Unlike other brands, we make and design each product we sell including our one and only 2.4Ah rechargeable battery pack, that can last up to more than 3-5 hours on a full run. No need to replace 8 AA batteries each time your light goes out, just simply charge with the corresponding charger included in every order. By buying a TKBaja, your not just getting a powerful and long lasting Baja, you get quality and performance you can count on with every ride.