DIY500AMP Cell Intelligence
Molicel P50B
A 21700 power cell combining 5000mAh typical capacity with a temperature-limited high-current rating. Sold as one individual cell. Product photographs illustrate the model; batch markings may vary. BatteryRealData results below are from previously tested samples, not the incoming shipment.
Manufacturer data sheet
Cell at a glance
Molicel P50B datasheet v1.1 verified; sold individually
Full technical specification
| Store SKU | MOLICEL-P50B-21700-B1 |
|---|---|
| Manufacturer / model | Molicel INR-21700-P50B |
| Format / chemistry | 21700 / INR |
| Rated capacity | 5000 mAh (minimum 4850 mAh) |
| Nominal voltage | 3.6V |
| Full-charge voltage | 4.2V |
| Discharge cutoff voltage | 2.5V |
| Standard charge current | 5A CC/CV; 70C cutoff |
| Maximum charge current | 25A / 70C cutoff |
| Temperature-limited continuous rating | 60A continuous / 80C cutoff |
| Initial internal resistance | 6.5 mOhm typical AC at 30% SOC; 12.8 mOhm typical DC at 50% SOC |
| Weight | 71 g maximum |
| Dimensions | 21.55 mm max diameter x 70.15 mm max height |
| Charge temperature range | Ambient -20C to 60C; temperature-dependent current limits apply |
| Discharge temperature range | Ambient -40C to 60C; 80C cell cutoff |
| Cycle-life reference | See manufacturer cycle-characteristic curves; results depend on charge, discharge and temperature. |
| Protection | Unprotected industrial cell. The finished device or battery pack must provide appropriate protection. |
Simple selection guide
Is this the right cell for your build?
Match the cell to the job, then confirm the manufacturer limits for the finished pack.Best match
High-load packs that also need strong runtime, including RC, UAV, mobility, tools, and compact performance builds within the data sheet limits.
A better alternative when
Choose a high-capacity cell when maximum runtime at modest current matters more, or a dedicated power cell when minimum voltage sag matters more than capacity.
Application guide
Where this cell fits
RC / UAV, power tools, e-bike / mobility, runtime-focused packs
Energy storage and backup systems
Vape and e-cigarette devices
Keep the finished pack within every manufacturer voltage, current, and temperature limit.
Engineering limits
Current limits
Manufacturer continuous-discharge ratings only. Pulse and over-current laboratory values stay on BatteryRealData.Molicel specifies 60A continuous discharge only with an 80C cell-temperature cutoff, and 25A maximum charge with a 70C cutoff. These maxima are not recommended long-term pack-design currents. Validate BMS protection, fusing, insulation, conductor sizing, current sharing and cooling. Do not assume maximum charge current across the full ambient range. Not for e-cigarettes or vaping.
Show current and runtime examples Optional 1C references and idealized runtime estimates
Current envelope
Relative current values from the matched manufacturer data sheet. Bar length is comparative, not a recommendation.
Current and runtime translation
Idealized constant-current runtime based on nominal capacity. Real packs deliver less because voltage sag, heat, cutoff voltage, and losses matter.
Real discharge testing
Tested by BatteryRealData
This Shopify summary includes only tests at or below the published 60A / 80C cutoff continuous-current ceiling.
- Raw capacity
- 4703.27 mAh
- Raw energy
- 16.61 Wh
- Max observed temp
- 34.86C
- Raw capacity
- 4656.72 mAh
- Raw energy
- 15.42 Wh
- Max observed temp
- 75.55C
These curves are observed laboratory results, not operating recommendations. Voltage and temperature are plotted against measured raw capacity for the selected run.
Displayed test-current range: 5A to 30A
- Best raw capacity
- 4703.27 mAh
- Best raw energy
- 16.61 Wh
- Published continuous-current ceiling
- 60A / 80C cutoff
Only tests inside the matched data sheet continuous-current range are summarized here. BatteryRealData may separately include controlled pulse or over-current research; those laboratory stress tests are not product ratings or operating instructions.
View datasheet-range graphs and test resultsRead before purchase and use
Safety warning for lithium-ion battery usage
Customers should understand lithium-ion battery handling and safety before purchase. Lithium-ion cells can cause fire, burns, venting, or explosion if misused, overcharged, shorted, crushed, punctured, overheated, or physically damaged.
Use only with a compatible lithium-ion charger, BMS, or protection circuit designed for the cell voltage, current, and temperature limits. Never leave batteries charging unattended. Charge and store on a fire-resistant surface away from combustible materials.
By purchasing and using lithium-ion cells, the user assumes responsibility for correct handling, storage, charging, pack design, and application suitability.
Important usage guidelines
- Not for use in e-cigarettes, vape devices, or similar devices.
- Always use in a protected battery pack or properly controlled test fixture.
- Do not exceed the data sheet maximum charge voltage.
- Do not discharge below the recommended system cutoff voltage.
- Do not charge or discharge outside the data sheet temperature limits.
- Do not carry loose cells in pockets, bags, or toolboxes where they can contact keys, coins, tools, or other metal objects.
- Store and ship cells in protective cases or insulated packaging.
- Do not use batteries with torn wrappers, missing insulator rings, dents, rust, odor, leakage, deformation, heat damage, or visible damage.
- Do not solder directly onto cell terminals. Use proper spot-welding methods only.
- Do not alter, dismantle, puncture, crush, burn, immerse in liquid, or expose cells to open flame.
- Keep away from children and pets.
Pass all safety information to end users to promote safe handling, correct pack design, and proper use.
Common questions
Molicel P50B FAQ
Does this cell include built-in protection?
No. It is an unprotected industrial cell. A compatible device or finished pack must provide over-charge, over-discharge, over-current, short-circuit, and thermal protection as required by the application.
Is the maximum current the normal operating target?
No. A manufacturer maximum is a limit under stated conditions, not an automatic long-term design target. Use headroom and validate the finished pack under the actual load, duty cycle, cooling, and temperature limits.
Can I solder directly to the cell?
No. Direct soldering can overheat and damage the cell. Use correctly configured spot welding and suitable interconnect material.
Can I mix this cell with another model or an older batch?
Do not mix different models, ages, capacities, internal-resistance groups, batches, or states of charge in one pack. Build with matched cells and balanced parallel groups.
Can I carry or store the cell loose?
No. Isolate the terminals in a protective case or insulated packaging. Never carry loose cells with keys, coins, tools, or other conductive objects.
