On Monday, June 18, 2018 at 5:50:08 PM UTC-7, wrote:
Where can I get a battery for an Oudie?
Thanks, 5U

Call Paul at http://www.cumulus-soaring.com/. I looked all over for a battery. He offered to send me one or do the replacement. I opted to get the battery, and he stepped me thru the installation. And the price was reasonable.