... treatment,designed with an attacking head.5. Using 4pcs 18650 2200mah to make a battery pack in silicone(2pcs in parallel,2pcs in series),capacity ... : 4400 mAh,voltage:8.4 V,with two bicycle fixed ... and change. 7. Note:a. Charging in safe place;b. Do not remove the battery,in case it will affect properties of products ...