The CNHL Long Range Series 10000mAh 21.6V 6S2P 21700 Li-ion battery combines twelve BAK 50D cells into a 216Wh extended-range power system for larger RC airplanes, fixed-wing aircraft and endurance-oriented UAV platforms using XT90. Its 6S2P architecture doubles the parallel capacity of a 5000mAh 6S1P pack while allowing electrical load to be shared across two cells in each parallel group.
At approximately 857.5g for the pictured production sample, the complete battery provides approximately 252Wh/kg of finished-pack energy density. This figure includes all twelve 21700 cells, the complete pack structure, XT90 connector, 12AWG power leads and balance wiring.
Built around the BAK 50D Power + Energy Balance platform, this battery is positioned for larger endurance aircraft that need substantially more stored energy than a compact 1P battery while also benefiting from the current-sharing characteristics of a 2P architecture. XT90 matches a different aircraft connector ecosystem; it does not increase the fundamental capability of the BAK 50D cells compared with the corresponding XT60 version.
Quick Battery Fit & Performance Check
| Battery Type |
21700 Li-ion battery pack |
| Cell Platform |
BAK 50D |
| Configuration |
6S2P / 12 cells |
| Capacity |
10000mAh |
| Nominal Voltage |
21.6V |
| Nominal Pack Energy |
216Wh |
| Approx. Weight |
Approx. 857.5g |
| Approx. Pack Energy Density |
Approx. 252Wh/kg |
| Main Connector |
XT90 |
| Power Wire |
12AWG |
| Performance Direction |
Extended Range / Power + Energy Balance |
| Primary Applications |
Larger RC airplanes, fixed-wing UAVs, mapping platforms and endurance aircraft |
Product Specifications
| SKU |
LI1000106S70XT90 |
| Series |
CNHL Long Range Series |
| Chemistry |
Rechargeable Li-ion |
| Cell Format |
21700 |
| Cell Model |
BAK INR2170-50D |
| Configuration |
6S2P / 12 cells |
| Capacity |
10000mAh |
| Nominal Voltage |
21.6V |
| Maximum Charge Voltage |
25.2V (4.20V per cell) |
| Nominal Pack Energy |
216Wh |
| Main Connector |
XT90 |
| Main Power Wire |
12AWG |
| Approx. Dimensions |
149 × 43 × 64mm (5.87 × 1.69 × 2.52in) |
| Approx. Weight |
857.5g / 1.89lb |
| Approx. Pack Energy Density |
Approx. 252Wh/kg |
216Wh Extended-Range 6S2P Battery
Twelve BAK 50D cells are arranged as 6S2P to create a 21.6V nominal battery with 10000mAh capacity and 216Wh of nominal stored energy.
Compared with the corresponding 5000mAh 6S1P battery, this configuration doubles nominal capacity and total stored energy while adding a second cell to every parallel group.
That makes it a natural step up for larger fixed-wing aircraft and UAV systems where 108Wh is not enough mission energy and the airframe can efficiently accommodate the additional battery mass.
Approx. 252Wh/kg Finished-Pack Energy Density
The pictured production battery stores 216Wh while weighing approximately 857.5g, producing approximately 252Wh/kg of finished-pack gravimetric energy density.
This figure includes all twelve cells plus the complete pack assembly, XT90 connector, 12AWG power wiring and balance lead. It therefore represents the energy-to-weight performance of the battery actually carried by the aircraft.
For endurance-oriented fixed-wing platforms, this is a useful metric because additional capacity only improves real mission time when the extra watt-hours justify the additional installed mass.
6S2P: Twice the Energy Plus Parallel Load Sharing
The 2P architecture does more than increase capacity. Each series group contains two cells operating in parallel, allowing electrical demand to be shared between them rather than relying on a single cell path.
Compared with a 5000mAh 6S1P 50D battery, this creates twice the nominal capacity, twice the nominal stored energy and greater pack-level current-sharing capability.
Finished-pack current capability still depends on the cell limits, interconnections, 12AWG wiring, XT90 connector, battery temperature, cooling and load duration. A 2P architecture should not be treated as an unrestricted current multiplier.
Powered by BAK 50D – Power + Energy Balance
The BAK 50D is the Power + Energy Balance platform within the CNHL 21700 Long Range Series. It provides substantial cell-level energy while offering more usable power headroom than an energy-first cell optimized primarily around maximum Wh/kg.
In a 6S2P battery, the balanced nature of the 50D is reinforced by parallel load sharing. This makes the pack especially relevant to larger aircraft with both significant energy requirements and higher sustained electrical loads than a compact 6S1P battery is intended to support.
The battery remains an endurance-oriented Li-ion solution rather than a replacement for high-C LiPo systems used for repeated extreme burst output.
10000mAh 6S Li-ion Battery for Larger RC Airplanes
This XT90 configuration is positioned primarily for larger efficient 6S RC airplanes and fixed-wing aircraft capable of making useful use of its 216Wh energy reserve.
Larger utility aircraft, endurance-oriented fixed-wing models, gliders and other platforms with sufficient battery volume can benefit when the increased flight energy justifies carrying an approximately 857.5g battery.
Browse other endurance-oriented options in the CNHL Li-ion batteries for RC airplanes and fixed-wing aircraft collection.
