【Battery Details】:21.6V lithium-ion battery,same as 21.9V,Comply withCE,FCC,ROHS certified and standards.
【Safe and reliable】:built-in over charge, over discharge, over voltage, over current and overheating protection, to ensure that your products are safer to use.
【Install-Replacement battery is easy to install and fits perfectly】 Li-Ion battery technology offers extended run time with no memory effect. It can be used to replace the factory battery, and it also supports a variety of models.
Product Guarantee-We provide 12 months warranty,30 days Refund and 24 hours response service.Please feel free to contact us if you have any questions before or after purchase.