Not a scientific test...
I got the v18s yesterday. To make them work with the v28 battery connectors you have to grind down the plastic notch on the connector (not the battery).
They don't seem to mind the 20a draw of my 48v20a controller.
I have 4 of them 2s2p for 36v6ah. I got 10 miles range on my KMX averaging around 20mph with little stops.
For reference the V28s in the same configuration gets me 14 miles averaging 25mph on the same trail.
I got the v18s yesterday. To make them work with the v28 battery connectors you have to grind down the plastic notch on the connector (not the battery).
They don't seem to mind the 20a draw of my 48v20a controller.
I have 4 of them 2s2p for 36v6ah. I got 10 miles range on my KMX averaging around 20mph with little stops.
For reference the V28s in the same configuration gets me 14 miles averaging 25mph on the same trail.