Consolidating anything to do with Shoto batteries under 1 topic, for easy referencing / problem solving.

Thanks @NeilJ - this will be very useful

Daisy chaining / Parallel of Shoto batteries.

An electrician did an install of 4 x Shoto SD048100 Lithiums (as shown in the 2 pics, labelled with Master & Slaves).

I am not a qualified electrician, but don't all parallel batteries groups work the same?
Power will always take the shortest route possible, and if you look at the pics I've uploaded, he seems to be sending the positive and negative back to the battery disconnect in 2 separate chains (the 2 Shotos on the left (Master & Slave 1) opposed to the 2 Shotos on the right (Slave2 & Slave3).

Shouldn't the daisy chain work all the way through?
Shoto MASTER - positive port 2 to Shoto Slave 1, positive port 1;
Shoto Slave 1 - positive port 2 to Shoto Slave 2, positive port 1; etc
And vice versa:
Shoto Master - negative port 1 to Shoto Slave 1, negative port 1; and so on.

Then, take Master Shoto, Positive Port 1 to the battery disconnect / inverter; and Last Shoto in the group, Negative Port 2 to the battery disconnect / inverter. This will force the movement of energy to move between the entire group of connected batteries (as per last image)?

As good link I found was this for Shotos:  https://youtu.be/3gU6LR5F1TA

 

Any feedback would be greatly appreciated, as I have found that there seems to be a definite issue with this wiring and does NOT seem to be incorporating all the batteries in the group.

Best practice is to run the live from 1 battery and the negative from the other.

has anyone connected the Shoto BMS to a Kodak 72kW OG inverter?

8 hours ago, schalkvstaden said:

has anyone connected the Shoto BMS to a Kodak 72kW OG inverter?

Unfortunately this doesn't work. I have a shoto and a OG+5.48 and the problem is the shoto speaks CAN, but the Kodak (Axpert) uses RS485 when PYL, LIB or LIC are selected. Afaik the RS485 ports on the shoto can't be used for inverter comms directly.

14 hours ago, jumper said:

Unfortunately this doesn't work. I have a shoto and a OG+5.48 and the problem is the shoto speaks CAN, but the Kodak (Axpert) uses RS485 when PYL, LIB or LIC are selected. Afaik the RS485 ports on the shoto can't be used for inverter comms directly.

Shoto uses seplos BMS that can communicate to the inverter via RS485 unless Shoto have their own software that disables this. 

On 2022/12/01 at 8:37 PM, NeilJ said:

Daisy chaining / Parallel of Shoto batteries.

An electrician did an install of 4 x Shoto SD048100 Lithiums (as shown in the 2 pics, labelled with Master & Slaves).

I am not a qualified electrician, but don't all parallel batteries groups work the same?
Power will always take the shortest route possible, and if you look at the pics I've uploaded, he seems to be sending the positive and negative back to the battery disconnect in 2 separate chains (the 2 Shotos on the left (Master & Slave 1) opposed to the 2 Shotos on the right (Slave2 & Slave3).

Shouldn't the daisy chain work all the way through?
Shoto MASTER - positive port 2 to Shoto Slave 1, positive port 1;
Shoto Slave 1 - positive port 2 to Shoto Slave 2, positive port 1; etc
And vice versa:
Shoto Master - negative port 1 to Shoto Slave 1, negative port 1; and so on.

Then, take Master Shoto, Positive Port 1 to the battery disconnect / inverter; and Last Shoto in the group, Negative Port 2 to the battery disconnect / inverter. This will force the movement of energy to move between the entire group of connected batteries (as per last image)?

As good link I found was this for Shotos:  https://youtu.be/3gU6LR5F1TA

 

Any feedback would be greatly appreciated, as I have found that there seems to be a definite issue with this wiring and does NOT seem to be incorporating all the batteries in the group.

It's very possible they done this to spread the load in the cables. If the load is too much for the thin cables, it can lead to overheating and burning cables. As long as the length of the output cables are the same, it should in theory be fine, from what I remember reading up on

Hi There

Has anyone installed SDA and SDC Shoto modules together with Comms

Client has 4 SDA 48100 models and want to add but only SDC 48100 available

Thanks in advance