充电器charger，battery charger，recharger，electricity charger都可以
电池是battery，cell,batteries, electric element, electric battery, power cell ,pile ,element ,storage battery,accumulator (register),volta cell, galvanic element cell,mesh, cuvette, galvanic element,呵呵，够多了吧
还有呢
charge and discharge board 充放电板
charge and discharge key 充放电开关
charge calculation 配料计算
charge capacity 装载容量
charge characteristic curve 充电特性曲线
charge condition 充电状况
charge coupled device 电荷耦合器件
charge coupled imaging device 电荷耦合成像器件
charge d'affaires ad interim 临时代办
charge d'affaires 代办
charge discharge efficiency 充放电效率
charge discharge in factory 训练充放电
charge equalizing AD converter 电荷均衡模数转换器
charge for ballast 压舱费
Charge for Endorsement 海事签证费
Charge for Fumigation of Cargo 货物熏蒸费
Charge for Hard Work Handling 困难作业费
charge for inspection of cargo 货物检验费
Charge for Supervision of Loading 货物监装费
charge holding 保持充电
charge life 燃料使用期限
charge motor 充电马达
charge pump 供给泵
charge pump 供给泵充液泵
charge rate 充电率
charge ratio 满载系数
charge switch 充电开关
charge system 充电系统
charge system 充电系统充电系统
charge temperature 首火温度
charge temperature 着火温度
charge unit 计价单位
charge up 充气充电充液
charge upon 作抵押
charge valve 充气阀充液阀
charge voltage 电荷电势
charge 充液
charge 电荷
charge 电荷负荷充填充气充电充液费用充填充气充电充液
chargeable battery 可充电电池
参考资料：http://www.geocities.jp/ps_dictionary/eeec_b.htm