openinverter forum

I offer two 9kWh Passat GTE 8x module blocks with cooling blocks and BCM with each.
For each block i made wiring to connect to SimpBMS Teensy 3.2.

I offer each battery block of 8 modules with functioning Simp BMS, wiring and LCD for 1100€ + shipping.
Location is Slovenia EU. If you have pickup option i can adapt...

Some photos and demonstration of application .
https://leafdriveblog.wordpress.com/202 ... o-simpbms/
https://leafdriveblog.wordpress.com/202 ... er-part-1/

Let me know in PM

Hi,
I've read the article. The Passat GTE 9kWh battery using SimpBMS looks quite good
I have a further question: What is the current remaining capacity of the battery in percentage?

versedpiano wrote: ↑Tue Jan 20, 2026 7:06 am ....
I have a further question: What is the current remaining capacity of the battery in percentage?

I am not sure. Never tested. I was using those cells as Ampera extender throughout the year and in winter i removed it in my workshop for use as a test pack. Pack never went below 3.3V per cell because Ampera stops discharge at 30% SOC.
I will try to find a way to discharge the pack to 3V per cell and charge it back to 4.1V per cell and probably record energy transfered.
I could wire them in paralell for 8P12S using solar inverter and get 2kw water heater and spend kW to heat up 300L of water What could possibly go wrong.

arber333 wrote: ↑Tue Jan 20, 2026 9:50 am I am not sure. Never tested. I was using those cells as Ampera extender throughout the year and in winter i removed it in my workshop for use as a test pack. Pack never went below 3.3V per cell because Ampera stops discharge at 30% SOC.
I will try to find a way to discharge the pack to 3V per cell and charge it back to 4.1V per cell and probably record energy transfered.
I could wire them in paralell for 8P12S using solar inverter and get 2kw water heater and spend kW to heat up 300L of water What could possibly go wrong.

I had a lot on my hands lately... i will test capacity soon and it is not expected to be less than 8kWh.

If anyone is interested to buy as is i can tweak the price for EU at 900€ + shipping for 8 modules with functioning Simp BMS, wiring and LCD

I have two of the packs available here.

Still for sale...