HI 

 

I have a Victron 5Kw inverter installed we recently bought a second Freedom E Tower Lithuim battery. We installed as per manual. Currently our first battery is connected to the positive and negative it was suggested to us to move either positive or negative to the second battery to ensure power goes to both batteries ? Is this correct ? Also i want to know that because i have two batteries will the first one use power (during LS (Loadshedding) and if it reach its limit then only will the second one kick in ? 

Still new to this and just need to understand the system . Thanks 

Pic below if how it was recommended to us . 

3 minutes ago, Barbara said:

I have a Victron 5Kw inverter installed we recently bought a second Freedom E Tower Lithuim battery. We installed as per manual. Currently our first battery is connected to the positive and negative it was suggested to us to move either positive or negative to the second battery to ensure power goes to both batteries ? Is this correct ?

It's correct. It's done to make sure that the current flows equally through the two batteries. Do not shorten which ever lead you move to the top battery in the stack.

4 minutes ago, Barbara said:

Also i want to know that because i have two batteries will the first one use power (during LS (Loadshedding) and if it reach its limit then only will the second one kick in ? 

The Victron should see two 5kWh batteries in parallel as a single 10kWh battery. The two should charge and discharge together.

Other people will also confirm - but yes as far I am aware your pic with the changes, is the correct way to wire it up.

3 minutes ago, Douw G. Gerber said:

Other people will also confirm - but yes as far I am aware your pic with the changes, is the correct way to wire it up.

However, shown like this on their website 🙂 

 

 

Edited February 6, 20233 yr by Douw G. Gerber

yes that's all i got as well i did not want to damage a R38k battery 🤔😉 i just wanted to make sure thanks alot for your help

3 minutes ago, Barbara said:

yes that's all i got as well i did not want to damage a R38k battery 🤔😉 i just wanted to make sure thanks alot for your help

You wouldn't damage it per se - but they would go out of balance from what I understand - when adding the second battery I have read its a good thing to disconnect the original when at 100% and then charge the new one to 100% and then hook up both - it will balance itself over time though anyway probably

 

15 hours ago, Douw G. Gerber said:

However, shown like this on their website 🙂 

 

 

Yes. From Freedom Won's own documentation: "The supplied 35mm cables to connect to the inverter must be connected to the top eTower module". 

So please ignore my earlier post @Barbara. What you describe is recommended in most cases, but not for Freedom Won. Stick to their recommendations to put yourself in the best position should you have to make a warranty claim.
 

Either way, for me, the feeds to the inverter looks a bit on the lite side. Either double up, (as per the 4 high tower photo), or increase the cable to 70 mm2.

Also remember to adjust your charging and discharging current max settings on your inverter, to take proper advantage of the additional battery. If you add one battery, the current has effectively halved for each battery.