216Wh Battery for Fixed-Wing UAVs
Fixed-wing UAVs are one of the strongest application directions for this battery. Their aerodynamic efficiency can allow a significant portion of the 216Wh energy budget to be converted into useful range and mission time.
Mapping, inspection, surveying and aerial-imaging aircraft can benefit from the combination of substantial mission energy and parallel load sharing when the airframe is designed around the battery's size and mass.
Explore additional mission-oriented configurations in the CNHL Li-ion UAV battery range.
A Strong Direction for Mapping and Inspection Platforms
For mapping and inspection missions, total useful operating time can matter more than minimizing battery weight alone. A 216Wh 6S2P battery provides a substantial onboard energy reserve while retaining approximately 252Wh/kg at the complete-pack level.
The final benefit depends on aircraft efficiency, mission speed, payload, battery placement and propulsion current. The pack should be selected as part of the complete aircraft energy budget rather than from capacity alone.
XT90 Connector with 12AWG Power Leads
LI1000106S70XT90 uses an XT90 main connector with 12AWG power leads, making it a natural configuration for larger fixed-wing aircraft and UAV systems already standardized around XT90.
The XT90 and XT60 versions use the same BAK 50D cells and the same 6S2P architecture. XT90 therefore does not make the underlying battery chemistry or cells more powerful.
Choose XT90 because it matches the aircraft's electrical system, not because it represents a higher-performance cell configuration.
149 × 43 × 64mm 6S2P Battery Size
The finished pack measures approximately 149 × 43 × 64mm. Its twelve-cell architecture makes it substantially larger than a 6S1P battery, so physical fit should be checked carefully before purchase.
Allow additional clearance for the XT90 connector, 12AWG leads, balance wiring, securing straps and airflow. For fixed-wing aircraft, verify the final center of gravity with the complete 857.5g battery installed in its intended position.
5000mAh 6S1P vs 10000mAh 6S2P
| Specification |
5000mAh 6S1P XT90 |
10000mAh 6S2P XT90 |
| Cell Count |
6 |
12 |
| Capacity |
5000mAh |
10000mAh |
| Energy |
108Wh |
216Wh |
| Approx. Weight |
436g |
857.5g |
| Pack Wh/kg |
Approx. 248Wh/kg |
Approx. 252Wh/kg |
| Primary Direction |
Compact / Weight-Conscious |
Extended Range / Larger Aircraft |
The 6S2P pack doubles nominal energy from 108Wh to 216Wh while pictured finished-pack weight increases by approximately 96.7%. It therefore preserves similar energy-to-weight efficiency while providing far more total mission energy and the additional benefit of parallel load sharing.
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 architectures serve different aircraft sizes and mission-energy requirements.
It is also part of the CNHL Long Range Series, designed 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 a charger and charge mode appropriate for Li-ion chemistry. The BAK 50D cells use a maximum charge voltage of 4.20V per cell, or 25.2V for this complete 6S battery.
Do not assume that 6S Li-ion, LiPo and LiHV batteries use identical charging profiles, warning thresholds or low-voltage cutoff settings. Confirm battery chemistry and actual voltage requirements before use.
The 2P architecture provides parallel load sharing, but finished-pack capability still depends on cell limits, interconnections, 12AWG wiring, XT90 connector, cooling, ambient conditions and pack temperature.
Monitor propulsion current and battery temperature during initial aircraft setup under realistic loads before relying on the pack for extended-duration flights or missions.
FAQ: CNHL 10000mAh 6S 21700 Li-ion Battery with XT90
What cells are used in this battery?
The battery uses twelve BAK INR2170-50D 5000mAh 21700 Li-ion cells arranged in a 6S2P configuration.
How much energy does this battery store?
It provides 216Wh of nominal stored energy from a 21.6V nominal voltage and 10000mAh capacity.
What is the finished-pack energy density?
Based on the pictured production sample weight of approximately 857.5g and 216Wh nominal energy, calculated finished-pack gravimetric energy density is approximately 252Wh/kg.
What is the advantage of 6S2P over 6S1P?
A 6S2P architecture doubles nominal capacity and stored energy compared with a 6S1P battery using the same cells, while also allowing electrical load to be shared across two cells in each parallel group. The trade-off is a larger and heavier twelve-cell battery.
Is this battery intended for RC airplanes?
Yes. Larger efficient 6S fixed-wing RC airplanes are one of the primary application directions for this XT90 configuration, provided the aircraft can accommodate the battery's size, weight and electrical requirements.
Can it be used in fixed-wing UAVs?
Yes. Mapping, inspection, surveying and other endurance-oriented fixed-wing UAVs can benefit from the 216Wh energy capacity and 2P load-sharing architecture when the platform is designed around the battery's installed mass.
Is the XT90 version more powerful than the XT60 version?
No. Both versions use the same BAK 50D cells and 6S2P architecture. XT90 changes the connector ecosystem and slightly increases finished battery weight, but it does not increase the fundamental capability of the cells.
What are the dimensions and weight?
The pictured production battery measures approximately 149 × 43 × 64mm and weighs approximately 857.5g.
What connector and wire does it use?
LI1000106S70XT90 uses an XT90 main power connector with 12AWG power leads.
