3.6V 5.0Ah 21700 Battery Pack — 1S1P Button Top
Overview
Moving up to the 21700 format raises single-cell capacity to 5.0Ah typical in the same protected 1S1P button-top format, for devices with room for the larger cell. Charge limits are 0.5C standard and 1C maximum; discharge is 0.2C standard and 1C maximum continuous.
Specifications
| Item | Specification |
|---|---|
| Configuration | 1S1P, button top |
| Cell | Samsung INR21700 |
| Nominal voltage | 3.6V |
| Capacity | 5.0Ah typical / 4.9Ah minimum |
| Weight | Approx. 80g |
| Internal resistance | ≤120mΩ |
| Charge cut-off voltage | 4.2V |
| Discharge cut-off voltage | 2.5V |
| Charge current | 0.5C standard / 1C maximum |
| Discharge current | 0.2C standard / 1C maximum continuous |
| Charge temperature | +10 to +45°C |
| Discharge temperature | −20 to +60°C |
| Short-circuit protection | Yes |
Build and options
Leads, connectors and labelling are confirmed against your equipment drawing before samples are made, and the pack is built to the specification above once it is confirmed. For shipping and compliance files, UN38.3, IEC 62133 and MSDS documents can be confirmed and provided for specific models — tell us the model you are buying and we will confirm which documents cover it.
Frequently Asked Questions
What cell is used in the 5.0Ah 21700 version?
This version is built on the Samsung INR21700 cell in a 21700 format.
What are the charge and discharge limits?
Charge at 0.5C standard and up to 1C maximum; discharge at 0.2C standard and up to 1C maximum continuous, with 4.2V charge and 2.5V discharge cut-offs.
Tell us about your battery project
Send your device requirements — voltage, capacity, current, space and quantity — and our engineering team will evaluate cell selection, configuration and battery management against them.