Kekere foliteji DC orisun fifa ni a ailewu submersible fifa agbara nipasẹ DC21V-60V.Nigbagbogbo kekere ni iwọn, o ni awọn anfani ti ailewu giga, ariwo kekere, agbara agbara kekere ati igbesi aye iṣẹ pipẹ, ti o jẹ ki o jẹ apẹrẹ fun awọn orisun orin ijó ti o gbẹ ati awọn orisun orin ibaraenisepo.