How to Increase and Decrease the number of accounts per batch.

To increase or decrease batch size

Tools - System Settings - EFT Settings

1. In the EFT Settings Field click on (click to edit)
2. In the Field named, EFT Batch Size:  set the Batch Size, this is set to default at 300
3. Click on, Save

If increasing the batch size causes batch failures (due to the upload time), decrease the batch size. This may be the reason for the failures.