The link above offers good information on how to maximize battery health. It also explains why batteries lose the ability to reach 100% as they get older. The link below offers a link where you can chat with an Apple Expert for for help. iPhone Battery Repair & Replacement - Apple Support. ( 1)
1)Find a buyer and sell it . 2)Buy a third party battery if available at low price. 3)Buy a power bank for the time being till you have enough money to buy a new battery. 4)Just keep the phone and wait to upgrade to a new iPhone till you have sufficient money.Penyebab Battery Health iPhone cepat turun adalah ponsel terkena atau terpapar suhu yang ekstrem. iPhone dirancang untuk beroperasi dengan baik dalam kisaran suhu dari 16 derajat hingga 22 derajat celcius. Bila kurang atau melebihi rentang ideal suhu iPhone tersebut, bakal mempengaruhi kondisi kesehatan baterainya. . 899 980 702 110 711 3 796 862