2S3000FJ : 7.4 volt 3000mAh rechargeable long-life Li-PO battery for Futaba Transmitters. Replaces original battery #s HT5F1700B , HT5F1800B, FUTM1484, 5HRAULAF, etc. Provides more operating time than original battery. Fits Futaba transmitters such as T10J, T4PK, T8J, T10JA, T6J, 4PX, 4PL, 4PLS, 4PKS, T14, T14SG, 14SG, 4PK FASST, T12K, T12, 12K T-FHSS, 16SZ, 18SZ, etc.
Battery dimensions: 71mm x 47mm x 15mm Appr. (L x W x H); 2.8 x 1.85 x 0.59 inches. Weight approx 100 grams (4 ounces).
Includes the Futaba J connector, which plugs right into your transmitter. Also has the white Balance connector, and an additional power/charge connector. This will enable you to access and charge the battery with having to unplug it from the transmitter. This Lithium Polymer battery requires a smart Li-PO charger to recharge it; it cannot be charged thru the radio with the original stock OEM wall cube charger.