Power supply + smart LiPO backup

Archive
1

Anyone know of any gadgeteer (or otherwise) approach for a mains power supply with a (preferably LiPO) charger and smart switching between?

2

http://www.soldermonkey.net/shop/index.php?route=product/product&product_id=55

With a review here: https://www.ghielectronics.com/community/forum/topic?id=12126