🔋Why choose our lithium battery？ 🏅 【BtrPower Brand Support】Our factory has over 10 years experience in battery production, research and development. We are committed to providing customers with high performance and durable lithium battery. 🚛 【US Warehouse】We have US warehouse, the battery set usually reaches you in 2-7 business days after order. 👍 【After-sales Guarantee】 If you have any product question, please contact our support team via email. We will solve your problem within 24 hrs. 👉 【Warm reminder】Before purchase, please kindly check if battery specification( Voltage, Capacity, Power, Size) fit. 😊 【Many battery styles】BtrPower store has 36V battery, 48V battery, 52V battery, 60V battery, and 72V battery! ▶If you want the detailed parameters of the battery package, please contact us! ▶If you have any questions about the product, please contact us! ▶30 days free returns and 1 year warranty in our shop!