Converted to lithium batteries can have such a long range, but the capacity must be larger than the original. It is best to use a high-power point protection board, so that you are not afraid to go outside fast charge, not afraid of the charger is not easy to charge, and not afraid of over discharge damage to the lithium battery.
It is best to replace the charger with a high-current charger for lithium batteries, so that it can charge quickly.
Converted to lithium batteries can have that far mileage, but the capacity must be larger than the original.