[Qwenoer Li-ion Battery: The 25.2V Dyson v12 battery replacement has a capacity of 3500mAh meets CE FCC ROHS certifications and standards tested by manufacturer to match OEM products. Upgrade Battery : Replacement battery for dyson v12 detect slim cell upgrade adopts top A lithium-ion battery which can cycle 1000+ ensuring stable charging and long-lasting performance which can extend the running time of the power tools by 2x and increase the power by more than 75%. Compatible with all V12 models : Fully compatible with Dyson V12 series models V12 Detect V12 Detect Slim V12 Detect Absolute V12 Detect Slim Absolute V12 Detect Fluffy SV20 SV26 SV30 SV34 SV35 SV46 Vacuum Cleaner，Battery Part No. 965470-01 Safe & Reliable: The dyson v12 detect slim battery replacement have Built-in over-charge over-discharge over-current short-circuit protection and voltage regulator circuit protection ensures stable voltage and can be charged and discharged as needed without loss of capacity. Installation Note: Installation requires that the product button be held down and inserted into the unit. Qwenoer Service: 30 days money back 180 days replacement if there is any problem during the use please contact us!]