Solar Charger MPPT Settings for Trojan T105

[tommyleyland]

Hi all,

I have 2 x Trojan T105 6v batteries producing 12v with a capacity of 225 amps.

 

I also have a solar panel that is now actually becoming useful now the sun has come out to shine!

 

What settings should I set it at? Bearing in mind the table listed by Trojan below:

Daily Charge: 14.8

Float: 13.2

Equalize: 15.5

 

The settings on the solar controller are:

Load On (Voltage): Presuming this is the "Daily Charge" setting?
Load Off (Voltage): Presuming this is the "Float"?
PV Off (Voltage): No idea what this is

PV: Showing the current amps the solar panel is producing

 

Thanks in advance!

Edited May 6, 2016 by tommyleyland

[steve hayes]

Hi all,

I have 2 x Trojan T105 6v batteries producing 12v with a capacity of 225 amps.

 

I also have a solar panel that is now actually becoming useful now the sun has come out to shine!

 

What settings should I set it at? Bearing in mind the table listed by Trojan below:

 

Daily Charge: 14.8

Float: 13.2

Equalize: 15.5

 

The settings on the solar controller are:

 

Load On (Voltage): Presuming this is the "Daily Charge" setting?

Load Off (Voltage): Presuming this is the "Float"?

PV Off (Voltage): No idea what this is

PV: Showing the current amps the solar panel is producing

 

Thanks in advance!

I'm guessing that your controller has three pairs of connections,

1: solar panel

2: battery

3: load

 

In most cases the load output terminals are not wired up, the load on / off voltages are settings that will turn the load output on.

The Pv off voltage is the charge voltage that the panels are disconnected from the batteries

[Loafer]

Hi all,

I have 2 x Trojan T105 6v batteries producing 12v with a capacity of 225 amps.

 

I also have a solar panel that is now actually becoming useful now the sun has come out to shine!

 

What settings should I set it at? Bearing in mind the table listed by Trojan below:

 

Daily Charge: 14.8

Float: 13.2

Equalize: 15.5

 

The settings on the solar controller are:

 

Load On (Voltage): Presuming this is the "Daily Charge" setting?

Load Off (Voltage): Presuming this is the "Float"?

PV Off (Voltage): No idea what this is

PV: Showing the current amps the solar panel is producing

 

Thanks in advance!

 

Ignore 'load on/load off' unless you have something connected to the 'load' terminals. My fridge is connected to that, simply so that I can monitor its power consumption.

 

My Tracer charging settings are 14.9V boost, 14.9V float. Much has been said about Trojans and an early drop to float (during generator charging).

 

Shortly I will consider dropping the float setting to around 14.4V, since I don't really want to see 14.9V on the plates ALL DAY. A few hours per day is fine, IMHO, and is more appropriate in the darker months.

 

This was to be post #3, but as I'm on mod queue it may be a while before you read it. Sorry!

[Theo]

There you are Mr Loafer.

 

Got there by post #4!

[Loafer]

There you are Mr Loafer.

 

Got there by post #4!

 

Why thank you, Mr Theo!