The CNHL Long Range Series 12700mAh 21.6V 6S2P 21700 Li-ion battery combines twelve BAK 65E high-energy cells into a 274.32Wh battery pack for large long-range FPV, cinematic UAVs, fixed-wing UAVs and endurance-oriented aircraft using XT60. The BAK 65E platform is designed around maximum stored energy and exceptional gravimetric energy density, while the 2P architecture allows electrical load to be shared across two cells in each parallel group.
At approximately 941.5g for the pictured production sample, the finished battery achieves approximately 291Wh/kg of pack-level energy density. This figure includes all twelve 21700 cells, pack construction, XT60 connector, 12AWG power leads and balance wiring rather than describing the bare cells alone.
This battery is positioned around Energy First / Maximum Endurance. It is intended for larger aircraft capable of making effective use of a 274Wh-class energy reserve without requiring the repeated extreme burst output associated with racing, aggressive freestyle or other high-C LiPo applications.
Quick Battery Fit & Performance Check
| Battery Type |
21700 Li-ion battery pack |
| Cell Platform |
BAK 65E |
| Configuration |
6S2P / 12 cells |
| Capacity |
12700mAh |
| Nominal Voltage |
21.6V |
| Nominal Pack Energy |
274.32Wh |
| Approx. Weight |
Approx. 941.5g |
| Approx. Pack Energy Density |
Approx. 291Wh/kg |
| Main Connector |
XT60 |
| Power Wire |
12AWG |
| Performance Direction |
Energy First / Maximum Endurance |
| Primary Applications |
Large long-range FPV, cinematic UAVs, fixed-wing UAVs, mapping and survey platforms |
Product Specifications
| SKU |
LI1270106S70XT60 |
| Series |
CNHL Long Range Series |
| Chemistry |
Rechargeable Li-ion |
| Cell Format |
21700 |
| Cell Model |
BAK 65E |
| Configuration |
6S2P / 12 cells |
| Capacity |
12700mAh |
| Nominal Voltage |
21.6V |
| Nominal Pack Energy |
274.32Wh |
| Main Connector |
XT60 |
| Main Power Wire |
12AWG |
| Approx. Dimensions |
150.5 × 44 × 67mm (5.93 × 1.73 × 2.64in) |
| Approx. Weight |
941.5g / 2.08lb |
| Approx. Pack Energy Density |
Approx. 291Wh/kg |
274.32Wh at Only About 941.5g
The standout characteristic of LI1270106S70XT60 is the amount of stored energy available relative to complete battery mass. With 274.32Wh at approximately 941.5g, the battery reaches approximately 291Wh/kg.
This is a finished-pack figure rather than a bare-cell calculation. It includes all twelve BAK 65E cells, the XT60 connector, 12AWG power leads, balance wiring and physical pack structure that the aircraft actually carries.
For large endurance aircraft, this relationship can be more meaningful than mAh alone because battery weight directly influences hover efficiency, cruise efficiency, payload margin and total usable mission time.
Approx. 291Wh/kg Finished-Pack Energy Density
High gravimetric energy density is the defining characteristic of the BAK 65E platform. Even after twelve cells are assembled into a complete 6S2P battery with XT60, 12AWG wiring and pack structure, LI1270106S70XT60 retains approximately 291Wh/kg at the finished-pack level.
That makes energy density a primary performance feature rather than simply another specification. Efficient aircraft can carry significantly more watt-hours without battery mass increasing at the same rate.
Actual flight or mission endurance still depends on aircraft efficiency, propulsion load, payload, wind, operating profile and usable depth of discharge.
