This is a high-capacity 48V 40Ah / 60Ah Lithium-ion Battery, designed to deliver long-lasting power for extended rides. Its removable design makes it easy to transport, whether to your home, office, or charging station. This battery is compatible only with Wallke H9/H7 electric bikes. Each battery comes with two unique keys to lock and unlock it. Please keep both the original key and spare in a safe place, as duplicate keys are not available once the battery is sold. All Wallke eBikes come with a battery pre-installed. Please purchase this battery only if you need a replacement or want a spare for convenience at home or the office. What's in the Box? 1 × 48V 40Ah or 60Ah Battery 2 × Keys Battery Charger Not Included! If you need a charger, please click here to purchase separately. Usage & Safety Tips: Charge the battery in a cool, dry environment. Do not expose the battery to extreme heat or moisture. Inspect keys and battery casing regularly for damage. Do not attempt to disassemble the battery yourself; refer to authorized technicians for service. Ordering Notes: Confirm your eBike model (H9 or H7) before purchasing to ensure compatibility. This battery is shipped separately from your eBike if purchased as a spare. With this Wallke high-capacity battery, enjoy longer rides, reliable power, and peace of mind knowing you have a fully compatible spare or replacement for your eBike.