Can I add a second battery to my single battery Dubbel?
While a second battery can be added to a single battery Dubbel, a kit which includes a converter will be necessary. We are currently waiting for price and availability confirmation, but we will eventually offer an additional battery upgrade kit. Typically, we recommend purchasing the dual battery Dubbel outright if a customer plans on using two batteries since it saves quite a bit in comparison to buying the single battery Dubbel and then a second battery at a later date.