I am also looking for the accessary to charge the battery by DC 12V (Car Battery), because people will go to the field by car which might not have AC power but should have DC-car battery to charge the helicopter battery.
Do look up for 12V DC step down to 8 or slightly higher than the helicopter battery voltage and advise can it be charge the current, do send me the technical spec for review if any.
Another product I am looking for is the hand shake or press type (by dynamo) of flashlight. Do look for me if you have the source.
參考答案:因为人将会坐汽车去领域哪一个不可能让 AC 有力量但是应该有直流-汽车电池要价直升飞机电池，所以我也正在找寻附件要价直流 12V(汽车电池) 的电池。
确实看在因为上面 12V 直流步骤 ??落到 8 或者些微比直升飞机电池电压高而且劝告能它是费用涌流, 为检讨把技术上的投机确实送给我如果有的话。
我正在找寻的另外的一种产品是手摇动或手电筒的杂志报纸类型 (藉着发电机) 。
