The CNHL Long Range Series 19000mAh 21.6V 6S3P 21700 Li-ion battery combines eighteen BAK 65E high-energy cells into a 410.4Wh maximum-endurance battery for large UAVs, fixed-wing UAVs, mapping aircraft and other long-duration platforms using XT60. Its 6S3P architecture places three high-energy cells in each parallel group, combining a very large onboard energy reserve with triple-parallel load sharing.
At approximately 1393.5g for the pictured production sample, the complete battery achieves approximately 294Wh/kg of finished-pack gravimetric energy density. This figure includes all eighteen 21700 cells, the complete battery structure, XT60 connector, 12AWG power leads and balance wiring.
This is the Maximum Energy / Maximum Endurance end of the CNHL 21700 Long Range platform. It is designed for large, efficient aircraft that can convert more than 400Wh of onboard energy into useful mission time rather than for small, weight-sensitive or high-burst applications.
Quick Battery Fit & Performance Check
| Battery Type |
21700 Li-ion battery pack |
| Cell Platform |
BAK 65E |
| Configuration |
6S3P / 18 cells |
| Commercial Capacity |
19000mAh |
| Nominal Voltage |
21.6V |
| Nominal Pack Energy |
410.4Wh |
| Approx. Weight |
Approx. 1393.5g |
| Approx. Pack Energy Density |
Approx. 294Wh/kg |
| Main Connector |
XT60 |
| Power Wire |
12AWG |
| Performance Direction |
Maximum Energy / Maximum Endurance |
| Primary Applications |
Large UAVs, fixed-wing UAVs, mapping, survey, inspection and maximum-endurance aircraft |
Product Specifications
| SKU |
LI1900106S70XT60 |
| Series |
CNHL Long Range Series |
| Chemistry |
Rechargeable Li-ion |
| Cell Format |
21700 |
| Cell Model |
BAK 65E |
| Configuration |
6S3P / 18 cells |
| Commercial Capacity |
19000mAh |
| Nominal Voltage |
21.6V |
| Nominal Pack Energy |
410.4Wh |
| Main Connector |
XT60 |
| Main Power Wire |
12AWG |
| Approx. Dimensions |
148 × 66 × 66mm (5.83 × 2.60 × 2.60in) |
| Approx. Weight |
1393.5g / 3.07lb |
| Approx. Pack Energy Density |
Approx. 294Wh/kg |
410.4Wh of Maximum-Endurance Mission Energy
LI1900106S70XT60 carries 410.4Wh of nominal stored energy, moving it into a different class from ordinary hobby-size 6S batteries. This is a battery designed around large-aircraft mission duration, not simply a higher mAh number.
For large fixed-wing UAVs, mapping aircraft and other efficient endurance platforms, more than 400Wh of onboard energy can provide a substantial mission-energy reserve when the airframe is capable of carrying the approximately 1.39kg battery efficiently.
The final endurance benefit depends on the aircraft's propulsion efficiency, payload, aerodynamic performance, operating profile and usable battery energy.
Approx. 294Wh/kg Finished-Pack Energy Density
One of the strongest specifications of this battery is its approximately 294Wh/kg finished-pack gravimetric energy density.
This is not a bare-cell figure. It is calculated from the complete 410.4Wh battery at approximately 1393.5g, including all eighteen cells, pack structure, XT60 connector, 12AWG wiring and balance lead.
For endurance aircraft, finished-pack Wh/kg is especially meaningful because it describes how much nominal energy the aircraft actually carries for each kilogram of complete battery mass.
About 27% More Energy with Only About 11% More Weight
The BAK 65E advantage becomes very clear when this battery is compared with the corresponding CNHL 15000mAh BAK 50D 6S3P XT60 battery.
| Specification |
15000mAh 50D 6S3P |
19000mAh 65E 6S3P |
| Pack Energy |
324Wh |
410.4Wh |
| Approx. Weight |
1259g |
1393.5g |
| Pack Wh/kg |
Approx. 257Wh/kg |
Approx. 294Wh/kg |
| Cell Direction |
Power + Energy Balance |
Energy First / Maximum Endurance |
The BAK 65E version provides approximately 26.7% more nominal energy, while the pictured finished-pack weight increases by only about 10.7%. The result is approximately 14.5% higher finished-pack gravimetric energy density.
That difference captures the purpose of the 65E platform: carry substantially more mission energy without battery mass rising at the same rate.
Powered by BAK 65E – Maximum Energy at Large Scale
The BAK 65E is the high-energy cell platform within the CNHL 21700 Long Range Series. Its defining advantage is maximum stored energy relative to cell mass rather than extreme burst-current capability.
In this 6S3P configuration, the 65E's energy-density advantage is scaled across eighteen cells, producing a finished battery with more than 400Wh of nominal energy while remaining just under 1.4kg.
For platforms with greater sustained or repeated high-current demand, the BAK 50D Power + Energy Balance platform may remain the more appropriate starting point.
19000mAh 6S3P High-Energy Architecture
Eighteen BAK 65E cells are arranged as 6S3P. Six series groups establish the 21.6V nominal voltage platform, while three high-capacity cells operate in parallel within each group.
CNHL uses a commercial pack capacity designation of 19000mAh for this 6S3P battery. The 3P architecture also allows electrical load to be shared across three cells within every parallel group.
