Hi Everyone. So I've had a perfectly working system for a while with this inverter with 2x Shoto batteries. Yesterday we added another battery. The dip switches were changed as per the attached image, batteries reset and the new RS485 cable attached. The inverter is however still reading 200ah capacity, not 300. What else could be the issue here? We tried other network patch cables and swapped them around, nothing seems to update the reading. With the two batts, on the first bat (master) the RS485B was linked to the A port of the 2nd bat, So we repeated this pattern, but also swapped it around to see if it makes a difference. Anything we might be doing wrong? Any help would be appreciated.

On 2026/07/10 at 10:08 AM, Meneer said:

Hi Everyone. So I've had a perfectly working system for a while with this inverter with 2x Shoto batteries. Yesterday we added another battery. The dip switches were changed as per the attached image, batteries reset and the new RS485 cable attached. The inverter is however still reading 200ah capacity, not 300. What else could be the issue here? We tried other network patch cables and swapped them around, nothing seems to update the reading. With the two batts, on the first bat (master) the RS485B was linked to the A port of the 2nd bat, So we repeated this pattern, but also swapped it around to see if it makes a difference. Anything we might be doing wrong? Any help would be appreciated.

On Deye/Sunsynk you program the battery size and maximum charge limits on the inverter. The communication with the batteries can reduce charging further but it doesn't override the inverter settings.