COMPATIBLE PART NUMBERS: SB10K97580 SB10K97579 SB10K97581 SB10K97597 4X50M08810 01AV422 01AV423 01AV424 01AV452 01AV490 61; ( compatible with 48Wh 4400mAh 01AV425 61+ battery and 72Wh 6272mAh 4X50M08812 61++ battery )
SECURITY: Our batteries have passed strict intelligent detection, such as short circuit protection, over voltage protection, discharge protection, over current protection, which is very important for batteries use cycle and safety. All batteries are equipped with high quality material to ensure good performance. CE, FCC, RoHS certificated.
SUPPORT: Rest assured with 60 days Refund and 12 months Aftersales; 24 x 7 email support. Note: Amazon return windows will close after one month, don't worry about it, you can click on seller store on right corner “ask a question” and contact seller directly for 12 month warranty