Perfect CompatibilitySpecifically designed for Zebra ring scanners, this battery is fully compatible with RS51/RS5100/RS51B0/RS51C0 models and replaces BT-000398/BT-000397/BTRY-RS51-7MA-01/BTRY-RS51-4MA-01 batteries. ^^ Extended RuntimeWith a 480mAh capacity ( 3.85V / 1.85W h), this high-performance battery delivers lasting power to keep your scanner operating continuously without interruption. ^^ Built-in SafetyFeatures advanced circuit protection that prevents overcharging, over-discharging, and overheating for completely safe operation. ^^ Easy InstallationSimply open your scanner's battery compartment and snap this replacement battery into place - you'll be scanning again in seconds. ^^ Reliable SupportBacked by our 12-month quality guarantee with responsive customer service ready to assist with any questions.