27% More Energy with Only About 11% More Weight
The advantage of the BAK 65E platform becomes especially clear when this battery is compared with the corresponding CNHL 10000mAh BAK 50D 6S2P XT60 battery.
| Specification |
10000mAh 50D 6S2P |
12700mAh 65E 6S2P |
| Pack Energy |
216Wh |
274.32Wh |
| Approx. Weight |
852g |
941.5g |
| Pack Wh/kg |
Approx. 254Wh/kg |
Approx. 291Wh/kg |
| Cell Direction |
Power + Energy Balance |
Energy First / Maximum Endurance |
The BAK 65E version stores 27% more nominal energy, while the pictured finished-pack weight increases by only approximately 10.5%. This produces approximately 14.9% higher finished-pack gravimetric energy density.
This is why the 12700mAh 65E pack represents a different optimization target rather than simply a higher-capacity version: substantially more mission energy for every kilogram of battery carried.
Powered by BAK 65E – Energy First / Maximum Endurance
The BAK 65E is the high-energy platform within the CNHL 21700 Long Range Series. Its defining advantage is high stored energy relative to cell mass rather than maximizing extreme burst-current capability.
This design direction is especially relevant to larger long-range FPV aircraft and fixed-wing UAVs. When the aircraft operates efficiently at moderate electrical loads, the additional watt-hours can translate directly into more useful distance and mission time.
For systems with greater sustained or repeated high-current demand, the BAK 50D Power + Energy Balance platform may remain the stronger direction.
12700mAh 6S2P High-Energy Architecture
Twelve BAK 65E cells are arranged as 6S2P. Six series groups establish the 21.6V nominal battery platform, while two 6350mAh cells operate in parallel within each group to create a total capacity of 12700mAh.
The 2P architecture also allows electrical load to be shared between two cells in every parallel group. This provides greater current-sharing capability than a corresponding 6S1P 65E battery while preserving the high-energy character of the cell platform.
The trade-off is additional size and mass, so the battery is best suited to larger platforms capable of converting its 274.32Wh energy reserve into useful flight or mission time.
Maximum-Endurance 6S Battery for Large Long-Range FPV
This battery is positioned for large endurance-focused 6S FPV platforms capable of carrying an approximately 941.5g battery efficiently. It is not intended as the default battery for small, weight-sensitive FPV builds.
Large long-range multirotors and cinematic aircraft can benefit from the 274.32Wh energy reserve when hover, cruise and maneuvering currents remain appropriate for the BAK 65E platform.
Explore additional endurance-focused products in the CNHL Li-ion long range FPV battery collection.
High-Energy Battery for Cinematic UAVs
Cinematic UAVs can be a strong application for this 6S2P battery because operating time, energy reserve and payload capability can matter more than minimizing battery mass alone.
The combination of 274.32Wh total energy, approximately 291Wh/kg finished-pack energy density and 2P parallel load sharing creates a strong endurance-oriented battery direction for larger aerial-imaging platforms.
The complete aircraft must still be designed around the battery's weight, dimensions and actual electrical capability.
274Wh-Class Battery for Fixed-Wing UAVs
Fixed-wing UAVs are another natural application for this pack because aerodynamic efficiency can allow a large portion of the available 274.32Wh to be converted into useful cruise range and mission duration.
Mapping, surveying, inspection and long-duration aerial-imaging platforms can benefit from the combination of high total energy and exceptional finished-pack Wh/kg when the airframe has sufficient battery volume and payload margin.
Explore additional mission-oriented configurations in the CNHL Li-ion UAV battery collection.
Also Suitable for Large FPV Wings and Efficient Fixed-Wing Aircraft
Large FPV wings and other efficient fixed-wing aircraft using XT60 can also make effective use of this battery when the airframe is capable of carrying the 941.5g pack without excessive efficiency loss.
Battery-bay dimensions, installed mass, launch current, climbing current and center of gravity should all be checked carefully before selecting such a high-capacity 6S battery.
Browse additional fixed-wing options in the CNHL Li-ion batteries for RC airplanes and fixed-wing aircraft collection.
XT60 Connector with 12AWG Power Leads
LI1270106S70XT60 uses an XT60 main power connector with 12AWG power leads, matching a connector ecosystem commonly used across long-range FPV, FPV wings and UAV systems.
