*The store has not been updated recently. You may want to contact the merchant to confirm the availability of the product.
Original sj4000 3.7V Li-on 900mAh Backup Rechargable Battery For SJ4000 SJ5000 SJ6000
2pcs x 3.7V Li-on 900mAh Backup Rechargable Battery(the size is 33*28*11mm)
Rechargeable Lithium-Ion Battery
Battery Capacity: 900 mAh
Compatible with SJ4000
Use As a Spare or Replacement Battery
the size is 33*28*11mm,if your sj4000 not the origianl one then you may need the thin size battery (33*28*10mm),because you use the copy one sj4000,