For 2021 their are two versions of the award winning Cube Reaction HPA Pro the 500 & the 625. This means you will never have to worry about staying out all day riding and the battery running low. What more could you want? The new PowerTube 625 lets you enjoy long and mountainous rides, while still reserving plenty of energy for every adventure. Thanks to a rated capacity of 16.7 Ah and approx. 625 Wh energy content, the lithium-ion battery brings maximum ranges and altitudes within your grasp. The well-secured PowerTube 625 will not fall out of its housing, even on demanding terrain. But is still easily removed. After approx. 3.7 hours, the battery is fully charged with the 6 A Fast Charger, while half the charge is already attained after approx. 1.4 hours.