CNHL (China Hobby Line) Long Range Series 19000mAh 21.6V 6S 21700 Li-ion
Series: CNHL (China Hobby Line) Batteries for drones
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The CNHL Long Range 19000mAh 6S3P is a large lithium-ion pack from CNHL (China Hobby Line) for mid-size multicopters on long routes, such as survey and inspection work. It holds 18 BAK 65E cylindrical cells in the 21700 format: six series stages with three cells in parallel each.
A nominal 21.6 V and 19 Ah give 410.4 Wh; at 1,400 g that is about 293 Wh/kg at pack level. The 19,000 mAh is a rounded commercial rating: three parallel cells of 6,350 mAh each add up to 19,050 mAh. The continuous current of the pack is the cell value times three. The connector is an XT90; a version with an XT60 exists too.
410.4 Wh is far above 160 Wh. Under the IATA passenger leaflet (February 2019 edition) the pack travels only as dangerous-goods cargo, not as a spare in hand baggage; every shipment requires UN 38.3 testing. Airline rules may be stricter, and the current edition should be checked before travel. At 1.4 kg the pack contributes substantially to the take-off mass of a mid-size aircraft.
In selection the ratio of energy to hover current counts: the pack is meant for long flights at low current, not for load peaks. With 18 cells and many connecting strips the number of possible weak points grows; the six group voltages at the seven-pin balance lead are what one checks. A single weak cell in a group of three barely shows there and appears rather as heat and growing voltage sag. In winter the usable capacity falls; storage is in the middle of the charge range.
Technical data
Other data
| Capacity (mAh) | 19,000correct |
|---|---|
| Cell chemistry | Li-Ioncorrect |
| Cell count (S) | 6Scorrect |
| Connector | XT90correct |
| Energy (Wh) | 410.4correct |
| Energy density (Wh/kg) | 293 kgcorrect |
| Form factor | Packcorrect |
| Nominal voltage (V) | 21.6 Vcorrect |
| Weight (g) | 1,400correct |
What to check before buying
- Check the hour meter against the service records — a replaced instrument is the most common gap.
- Compare the data plate and chassis number with the papers.
- Ask about parts availability for this build year — the running costs hang on it.
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