Hi everyone,

I have asked for help twice before, unfortunately without receiving any response or assistance from the group. My first post was on 29 July, and I posted again on 5 August.

I now have a more serious problem. One of my five Shoto 4.8 kWh 100 Ah batteries has stopped working because of a severe cell imbalance. The BMS has gone into protection and the battery will neither charge nor discharge.

I am asking once again, please, if there is anyone in this group who has experience with these Shoto batteries and knows how to reset, recover, balance, or repair this battery, I would really appreciate your help.

At the moment I simply cannot afford to replace the battery, so I am hoping that someone with the necessary knowledge and experience can guide me or help me get it working again.

If anyone knows a technician who repairs Shoto lithium batteries, I would also greatly appreciate their contact details.

Please help me if you can.

Thank you very much.

2 hours ago, Swannie said:

Hi everyone,

I have asked for help twice before, unfortunately without receiving any response or assistance from the group. My first post was on 29 July, and I posted again on 5 August.

I now have a more serious problem. One of my five Shoto 4.8 kWh 100 Ah batteries has stopped working because of a severe cell imbalance. The BMS has gone into protection and the battery will neither charge nor discharge.

I am asking once again, please, if there is anyone in this group who has experience with these Shoto batteries and knows how to reset, recover, balance, or repair this battery, I would really appreciate your help.

At the moment I simply cannot afford to replace the battery, so I am hoping that someone with the necessary knowledge and experience can guide me or help me get it working again.

If anyone knows a technician who repairs Shoto lithium batteries, I would also greatly appreciate their contact details.

Please help me if you can.

Thank you very much.

Hi Swannie

I found this post with some good info pieces on:

https://powerforum.co.za/topic/6702-shoto-48v-100ah-48kw-batteries/


As per this post:
To recover a locked Shoto 4.8 kWh battery, disconnect it from the bank, isolate it, and apply a gentle, low-current charge (such as via a dedicated adjustable DC power supply or single-module setting) to wake the BMS. If the imbalance is severe, the internal passive balancer needs extended absorption time at a lower bulk voltage (52.5V–55.2V) to safely equalize the cells.

How old are the batteries that you have and what inverter are you using with them? Perhaps someone with more details experience can reply further then.

Hi KevinH Thank you very much for your quick response. The batteries are 2021 models, and the cycles are still very low.