best iphone 4 extended battery case

{"cid":"91219105","title":"Deep Cycle Water Bottle Series Redar 36V 10AH 18650 Lithium Electric Bike Battery With PC+ABS Case For Electric Scooter","imgUrl":"https:\/\/img.chinax.com\/nimg\/a7\/ce\/a3a2d6b232d6684604e1402eb646-200x200-1.jpg","attrs":{"Price":"Negotiable","Minimum Order Quantity":"100PCS","Delivery Time":"7~30 days","Certification":"MSDS, UL, CE, ROHS, etc","Place of Origin":"China","Payment Terms":"T\/T","Supply Ability":"3500 Per Months","Packaging Details":"Standard Export Carton,Wooden Case ,Pallet etc.","Cell Brand":"CATL\/BYD\/Domestic\/EVE\/SANYO\/Sumsung\/Panasonic,etc.","Cell Material":"Lithium Iron Phosphate Battery\/Ternary\/NIMH\/NCM,etc","Capacity":"10AH\/Customized(7AH,20AH,30AH,50AH)","Voltage":"36V\/Customized(24V\/36V\/52V)","Discharge cut-off voltage":"30V","Continuous Discharge Current":"7A","Connection Method":"10S4P","Weight":"About 4kg"}}

{"cid":"91226238","title":"Best Selling Smart GPS Positioning 4g Watch Heart Rate Blood Oxygen Body Temperature Monitoring Docking OEMcommunicationprotocol","imgUrl":"https:\/\/img.chinax.com\/nimg\/db\/7e\/a08c918562c22decfe5cd894baed-200x200-1.jpg","attrs":{"Price":"American version USD34 Eurasian version USD33","Brand Name":"White label","Model Number":"S10","Minimum Order Quantity":"2","Delivery Time":"4 to 5 days","Brand":"Shadow Way","Charging Method":"Magnetic","private mold":"Yes","battery life":"5to 7 days","waterproof standard":"Ip67","Payment Terms":"T\/T","function":"1. Real-time tracking 2. Historical route 3. Electronic fence 4. SOS emergency call 5. Two-way call 6. Remote monitoring 7. Voice intercom 8. Do-not-disturb mode 9. Whitelist 10. Remote power-off 11. Electronic fence 12. Out-of-range alert 13. Heart ra","Buckle styles":"Folding buckle","screen size":"1.6","Operating System":"Provide communication protocol","camera":"3 megapixels","Supply Ability":"cash commodity","screen resolution":"200*320","item shape":"Rectangular","Place of Origin":"Guangdong, China","Packaging Details":"23*13*16","band material":"Silicone","case material":"ABS+PC","\"WIFI+GPS+LBS range\"":"Wifi 3-50m, GPS 3~10m, LBS100~500m","Certification":"CE ROHS","display type":"IPS","Wifi\tSupport":"Speaker\tHigh-quality Speaker","applicable people":"Elderly","Battery capacity 600mAH":"Voltage&Current\t3.85V","feature":"4 G, SIM Card, Gps","Intelligent AI":"Support","FCC CE ROHS complete":"Battery capacity 600mah","Model classification":"Rose gold, black (American version)"}}