we are very sorry to hear the product was not satisfactory for you. we do pride ourselves on ensure all customers of ours and customers of our customers are looked after.
in regards to your problem please see the link attached to this comment may help with he issues you are having. www.thexboxhub.com/venom-twin-docking-sta
the reason for the batteries having to be placed in the controller to charge is so that there is adequate pressure on the connectors to ensure a full charge is made.
we had found with many samples before production a lot of products out there only just sit on the connectors thus not giving enough charge for the batteries to full charge.
should you still have issues with our product we would be more than happy to replace this item for you. if you could return the item back to amazon and request a replacement we will ensure one is sent out for you.