The CNHL Long Range Series 5000mAh 14.4V 4S1P 21700 Li-ion battery combines four BAK 50D cells into a compact 72Wh battery pack for long-range FPV, FPV wings and efficient fixed-wing aircraft. Built around the 50D cell platform, this pack is designed to balance stored energy with usable power headroom rather than maximizing capacity at the expense of current capability.
At approximately 292.5g for the pictured production sample, the finished battery provides roughly 246Wh/kg of pack-level energy density while including the pack structure, XT60 main connector, 12AWG power leads and balance wiring. This makes it a strong 4S option where both battery weight and usable flight energy matter.
The XT60 configuration is positioned primarily for long-range FPV, FPV wings and other efficient 4S aircraft systems. It is not intended to be treated as a direct high-C LiPo replacement for racing, aggressive freestyle or other applications dominated by repeated extreme current demand.
Quick Battery Fit & Performance Check
| Battery Type |
21700 Li-ion battery pack |
| Cell Platform |
BAK 50D |
| Configuration |
4S1P |
| Capacity |
5000mAh |
| Nominal Voltage |
14.4V |
| Nominal Energy |
72Wh |
| Approx. Weight |
Approx. 292.5g |
| Approx. Pack Energy Density |
Approx. 246Wh/kg |
| Main Connector |
XT60 |
| Power Wire |
12AWG |
| Performance Direction |
Power + Energy Balance |
| Primary Applications |
Long-range FPV, FPV wings and efficient fixed-wing aircraft |
Product Specifications
| SKU |
LI500104S70XT60 |
| Series |
CNHL Long Range Series |
| Chemistry |
Rechargeable Li-ion |
| Cell Format |
21700 |
| Cell Model |
BAK INR2170-50D |
| Configuration |
4S1P / 4 cells |
| Capacity |
5000mAh |
| Nominal Voltage |
14.4V |
| Maximum Charge Voltage |
16.8V (4.20V per cell) |
| Nominal Energy |
72Wh |
| Main Connector |
XT60 |
| Main Power Wire |
12AWG |
| Approx. Dimensions |
73.5 × 43 × 43mm (2.89 × 1.69 × 1.69in) |
| Approx. Weight |
292.5g / 0.65lb |
| Approx. Pack Energy Density |
Approx. 246Wh/kg |
72Wh in a Compact 4S1P 21700 Battery
Four BAK 50D cells are connected in series to create a 14.4V nominal, 5000mAh and 72Wh 4S1P battery. Because the cells are connected in series, voltage and total watt-hours increase while the 5000mAh cell capacity remains unchanged.
The result is a relatively compact four-cell battery architecture that avoids the additional mass of a 2P pack while still providing substantial stored energy for an efficient aircraft.
This makes the pack particularly relevant where battery energy matters but keeping overall aircraft weight under control is equally important.
Approx. 246Wh/kg Pack-Level Energy Density
The pictured production battery weighs approximately 292.5g while storing a nominal 72Wh of energy. That corresponds to approximately 246Wh/kg at the finished-pack level.
Unlike a cell-level Wh/kg figure, this measurement includes the complete battery assembly shown here, including four cells, pack wrapping, main power leads, XT60 connector and balance wiring. It therefore provides a more practical indication of how much nominal battery energy the aircraft receives for the weight it must actually carry.
Actual flight endurance still depends on aircraft efficiency, propulsion setup, wind, payload and usable depth of discharge rather than Wh/kg alone.
Powered by BAK 50D – Power + Energy Balance
The BAK 50D cell is the Power + Energy Balance platform within the CNHL 21700 Long Range family. Each cell provides 5000mAh rated capacity and 18Wh rated energy while retaining greater usable power headroom than an energy-first cell optimized primarily for maximum capacity.
In a 4S1P battery, each propulsion amp passes through a single cell path, so selecting an appropriate cell platform matters. The 50D is therefore a stronger starting point for long-range aircraft that cruise efficiently but still experience higher loads during launch, climb, acceleration or maneuvering.
This does not turn the pack into a high-C racing battery. Battery current and temperature must remain within the limits of the cells and complete pack.
BAK 50D Discharge Capability in a 4S1P Pack
The underlying BAK 50D cell specification allows a maximum discharge condition of up to 5C without a temperature cutoff, with a higher 8C condition only when used under the specified 70°C temperature-cutoff requirement.
For a 5000mAh cell, these correspond numerically to 25A and 40A cell-level test conditions. The 40A figure should not be interpreted as an unrestricted continuous rating for the finished RC battery.
Real finished-pack capability also depends on interconnections, wire, connector, cooling, ambient temperature, duration of load and cell temperature. For aircraft selection, use measured propulsion current and thermal behavior rather than relying on a single maximum current number.
4S Li-ion Battery for Long-Range FPV
The XT60 version of this 4S 5000mAh battery is positioned primarily around long-range FPV. Its compact 4S1P architecture makes it particularly relevant to aircraft where adding a second parallel cell group would create too much extra battery mass.
Efficient long-range multirotors can benefit from the combination of 72Wh stored energy and relatively low finished-pack weight, provided hover, climb and maneuvering current remain within the battery's operating limits.