The connector itself does not determine the fundamental capability of the battery. Cell platform, 6S2P architecture, internal connections, wiring, connector, cooling, battery temperature and actual operating load all need to be considered together.
150.5 × 44 × 67mm High-Energy Pack
The finished battery measures approximately 150.5 × 44 × 67mm. Its twelve-cell 6S2P construction makes it substantially larger than a 6S1P pack, so physical compatibility should be checked carefully before purchase.
Allow additional clearance for the XT60 connector, 12AWG power leads, balance wiring, mounting straps and cooling airflow. For fixed-wing use, verify the final center of gravity with the complete 941.5g battery installed in its intended position.
Part of the CNHL 6S 21700 Long Range Platform
This battery belongs to the CNHL 6S 21700 Li-ion battery range, where 1P, 2P and 3P configurations serve different aircraft sizes, energy requirements and load-sharing needs.
It is also part of the CNHL Long Range Series, built around endurance-focused cylindrical Li-ion battery technology.
For broader comparison, explore all CNHL 21700 Li-ion batteries or the complete CNHL Li-ion battery range.
Charging and Battery Safety
Use charging equipment and settings appropriate for the exact finished BAK 65E Li-ion battery specification. Follow the final published charge-voltage and charge-current limits for this pack rather than assuming that settings from another Li-ion, LiPo or LiHV battery are interchangeable.
The BAK 65E is an energy-focused cell platform. Do not interpret the 12700mAh capacity, 274.32Wh stored energy or approximately 291Wh/kg finished-pack energy density as evidence of extreme burst-current capability.
The 2P architecture provides parallel load sharing, but finished-pack capability still depends on the cells, internal connections, 12AWG wiring, XT60 connector, cooling, pack temperature and load duration.
Monitor actual propulsion current and battery temperature during initial aircraft setup under realistic operating conditions before relying on the pack for extended-duration flights or missions.
FAQ: CNHL 12700mAh 6S 21700 Li-ion Battery with XT60
What cells are used in this battery?
The battery uses twelve BAK 65E 6350mAh high-energy 21700 Li-ion cells arranged in a 6S2P configuration.
Why is the pack capacity 12700mAh?
Two 6350mAh cells operate in parallel within each series group, producing a total capacity of 12700mAh while six series groups establish the 6S voltage platform.
How much nominal energy does the battery store?
With a 21.6V nominal pack rating and 12700mAh capacity, nominal stored energy is 274.32Wh.
What is the finished-pack energy density?
Based on 274.32Wh of nominal energy and the pictured production sample weight of approximately 941.5g, calculated finished-pack gravimetric energy density is approximately 291Wh/kg.
How does it compare with the 10000mAh BAK 50D 6S2P XT60 battery?
The 12700mAh BAK 65E version stores 27% more nominal energy while the pictured finished-pack weight increases by only about 10.5%. This gives the 65E battery approximately 14.9% higher finished-pack energy density, while the BAK 50D remains the more power-and-energy-balanced cell direction.
Is this battery suitable for long-range FPV?
Yes, particularly for larger endurance-focused 6S FPV and cinematic platforms capable of efficiently carrying an approximately 941.5g battery. It is not intended as the default battery for small weight-sensitive builds.
Can it be used in fixed-wing UAVs?
Yes. Mapping, surveying, inspection and other long-duration fixed-wing UAV applications are strong directions when the airframe is compatible with the pack's voltage, dimensions, installed mass and electrical capability.
Does 12700mAh mean it has more discharge power than the 10000mAh BAK 50D battery?
No. The larger capacity comes from the high-energy BAK 65E platform. Higher capacity and higher energy density should not be interpreted as greater discharge capability than the more power-oriented BAK 50D platform.
What are the dimensions and weight?
The pictured production battery measures approximately 150.5 × 44 × 67mm and weighs approximately 941.5g.
What connector and wire does it use?
LI1270106S70XT60 uses an XT60 main power connector with 12AWG power leads.
