Quite a few smartwatches are round, so why are they still using rectangular batteries? LG Chem certainly doesn't think that makes sense. It just started shipping a hexagonal battery that should deliver 25 percent more capacity in circular watches, where a lot of space normally goes to waste. You're theoretically getting another four hours of juice, or enough to make it through a long night without resorting to a low-power mode. The company isn't naming customers, but it's safe to say that LG's next wave of rounded wristwear will last that much longer. And that's just the start -- LG is planning more unusually-shaped batteries that will extend the running time of gadgets without dictating their look and feel.
All products recommended by Engadget are selected by our editorial team, independent of our parent company. Some of our stories include affiliate links. If you buy something through one of these links, we may earn an affiliate commission.