DIY500AMP Cell Intelligence
Ampace JP50P1
Built for high-current packs where voltage sag, heat, and current sharing matter.
Manufacturer data sheet
Cell at a glance
Manufacturer datasheet matched
Full technical specification
| Store SKU | AMP-JP50-21700-B1 |
|---|---|
| Manufacturer / model | Ampace JP50P1 |
| Format / chemistry | 21700 / Li-ion |
| Rated capacity | 5000 mAh (minimum 4900 mAh) |
| Nominal voltage | 3.58V |
| Full-charge voltage | 4.2V |
| Discharge cutoff voltage | 2.5V |
| Standard charge current | 2.5A |
| Maximum charge current | 15A only at 25C to 60C cell surface; lower limits apply below 25C |
| Continuous discharge rating | 40A; observe manufacturer thermal protection |
| Temperature-limited continuous rating | 60A with 80C cell-surface cutoff |
| Initial internal resistance | <=4 mOhm |
| Weight | 72g |
| Dimensions | Diameter max 21.35mm, Height max 70.45mm |
| Charge temperature range | Cell surface -10C to 60C; temperature-dependent current and voltage limits apply |
| Discharge temperature range | Cell surface -20C to 80C; restart discharge below 60C |
| Cycle-life reference | At 25+/-2C, capacity retention >= 60% after 600 cycles: 15A CC-CV charge to 4.2V,250mA termination; 30A discharge to 2.5V. If surface temperature exceeds 80C, cool to 50C before continuing discharge. Rest at least 30 min after charge and discharge. See the manufacturer protocol for other cycle conditions. |
| 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-current packs where power delivery and voltage stability matter more than maximum runtime, with load and heat validated below the data sheet ceiling.
A better alternative when
Choose a higher-capacity cell when runtime and energy density matter more than strong current delivery and low voltage sag.
Application guide
Where this cell fits
RC / UAV, high-current tools, e-bike / mobility
Runtime-first packs, energy storage, 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.JP50P1 charge limits: 2A to 4.1V at -10C to below 0C; 2.5A to 4.2V at 0C to below 10C; 8A at 10C to below 25C; 15A at 25C to 60C. Begin charging below 45C. Discharge is 40A without triggering thermal cutoff, or 60A with 80C cutoff. Ratings are manufacturer maxima, not recommended long-term pack currents.
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 with 80C cell-surface cutoff continuous-current ceiling.
- Raw capacity
- 4974 mAh
- Raw energy
- 17.24 Wh
- Max observed temp
- 57.8C
- Raw capacity
- 3366 mAh
- Raw energy
- 11.9 Wh
- Max observed temp
- 80C
This run uses the manufacturer's temperature-limited current rating.
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: 10A to 60A
- Best raw capacity
- 4974 mAh
- Best raw energy
- 17.29 Wh
- Published continuous-current ceiling
- 60A with 80C cell-surface 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
Ampace JP50P1 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.
