Product overview
The CNHL Long Range Series BAK 50D 5000mAh 3.6V 21700 Li-ion Battery Cell uses the BAK INR2170-50D rechargeable cylindrical cell. Its intended role is energy storage for custom long-range FPV, RC airplane and UAV battery packs, with a balance between stored energy and usable current capability. Each cell provides 5000mAh rated capacity and 18.00Wh rated energy. Custom parallel arrangements offer nominal capacities of 5000mAh in 1P, 10000mAh in 2P and 15000mAh in 3P, supporting different pack sizes and load-sharing requirements.
Physical integration must accommodate an approximately 21mm diameter and 70mm length, with a specification envelope of diameter ≤21.45mm and length ≤70.75mm. The photographed sample weighs approximately 66g. Supply consists of one cell, without a finished pack, main power connector or balance connector; assembly requires suitable battery-building knowledge and equipment. Charging uses a 4.20V maximum per cell and a 2.5A standard current. The 15A maximum is not the standard cycling rate. Discharge limits are up to 5C without temperature cutoff or up to 8C with the specified 70°C cutoff.
Specifications
| Specification | Value & conditions |
|---|---|
| Cell format | 21700 cylindrical Li-ion cell |
| Cell manufacturer and model | BAK INR2170-50D |
| Rated capacity | 5000mAh |
| Nominal voltage | 3.6V |
| Rated energy | 18.00Wh (also stated as 18Wh) |
| Performance direction | Power + Energy Balance |
| Primary applications | Custom long-range FPV, RC airplane and UAV Li-ion battery packs |
| SKU | LI500101S70 |
| Brand and series | CNHL Long Range Series |
| Chemistry | Rechargeable Li-ion |
| Typical capacity | 5050mAh |
| Typical energy | 18.18Wh |
| Maximum charge voltage | 4.20VPer cell. |
| Standard charge current | 2.5A (0.5C) |
| Maximum charge current | 15A (3C, not intended as the standard cycling charge rate)Not intended as the standard cycling charge rate. |
| Standard discharge current | 1A (0.2C) |
| Maximum discharge current | Up to 5C without temperature cutoff; up to 8C under the specified 70°C temperature-cutoff conditionUp to 5C without temperature cutoff; up to 8C under the specified 70°C temperature-cutoff condition. |
| AC internal resistance | ≤5mΩ at 1kHzAt 1kHz. |
| Approximate size | Approx. 21mm diameter × 70mm length |
| Specification envelope | Diameter ≤21.45mm; length ≤70.75mm |
| Approximate actual weight | Approx. 66gPhotographed production sample; small production variation can occur between individual cells. |
| Supplied configuration | Individual cell; no complete multi-cell RC battery pack, main power connector, balance connector or finished pack assembly.One individual 21700 cylindrical Li-ion cell. |
| Parallel pack capacity options |
|
| Integration requirements | Requires appropriate Li-ion battery-building knowledge and equipment for cell matching, electrical connections, insulation, pack construction, charging and protection.Custom Li-ion pack construction. |
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