Sigma IION XL

The double IION

The latest development in SIGMA rechargeable batteries is called the IION XL. It is, as its name suggests, the larger version of IION. Its 4 Li-Ion cells provide optimum energy for the POWERLED EVO and almost double the burn time of the KARMA EVO. Lithium-ion technology yields a high energy ratio, has a low self-discharge rate, and is temperature resistant. At only 210 g, the IION XL is compact and universally mountable on a bike, or simply toss it in a hydration pack or jersey pocket.