This combination makes the battery especially relevant to large endurance platforms that prioritize maximum stored energy and long operating time over minimum pack mass.
Flagship Battery for Large UAV Platforms
Large UAVs are the primary application direction for this battery. The 410.4Wh energy reserve can support long-duration mission profiles on platforms designed around substantial onboard battery energy.
Mapping, surveying, inspection, aerial-imaging and other endurance-oriented UAV systems can benefit from the combination of very high total energy, approximately 294Wh/kg finished-pack energy density and 3P parallel load sharing.
Explore additional mission-oriented configurations in the CNHL Li-ion UAV battery collection.
410.4Wh Battery for Fixed-Wing UAVs
Large fixed-wing UAVs are particularly well matched to a battery with this much stored energy because aerodynamic efficiency can convert a large fraction of the 410.4Wh energy reserve into useful range and operating time.
For mapping and survey aircraft, the combination of high Wh/kg and large total energy can be especially valuable when mission duration and coverage area are primary design goals.
Battery-bay volume, installed mass, center of gravity, launch load and propulsion current should all be considered as part of the complete aircraft design.
Built for Mapping, Survey and Inspection Missions
Mapping, survey and inspection platforms often benefit more from usable watt-hours and energy carried per kilogram than from minimizing battery size alone. That requirement aligns directly with the BAK 65E's Energy First design direction.
The combination of approximately 294Wh/kg and more than 400Wh of total nominal energy makes this battery a strong direction for large mission-oriented platforms capable of carrying its approximately 1.39kg installed mass.
Also Suitable for Very Large Long-Range FPV Platforms
Very large long-range FPV aircraft using XT60 can also make use of this battery, but at 1393.5g it should not be positioned as a conventional hobby FPV pack.
Large fixed-wing FPV aircraft and specialized heavy multirotor platforms are more realistic directions when their propulsion system and airframe are designed around the battery's mass and energy capacity.
Browse other long-range options in the CNHL Li-ion long range FPV battery collection.
XT60 Connector with 12AWG Power Leads
LI1900106S70XT60 uses an XT60 main connector with 12AWG power leads, matching systems that are already standardized around XT60.
Connector type does not define the fundamental capability of the BAK 65E cells. The 6S3P architecture, internal construction, wire size, connector, cooling, pack temperature and actual operating load must all be considered together.
148 × 66 × 66mm 18-Cell High-Energy Battery
The complete battery measures approximately 148 × 66 × 66mm and weighs approximately 1393.5g. This is a substantial eighteen-cell battery designed for large-aircraft installations.
Allow additional clearance for the XT60 connector, 12AWG leads, balance wiring, mounting hardware and cooling airflow. For fixed-wing aircraft, verify the final center of gravity with the complete battery installed in its intended operating 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, mission-energy requirements and endurance targets.
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 battery 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 19000mAh commercial capacity, 410.4Wh energy or approximately 294Wh/kg finished-pack energy density as evidence of extreme burst-current capability.
The 3P architecture provides parallel load sharing, but finished-pack capability still depends on cell limits, internal connections, 12AWG wiring, XT60 connector, cooling, battery temperature and load duration.
Monitor actual propulsion current and battery temperature during initial system testing under realistic operating conditions before relying on the battery for extended-duration missions.
FAQ: CNHL 19000mAh 6S 21700 Li-ion Battery with XT60
What cells are used in this battery?
The battery uses eighteen BAK 65E high-energy 21700 Li-ion cells arranged in a 6S3P configuration.
Why is the commercial pack capacity 19000mAh?
The pack uses three high-capacity BAK 65E cells in parallel within each series group. CNHL uses 19000mAh as the commercial capacity designation for this 6S3P battery.
How much nominal energy does the battery store?
Using the 21.6V nominal pack rating and 19000mAh commercial capacity, nominal stored energy is 410.4Wh.
What is the finished-pack energy density?
Based on 410.4Wh nominal energy and the pictured production sample weight of approximately 1393.5g, calculated finished-pack gravimetric energy density is approximately 294Wh/kg.
How does it compare with the 15000mAh BAK 50D 6S3P battery?
The 19000mAh BAK 65E version provides approximately 26.7% more nominal energy while the pictured finished-pack weight increases by only about 10.7%. The result is approximately 14.5% higher finished-pack energy density, while the BAK 50D remains the more power-and-energy-balanced cell direction.
Is this battery intended for UAVs?
Yes. Large UAVs, fixed-wing UAVs, mapping, surveying, inspection and other maximum-endurance platforms are the primary application directions when the aircraft is compatible with the battery's size, mass and electrical capability.
Can it be used for long-range FPV?
Yes, but primarily on very large long-range FPV aircraft capable of efficiently carrying an approximately 1.39kg battery. It should not be positioned as a conventional lightweight FPV battery.
Does 19000mAh mean it has more discharge power than the 15000mAh BAK 50D battery?
No. The larger capacity comes from the high-energy BAK 65E platform. Higher capacity and higher Wh/kg 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 148 × 66 × 66mm and weighs approximately 1393.5g.
What connector and wire does it use?
LI1900106S70XT60 uses an XT60 main power connector with 12AWG power leads.
