Hello everyone. I own a Dost drop Chain E bike that I purchased Last August. I really enjoy the Bike. As you are probably aware Dost is now in Receivership and have left owners out in the cold when trying to order parts. I spent two weeks researching where to get the primary in tube battery and the secondary battery which extends its range. I just wanted to let you know there is a company In the US called American Electrics. I ordered both batteries from this Company. They make batteries for most E bikes and they use Panasonic batteries internally. They are cheaper than Dost. Dost sourced their batteries from China. The owner said the china batteries have a useable life of three years. His batteries last 5-6 years. My Bike was shipped from Dost with a 2.5 year old battery. American Electrics makes each order on the day you order. I hope this helps Dost owners with dead batteries and don’t know where to get them