The Awake Flex Battery XR powers up your adventures by offering extended range for your electric surfboard. The XR option provides 2.8 kWh - the highest kWh rating on the market. This enables superior time on the water, and is for the E-surfer who is looking for a day without stopping. The XR [Extended Range] lithium-ion battery for Awake's electric surfboard range RÄVIK and eFoil VINGA. This battery runs for up to 2 hours with Awake VINGA, and for up to 60 minutes with Awake RÄVIK depending on the board model, rider weight, and riding conditions. Order now to increase your ride time!