Connecting one or two Weco 5.3 kwh batteries to an existing system

k123456

I have one Solis inverter

14 panels

1 Weco 5.3 kwh battery

I am considering getting one or two Weco 5.3 kwh batteries

or one 10kwh , but probably ;

two Weco 5.3 kwh batteries

Apparently to daisy chain the new batteries

you connect in this way

Is there anything else I need to consider apart from the weight 2 x 60kg

weco wifi to update using bluetooth, so that the new batteries have the same firmware as old (this is optional I guess)

cable from old battery plus to plus and neg to neg

old can b to  new can a

ratracer

I had a second Weko 5.3kW battery added to my system last year, after a year of operation, and have had no issues with either battery.

k123456

Thanks and did you self install it, and is the process above correct

ratracer

No, I left it to the original installer to install it. It sounds about right though.

Ha Long Bay

https://www.boards.ie/discussion/2058422017/connecting-one-or-two-weco-5-3-kwh-batteries-to-an-existing-system

Not familiar with Weco batteries but I imagine the can bus needs to also be linked between them using a cat5 cable.

mjatkey

https://www.boards.ie/discussion/2058422017/connecting-one-or-two-weco-5-3-kwh-batteries-to-an-existing-system

Hi, yeah I had two WECO's installed originally, was going to add a third but went DIY Seplos instead, you get 3x capacity of one 5K Weco for similar price (I was quoted €2200 to install third Weco) paid £1500 for the Seplos.

If you do add the Weco yourself I'd say its handy enough just need to reconfigure the dip switches on the batteries so they all act as one.

The App lets you add the Weco's to your LAN updating firmware is fine.