Take control of your day with the versatility and performance of Replacement Shark Down Tube 36V 10.4Ah 13Ah 36V 15Ah 17.5Ah Lithium-ion Battery Pack for 250W 350W HITWAY BK27 Electric Bike. Smart, efficient, and built to last — an essential in any collection. Browse and buy online at Keser.pl — trusted products at great prices.