Gens ace is one of the top rank battery corporations with deep research and manufacturing on NIMH, LI-PO, LI-FE by the effort of 200 professional engineers and technicians with 20 years exquisite battery technology. The Gens ace brand holds the traditional concept of "excellent quality", "Optimization"& "Priority" on Sales & Services. All batteries are tailored for various scales of the RC Models such as electronic cars, airplanes, vessels and also other models, toys, electric tools, electric bikes, electric autos, digital products etc. This Gens ace 3800mAh 2s 7.4V TX Lipo Battery Pack with JST-SYP plug is specially designed for the QX7 transmitter. Features - Remarkable stacking technology enables single-cell capacities of 3800mAh. - High discharge performance and high energy density. - Superior Japan and Korea Lithium Polymer raw materials. Specifications - Balancer Connector Type: JST-XHR-3P - Brand: Gens ace - Capacity(mAh): 3800 - Balancer Wire Length(mm): 45 - Configuration: 2S1P - Connector Type: JST-SYP - Discharge Rate (C): TX - Height(±2mm): 18.5 - Length(±5mm): 70 - Net Weight(±20g): 140 - Voltage(V): 7.4 - Width(±2mm): 52