Are Ikea's $7 Rechargeable Batteries Actually Pricey Eneloop Pro AAs in Disguise?

If you cheap out on alkaline batteries, there's a noticeable difference in performance. But that might not be the case with rechargeable nickel-metal hydride batteries made in Japan. As Matthew Eargle discovered, the cheap LADDA rechargeables that Ikea sells might actually be rolling off the same production line as...