Reliable protection for cordless vacuum cleaner batteries with built in protection against short circuit, output overvoltage, overtemperature and output overcurrent. Replacement procedure for portable batteries: remove the screws on the bottom, disconnect the battery connector, and insert a battery to restore operation of your robot. The rechargeable battery includes a built in intelligent CC CV charging circuit that provides comprehensive protection: overcharge, overdischarge, overcurrent and overvoltage protection. Lithium ion vacuum cleaner batteries typically have higher energy density and can store more power in a limited space, delivering longer run time. Key attributes Function: rechargeable battery with integrated protection circuit to guard against common failure modes during charging and use. Compatibility: designed for cordless vacuum cleaners and robot vacuums that use portable battery modules with compatible connectors. Size and form factor: compact design suitable for tight or slim battery compartments in handheld or robotic cleaning devices. Material and chemistry: lithium ion cells chosen for energy density and reliable performance. Performance: enhanced runtime and safety through intelligent charging and multi level protection. Use scenarios Scenario 1: Replacing a worn or failing battery in a robot vacuum to restore cleaning time and overall performance. Scenario 2: Upgrading to a higher energy density battery in a compact vacuum or robot to achieve longer operation between charges without enlarging the battery footprint. Scenario 3: Servicing or routine maintenance of cordless cleaning devices where built in protections reduce risks during charging, discharging and hot conditions.