-27

600 Cold Cranking Amps (CCA)
88ah ( so you only need 35A charging for the bank )
no other data

https://www.interstatebatteries.com/...nd-maintenance
about 1/3 way down is a chart with charging specs & bolt torque specs
Equalize is only done 1x a month, or less, and only after a complete Absorb cycle

That's about all they have. Your batteries are a bastard cross between a starting battery and a deep cycle battery

Sucks just needs these to last till my lifepo batteries come in.
right now I have zero clue what to do with the rest of the settings. Like float charge and all the others. This is what iv been fighting.
any recommendations? And thankyou for sticking with me.

[Mike90250]

So, until you thoroughly understand how to charge FLA batteries, which are quite forgiving, your LiPo batteries don't stand a chance.


Use the chart to program your controller. If your controller does not have custom programming, I strongly suspect you will need a configurable & Interactive with the battery BMS, to charge the LiPo battery.
Golf Cart Battery charging:

interstate golf cart charging.gif

And here's a chart that explains the different stages of charging. Usually, a BMS is a backup safety for the batteries and must interact with the charger to
throttle the charger back when the battery is full. Your panels can deliver many many amps, a BMS can only bypass/shunt 1 or 2 amps

MS_charge_stages.png

Stage 1 = Bulk
Stage 2 = Absorb
Stage 3 = float
Many solar installs will never reach float because there often is not enough sun hours to get a full charge. Batteries will suffer from this.

[Deep woods warners]

So, until you thoroughly understand how to charge FLA batteries, which are quite forgiving, your LiPo batteries don't stand a chance.


Use the chart to program your controller. If your controller does not have custom programming, I strongly suspect you will need a configurable & Interactive with the battery BMS, to charge the LiPo battery.
Golf Cart Battery charging:

interstate golf cart charging.gif

And here's a chart that explains the different stages of charging. Usually, a BMS is a backup safety for the batteries and must interact with the charger to
throttle the charger back when the battery is full. Your panels can deliver many many amps, a BMS can only bypass/shunt 1 or 2 amps

MS_charge_stages.png

Stage 1 = Bulk
Stage 2 = Absorb
Stage 3 = float
Many solar installs will never reach float because there often is not enough sun hours to get a full charge. Batteries will suffer from this.

Thankyou. This help alot. Soon ill have all 35 panels up and the rest of my controller's.
I'm lifepo batteries will be a new curve. But ill learn it none the less. As a engineer I pickup quick. Thankyou for all the help.