replacement battery for rc helicopter

{"title":"18.87Wh Li Ion Polymer Battery 3.7V 5100mAh Lithium Polymer Battery For RC Helicopter","imgUrl":"https:\/\/img.chinax.com\/nimg\/e9\/9e\/dff6504c162078a2fbd28de27550-200x200-1.jpg","attrs":{"Price":"Negotiable","Brand Name":"GUANYU","Model Number":"GUANYU-FF-118","Minimum Order Quantity":"50","Delivery Time":"2~4weeks for samples; 4~6weeks for mass production","Certification":"CE\uff0cUN38.3\uff0cMSDS","Place of Origin":"China","Payment Terms":"T\/T, L\/C","Supply Ability":"450Mwh\/year","Packaging Details":"standard export carton, pallet","Nominal Voltage:":"3.7V","Max Charge Current::":"2500mAh","Working Temperature::":"-20- 50\u2103","Weight::":"120g","Certification:":"CE\/UN38.3\/MSDS","High Light:":"Polymer lithium battery 6667108 3.7V 5100mAh Smart fan lithium battery polymer custom wholesale","Typical Capacity:":"5100mAh","Max Discharge Current:":"5100mAh","Cycles Life@ 100% DOD::":"\u2265800","Dimension::":"Customizable","Warranty:":"1Years"}}

{"title":"1s1P 3.7V 300mAh LiPo Battery Firefox C129 4ch Flybarless Micro Helicopter Replacement","imgUrl":"https:\/\/img.chinax.com\/nimg\/5e\/22\/65d03499dc5f10a3512cc65bb617-200x200-1.jpg","attrs":{"Price":"$8.99\/packs 2-499 packs","Brand Name":"lohuite","Model Number":"1S LIPO BATTERY","Minimum Order Quantity":"2 packs","Packaging Details":"as export package","Supply Ability":"100000 Pack\/Packs per Week","Weight":"80g","The charging ratio":"1-5C","The discharge rate":"40C-80C","Storage Type":"0-45\u2103","Capacity":"300mah","Cells":"1s1P","Voltage per pack":"3.7V","Discharge rate":"40C"}}

{"title":"CFLYAI Rc 5G 4k Ultra HD Drone Wifi Helicopter Auto Return","imgUrl":"https:\/\/img.chinax.com\/nimg\/e5\/cf\/d04f944dc5aeaff02eb184657242-200x200-1.jpg","attrs":{"Price":"Negotiable","Brand Name":"CFLYAI","Model Number":"DF808","Minimum Order Quantity":"Negotiable","Delivery Time":"5~10days","Certification":"CE,FCC","Place of Origin":"CHINA","Payment Terms":"L\/C, T\/T","Supply Ability":"20,000pcs\/month","Packaging Details":"color box with bags","Size":"Unfold\uff1a182 X 255 X 74 mm \uff08L*W*H\uff09","Weight (Battery & Propellers":"515g","Wheelbase":"280 mm","Max Speed":"19m\/s(sport mode)","Max Flight Time":"35 mins","Sensor":"Ambarella A12,SONY CMOS;","Maximum flight height":"120m\uff0cmaximum 500m (need to change setting on app)"}}