Compatible adapter holder for BL1840, BL1860, and BL1815 Liion batteries. Designed for RC toys and robotics projects, providing a reliable power connection. materials. Made from durable plastic to ensure practicality and long service life with dependable performance across applications. Exquisite craftsmanship. Fine workmanship and an elegant appearance that are functional and enhance the look of your devices. Reliable replacement. A solid alternative for old or damaged connectors, helping your devices operate smoothly without interruptions. Applications Use with RC cars, planes, boats and other RC devices that use BL1840, BL1860, or BL1815 batteries for secure, stable power. Ideal for robotics kits and DIY projects requiring a compatible adapter to interface BLseries packs. Spare or replacement for aging equipment to restore reliable battery connections and minimize downtime.