Browse other endurance-focused options in the CNHL Li-ion long range FPV battery collection.
A Strong 4S Battery Direction for FPV Wings
FPV wings are another strong application for this battery because efficient fixed-wing cruise can require relatively modest electrical power once the aircraft is established in flight.
A 72Wh battery weighing about 292.5g can provide an attractive energy-to-weight combination for appropriately sized wings. The 50D platform also provides useful additional current headroom for launch and climbing compared with a more energy-focused cell direction.
Battery-bay dimensions, launch current, final aircraft weight and center of gravity should always be verified before installation.
4S Li-ion Battery for Efficient RC Airplanes
The battery can also suit efficient fixed-wing RC airplanes designed around a compatible 4S power system. Gliders, sailplanes, utility aircraft and endurance-oriented models can make especially effective use of Li-ion energy when normal cruise current remains moderate.
The XT60 connector is widely used across fixed-wing aircraft as well as FPV systems, so this product should not be viewed as FPV-only. Connector choice reflects the aircraft's electrical installation rather than defining battery performance.
Explore compatible application-oriented products in the CNHL Li-ion batteries for RC airplanes and fixed-wing aircraft collection.
XT60 Connector and 12AWG Power Leads
This version uses an XT60 main power connector with 12AWG leads, making it a natural fit for long-range FPV and fixed-wing systems already built around the XT60 ecosystem.
The connector should not be interpreted as the factor that determines the battery's discharge capability. The BAK 50D cells, 4S1P architecture, internal interconnections, power leads, cooling and operating conditions together determine practical pack performance.
Compact 73.5 × 43 × 43mm Pack Size
The finished pack measures approximately 73.5 × 43 × 43mm. Its four-cell 4S1P structure keeps the package relatively compact compared with higher-capacity 2P Li-ion battery systems.
Always measure the actual usable battery compartment before purchase and allow additional space for the XT60 connector, power leads, balance wiring, securing straps and ventilation.
4S1P vs Higher-Capacity 4S2P Li-ion Batteries
| Configuration |
Main Advantage |
Application Direction |
| 4S1P 5000mAh |
Compact size and lower finished battery weight |
Long-range FPV, FPV wings and weight-sensitive aircraft |
| 4S2P 10000mAh |
Twice the parallel capacity plus load sharing |
Larger FPV wings, fixed-wing aircraft and UAVs capable of carrying more battery mass |
The larger pack is not automatically the longer-flying choice for every aircraft. The benefit of additional watt-hours must be compared with the extra mass the aircraft must carry.
Part of the CNHL 4S 21700 Long Range Platform
This battery belongs to the CNHL 4S 21700 Li-ion battery range, which includes multiple capacities and both power-balanced and energy-first cell platforms.
It is also part of the CNHL Long Range Series, bringing together cylindrical Li-ion battery solutions for long-range FPV, fixed-wing aircraft and UAV applications.
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. This 4S pack uses BAK 50D cells with a maximum charge voltage of 4.20V per cell, or 16.8V for the complete 4S battery.
Do not assume that charger settings, low-voltage alarms or cutoff values developed for another lithium chemistry are automatically appropriate. Confirm the selected Li-ion charging profile and battery-monitoring strategy before use.
Do not short-circuit, crush, puncture, reverse-polarize, overcharge, over-discharge or expose the battery to excessive heat. Inspect the pack, wires, connector and wrapping before charging or flight, and stop using a battery that is damaged, excessively hot or electrically abnormal.
Actual current capability depends on the complete battery and operating environment. Monitor pack temperature during initial setup and confirm that the propulsion system remains within appropriate electrical and thermal limits.
FAQ: CNHL 5000mAh 4S 21700 Li-ion Battery
What cells are used in this 4S Li-ion battery?
The battery uses four BAK INR2170-50D 5000mAh 21700 Li-ion cells in a 4S1P configuration.
How much energy does the battery store?
The battery has a nominal voltage of 14.4V and a capacity of 5000mAh, providing 72Wh of nominal stored energy.
What is the energy density of the finished pack?
Using the pictured sample weight of approximately 292.5g and 72Wh nominal energy, calculated finished-pack gravimetric energy density is approximately 246Wh/kg.
Is this battery designed for long-range FPV?
Yes. Long-range FPV is one of the primary applications for this XT60 4S1P configuration, provided the aircraft's sustained and higher-load current demands remain within the battery's electrical and thermal limits.
Can I use this battery in an FPV wing or RC airplane?
Yes, it can suit efficient 4S FPV wings and fixed-wing RC airplanes when battery dimensions, weight, center of gravity, voltage and propulsion current are compatible with the aircraft.
What are the dimensions and weight?
The pictured pack measures approximately 73.5 × 43 × 43mm and weighs approximately 292.5g.
What connector and wire does it use?
This SKU uses an XT60 main connector with 12AWG power leads.
Is this the same as a 4S LiPo battery?
No. This is a cylindrical-cell Li-ion battery. Do not assume direct interchangeability with a 4S LiPo based only on S count or connector. Check actual voltage behavior, current demand, charging settings, dimensions, weight and aircraft CG.
What is the maximum charge voltage?
The maximum charge voltage is 16.8V for the complete 4S pack, corresponding to 4.20V per cell.
