Got another saddle bag to try.
https://www.ebay.co.uk/itm/Roswheel-111363-Waterproof-Bicycle-PVC-Saddle-Bag-Cycling-Accessory-Black/202092167393?hash=item2f0da1c0e1:g:-KsAAOSwke9Z8EOe
This one only just holds 10s 8aH or 12s 6.6aH multistars. Looks a bit neater than than the larger bag if 8aH will be enough for my commute. Looks a good size saddle bag for general use (or a larger controller) too.
A sneek peek at the other side with the controller wires visible.
https://www.ebay.co.uk/itm/Roswheel-111363-Waterproof-Bicycle-PVC-Saddle-Bag-Cycling-Accessory-Black/202092167393?hash=item2f0da1c0e1:g:-KsAAOSwke9Z8EOe
This one only just holds 10s 8aH or 12s 6.6aH multistars. Looks a bit neater than than the larger bag if 8aH will be enough for my commute. Looks a good size saddle bag for general use (or a larger controller) too.
A sneek peek at the other side with the controller wires visible.