http://2learnhow.com/story.php?title=topmate-electric-bike-with-ipx4-level-waterproof Topmate electric bike is equipped with a 48V12.5Ah removable lithium-ion battery and supports fast charging. The whole bike with IPX4 level waterproof, subject to any direction of the water splash without harmful effects Mon, 06 Mar 2023 02:20:48 UTC en