Overview
The HRB 4000mAh 7S 25.9V LiPo battery is a high-discharge power pack designed for RC helicopter, airplane, and boat setups where voltage, plug type, and physical size are matched.
Key Features
- High continuous discharge rate: 100C
- EC5 discharge connector
- 7-pin balance port
- 12AWG silicone wire
Specifications
| Brand | HRB |
| Battery type | Li-Poly (LiPo) |
| Capacity | 4000mAh |
| Cells | 7S |
| Voltage | 25.9V |
| Continuous discharge rate | 100C |
| Energy | 103.6Wh |
| Size (L x W x H) | 135 x 42 x 57mm (Âą3mm) |
| Size (inch reference) | 5.31 x 1.65 x 2.24in |
| Weight (approx.) | 689g |
| Discharge plug | EC5 female plug |
| Balance port | 7 pins |
| Wire | 12AWG silicone wire |
| Recommended charging rate | 2A-4A (0.5-1C) |
| Markings | CE, RoHS |
What's Included
- 1 x HRB LiPo battery
- 1 x User manual
- 1 x Carton box
Applications
- RC helicopter power systems (when voltage/connector/size are matched)
- RC airplane power systems (when voltage/connector/size are matched)
- RC boat power systems (when voltage/connector/size are matched)
- RC car/truck platforms using a 7S LiPo and EC5 connector (when matched)
Notes
Pay close attention to the battery size (135 x 42 x 57mm) to ensure it fits the battery compartment before purchase. For pre-sales compatibility questions (EC5, 7S, dimensions, or charging setup), contact [email protected] or visit https://rcdrone.top/.
Details

Built for high-discharge RC setups, this 7S 25.9V pack combines 4000mAh capacity with a 100C continuous rating in a compact 135Ã42Ã57mm case.

Match the voltage, connector, and dimensions to power compatible RC helicopters, airplanes, boats, and 7S EC5-equipped car or truck platforms.

An EC5 female discharge plug, 7-pin balance port, and 12AWG silicone wire simplify pairing with the right charger and ESC.

