Batteries by voltage
3.8V Rechargeable Lithium Batteries
3.8V rechargeable lithium batteries require a charging circuit matched to the exact cell. For compact equipment, thickness, connector pinout and protection functions are essential selection details.
Product Categories · 3.8V
About 3.8V Cells & Batteries
3.8V identifies a nominal battery voltage, not a universal charge limit. It may be used for cells with a different upper charging voltage from conventional 3.7V designs. The selected model’s datasheet, rather than the nominal label, defines safe operating limits.
A 3.8V replacement must match the device’s charging profile, polarity and any temperature or identification contacts. The same connector housing or capacity does not establish electrical compatibility.
How to Compare 3.8V Cells & Batteries
| Selection criterion | What to compare |
|---|---|
| Charge limit | Obtain the exact upper voltage from the cell supplier; do not infer it from 3.8V. |
| Mechanical fit | Use the cell drawing, not capacity alone, to check thickness and clearance. |
| Device interface | Confirm connector pinout, thermistor and identification contacts. |
| Replacement validation | Review the original battery specification and device approval before substitution. |
3.8V Battery Project Requirements
Electrical
Provide the operating voltage window, required energy and continuous/peak current for your 3.8V project.
Mechanical
Provide cell-format constraints, terminal or tab details, assembly support and available dimensions.
Validation
Agree charging, load, temperature and equipment-integration checks for the selected design before ordering.
3.8V Battery FAQs
Can I replace a 3.8V battery with a 3.7V battery?
Not automatically. Compare the full charge/discharge window and the device charging circuit, as well as dimensions and protection.
Are all 3.8V batteries LiPo?
No. Voltage does not identify a single construction. Check the supplier’s chemistry and cell-format description.
Does this page confirm compatibility with a named phone or camera?
No. Brand and device replacement searches do not establish fit or approval. Provide the original battery label, device model and connector details for review.
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